Category Archives: Insects

Midsummer Hillside

15 Wednesday Jul 2020

Posted by in butterflies, Nature of Wales, North Wales, wildflowers

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Emerging from the shelter of the Woodland….

12:05 The steps lead up from the Woodland Trail and into an open sloping grassy space, whose character changes from year to year, largely according to the weather. The soil covering over limestone rock is very shallow and susceptible to erosion by the elements and by people walking over it; consequently it dries out rapidly when it’s as hot and dry as it was throughout this May. The grass is cut every year, sometime during the autumn or late winter and by now it would usually have grown quite tall again at the bottom end of the slope, but this year it is struggling to recover. A few days before I took this photograph, before the rain returned, it was completely brown and dry. There’s still time for it to pick up though, particularly if it keeps raining: plants that grow here are tough.

With no wildflowers there were of course no bees or butterflies or indeed anything much to tempt me to dither about here, so I carried on up the slope towards the trail that leads up to the summit. The view from higher up, looking westwards along the valley gives some indication of what a strange day this was. Low cloud hung as a heavy mist obscured the mountains from view and despite it being windy the warm air charged with moisture made it feel heavy and humid too. Traffic on the Expressway was still light compared to pre-lockdown days, but the sound of even a few vehicles can manifest as a roar at this height.

The nature of the vegetation on the exposed cliff-edge side of the Trail has evolved into an interesting area of what I think of as pre-woodland scrub, by which I mean it’s presently a mix of long meadow grasses becoming populated with patches of low-growing bramble, dog rose and young trees. I’m not sure if these trees are self-sown or were deliberately planted, perhaps a mix of both.

12:37 It was windy up here, which is by no means unusual, but there were butterflies and bees flying about, all keeping low and in the shelter of the vegetation. There were Ringlets, the first ones I’ve seen so far this year, some were chasing around not settling at all, but there was one that found a sunny spot on a low bramble leaf that it kept returning to. I couldn’t get a better angle for a photograph, but I was happy to get one at all.

Ringlet

Another first of the year sighting was a lovely Large Skipper that was much more obliging about posing.

Large Skipper
Ochlodes venatus

Amongst the grass summer wildflowers are beginning to show, not in great amounts, but I think that makes them a bit more special.

Lady’s Bedstraw-Galium verum-Briwydd felen
Field Scabious-Knautia arvensis-Clafrillys y maes

On a Dog-rose briar were several shiny new 7-spot ladybirds and a Rose Sawfly. Adults of this species are distinctively coloured black and gold and have smoky wings. Female sawflies lay eggs in soft young rose stems and the emerged larvae are sometimes considered to be ‘pests’ in gardens as they feed on the soft tissue of rose leaves, leaving just the leaf ribs. Happily they’re safe from human interference here, although doubtless there’ll be predators awaiting future larvae.

Rose Sawfly & 7-spot ladybird
Rose Sawfly-Arge Pagana

A Meadow Brown butterfly intent on feeding on bramble flowers stayed put for long enough for me to take some photographs; opening its wings each time another insect flew close to it.

Meadow Brown
Meadow Brown

13:09 Back on the path I disturbed a Grayling that had been basking on the warm bare earth. There are never very many here on the Bryn, and there have been years when I haven’t managed to catch sight of one at all, so I was happy to see it, but sad I’d missed it. Fortunately it didn’t go far and after a fly around it landed back almost in the same spot. These beautifully-marked butterflies are so well camouflaged you can easily lose sight of them until they move or flash their eyespots.

Grayling-Hipparchia Semele

Rather than following the bend in the trail that climbs up to the summit of the hill, I  carried on towards the far edge of the cliff, watching out for more Graylings.

There were no more to be seen today, but a Small Tortoiseshell sunning itself on a rock, more than compensated for the lack of them. It was very restless, opening and closing its wings and adjusting its angle, but it stayed until a large dragonfly flew close over the top of it, then it took off and left at speed.

Small Tortoiseshell

13:29 I turned around then and walked back to re-join the Summit Trail where it slopes down then up again, forming quite a deep U-shaped dip. I often look for reasons to spend a few minutes here as by the magic of its geology, it’s almost always sheltered from the wind and the only spot that I know of on the Bryn that somehow escapes the constant noise of the Expressway traffic. Today there was sound though, not traffic, but a constant and strangely muffled rumbling of thunder that was emanating from behind the distant cloud-covered mountains. Then to add to the already strange atmosphere of the day, the still air here held the briny scent of the sea; most peculiar! The grassy border on one side of the path here is one of the best spots I know to find numbers of lovely Pyramidal Orchids and they seem to be particularly abundant this year.  Traveller’s Joy, our wild clematis, seems always to be threatening to take over this ground, but thus far the orchids appear despite its encroachment.

Pyramidal Orchid-Anacamptis pyramidalis
Tegerian bera-Anacamptis pyramidalis

The opposite side of the track, fronting a Blackthorn thicket, has a slightly different character. Not so dominated by the clematis, here there is bramble, Rosebay Willowherb and a few Ragwort plants, which could be why I was got a rare glimpse of a striking red and black Cinnabar Moth. It may have been a newly-emerged one as it was clinging upside down to a blade of grass. There was another Ringlet here too, feeding on bramble and holding open its velvety chocolate-brown wings.

Cinnabar Moth
Ringlet

Goat’s-beard-Tragopogon pratensis-Barf yr afr Felen

Walking on up towards the summit over the remains of what were once part of the defensive walls of the old Hillfort, I was keeping an eye out for a glimpse of a Dusky Skipper butterfly; I’ve seen them here before in previous years, but there’s so little in flower here now I guess there’s nothing to tempt them.

What there was though were the big round seedheads of Goat’s-beard.

The summit, which as you see from a distance, is gently rounded and surprisingly grassy and well-vegetated. There is a huge raspberry-bramble patch, which is always slightly later to flower than those plants lower down the hill, which was attracting the attentions of a Red Admiral and another Small Tortoiseshell butterfly.

13:46 I walked towards the summit edge to look at the view and passed more bramble, which had a big orange and black fly feeding on its blossom; a distinctive orange and black, very bristly tachinid fly – Tachina fera.

Small Tortoiseshell
Tachina fera

Heavy cloud completely misted out the view across Colwyn Bay. We get at least two types of mist here; there’s downwards mist that falls from heavy cloud moving over the mountains, then there’s upwards sea-mist drawn up from the surface of the water by warm air. I think it’s likely that today’s was a blend of both.

 

The trail carries on around the trig point and opens out again onto the other side of the hill. The view from here was fascinating, a thick band of low cloud obscured the Little Orme, moving across the headland and snaking wraith-like out over the sea.

14:40: On this side of the hill the steeply sloping open grassland is more exposed and open to the elements, mainly from the North and East. It was very windy and although it appeared that we were surrounded on all sides by misty cloud it was actually a very warm, almost hot afternoon. Days like this can sometimes be good for finding insects as in the wind they tend to be less mobile and stay closer to the ground. It helps that they still need to eat too; I spotted a female Swollen-thighed Beetle on a Rockrose flower and a lovely shiny green Forester Moth on Cat’s-ear.

Swollen-thighed Beetle-female
Cistus Forester

Tucked down into the shelter of the grass were a Small Heath butterfly and another day-flying moth, this one a Six-spot Burnet.

Small Heath
6-Spot Burnet

This more open grassy part of the Bryn is also good for orchids, this time the pretty pink Common Spotted species. As with most orchid species, numbers of plants fluctuate from year to year, which can be for a number of reasons, but I wonder if there are less now as the character of the habitat is changing. A few years ago this slope was predominantly short grassland, but is quite quickly developing into more ‘pre-woodland’ grassy scrub with bramble, gorse and trees being left to grow. I had to hunt to find some today, then came upon this perfectly beautiful little group of them set amongst Cowslips going to seed.

Common Spotted Orchid-Dactylorhiza fuchsii
Tegeirian Brych-Dactylorhiza fuchsii

I was hoping to see at least one Dark Green Fritillary butterfly here today and finally got my wish as I stood up from my orchid photographs. Their size, colour and speed of flight are pretty distinctive, so I recognised the one that galloped past in front of me, but it quickly disappeared into the middle of the scrub. I found a narrow track through which I followed in the hope of finding more of them within its shelter, passing by a bramble where a Painted Lady butterfly sat feeding and disturbing a Silver-Y Moth, both of which are migrants, so could have been recent arrivals.

14:20 I sat for a while in a clear spot amongst the scrub and did see more Dark Green Fritillaries, but they were very mobile and of course chose the most inaccessible parts of the vegetation to fly over. But at least I know they are out and about now, so can come back to find them another day. At the bottom of the slope there were more brambles and more insects. Butterflies: another Large Skipper, a Red Admiral and a Speckled Wood to add to my day’s list.

Large Skipper
Red Admiral

Below is a selection of other insects I photographed there:

Hoverfly -Scaeva pyrastri
Hoverfly-Eristalis pertinax
Hoverfly-Sun-fly-Helophilus pendulus
Tree bumblebee
Swollen-thighed beetle (female)
7-spot Ladybird

15:36 The weather may have been a bit strange, but I headed back home feeling more than happy with the diversity of the wildlife I’d seen during the course of a few hours; then not far along on the path back through the woodlands, lying stretched out and motionless was a perfect Slow Worm. Looking more closely I could see it was lying belly-up and although it looked to be unharmed, I thought the poor thing was dead as it was making no attempt to move.

I couldn’t, and still can’t imagine how it had ended up in that position, but it was shady there and I wondered if it had got too cold to right itself. I picked up a stick lying nearby and gently rolled it till it was right-side up and to my relief after a few seconds it moved off into the vegetation at the side of the path. Thank goodness I reached it before a curious dog found it….

 

 

Midsummer Woods

05 Sunday Jul 2020

Posted by in birds of Wales, Butterflies of Wales, Insects, Local Nature Reserves, Nature of Wales, nature of woodlands, Walking, Wildflowers of Wales, woodland

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It had been a good while since I’d spent the best part of a day meandering around the whole rich patchwork of varying habitats that make up my local nature reserve of Bryn Euryn, so a sunny morning that was forecast to stay that way into the afternoon offered the perfect opportunity to spend a day outdoors.

09:59 – Woodland Path

Once outside I realised it wasn’t quite as warm as I’d thought it was going to be, but the air felt fresh, if slightly humid. The copious rainfalls of previous days have done wonders; plants that had looked sad and wilted a few days ago were perked upright and the leaves of the trees washed of dust and good as new. A Speckled Wood butterfly on ivy and the chirpy calls of foraging Blue Tits greeted me at the beginning of the path, which has also benefitted from the dust-settling cleansing rain.

The specialist woodland wildflowers of the early Spring have long-since finished flowering now and are directing their energies into producing seeds. There are a few later-flowering plants that can cope with the reduced sunlight though, including the beautiful Honeysuckle, one of my lifetime favourite plants whose fresh perfume I would happily fill my home with, if only someone could capture it perfectly.

An arch of Honeysuckle

It’s been a good year for this  fragrant twining-climbing plant which has given me cause to make even more frequent stops on my walks; the scent of it in the air, particularly in the cooler mornings and evenings is as much a highlight as anything I might see or hear. It has maybe passed its peak of flowering now, but there’ll be occasional blooms to enjoy for a while to come.

Also happy in partial shade and flowering now are Navelwort, which is usually more easily recognised by its distinctive round fleshy leaves and Wood Sage, which despite its name is not confined to woodland paths; it’s a tough plant that is equally as happy growing out on exposed heaths and coastal cliffs.

Wood Sage-Teucrium scorodonia
Navelwort-Umbilicus rupestris

10:12 Covered with white blossoms and well-refreshed the bramble patch at the top of the first rise of the path, was my first stop this morning. Gradually being lit and warmed by sunshine, it was already busy with a variety of insects.

Honeybee on bramble blossom

A Blackbird was singing from a tree somewhere close by, his melodic, relaxed song lending an element of calm to the scene of frenetic insect activity. There were bumblebees: Tree Bumbles  definitely the most numerous, some looking fresh, their heads and thoraxes bright deep tawny brown others faded to a pale blonde, perhaps bleached out by the sun. A few smaller Buff-tailed workers are busy between them and there are a small number of Honeybees, some of the first I’ve seen this year.

Faded Tree Bumblebee
Fresh Tree Bumblebee

Butterflies joined the party, two Speckled Woods, which must have been a male and a female as they behaved amicably together, feeding almost side by side until disappearing together to the privacy of the leaves of an overhanging Sycamore. A Large White scooted over but didn’t stop, but a Red Admiral, missing a piece from a hind wing stayed for the whole length of time I was there, only moving short distances between flowers.

Speckled Wood
Red Admiral

Most interesting of all were the big yellow-and-black beetles, that for some reason don’t seem to have a standardised common name, so are  known to me as Strangalia maculata, (which is apparently no longer correct as they’ve changed it to Rutpela maculata!). In the midst of the tangle of bramble, honeysuckle and ivy stands the remains of a tree, which was snapped in a storm a few winters ago. I wonder if it’s within its damaged fabric that they spent their larval stage and from which they have emerged. For a while now I’ve seen them here each time I’ve passed by, several at a time. Until now all of my past and more recent sightings of these lovely beetles have been of them calmly feeding on flowers, so it was interesting to see them very active this morning, flying rather clumsily from flower to flower, not lingering for long on any.

Yellow and black beetle- Rutpela maculata
Yellow and black beetle-Rutpela maculata

The distant mewling of a Buzzard calling from above diverted my attention and I caught glimpses of it as it circled high above the trees.

This was the first one I’d seen in a while, so I wondered if it might appear back over the field, perhaps with its family, so moved on in that direction. It was a sun-in-and-out morning, surprisingly cool on the shady path when the breeze picked up.

Path edged with False Brome

Paths are edged with grasses, which are flowering now. False Brome predominates, covering large swathes of the woodland floor in places throughout this site, and there are lesser amounts of other species such as the distinctive Cock’s-foot.

Cock’s-foot-Dactylis glomerata
False Brome-Brachypodium sylvaticum

 

10:40 There was nothing to see at this edge of the woodland except the wind rippling over the long grass of the meadow, and it was too cool to linger.

The sun came out again as I walked between the pine trees. This has become one of my favourite parts of the woods. I love the characterful Scots Pine trees with their tall, straight trunks crowned on high with heavy, strangely twisted branches in all seasons; but today with their rust-red bark still slightly damp and darkened by rain and highlighted by filtered sunlight they had a special glow.

There were no birds to be seen and for a while no sound of them either, until their silence was briefly broken once again by the Buzzard and the familiar contact calls of more Blue Tits working their way through the trees.

PATH EDGES

Nipplewort-lapsana-communis

Opportunistic wildflowers crop up randomly along the path edges, mostly of those species that seem to travel alongside the blackberry brambles, accompanying them wherever they go. In flower now are nettles, dock and delicate-looking Nipplewort.

All have value to insects in their way, either as sources of pollen and nectar or via their leaves which are either eaten from the outside or mined and eaten from the inside.

Curled Dock
Common Nettle

10:47 – My next stop is at the brambly-scrubby patch at the junction of three woodland paths. In recent weeks this has been buzzing with a variety of bees, in particular Tree Bumblebees that clearly have a nest nearby, or there may even be two. There have been a lot of Early Bumblebees too, but lesser numbers of other common species and so far I’ve only seen one or two Red-tailed bumblebee queens; no workers.

Predominately a raspberry bramble patch, which flowers earlier than blackberry, there is less blossom here now so is less of a draw for foraging insects now. There were a few Tree bumblebees about though, some working, one or two taking short rests on nearby sun-warmed leaves; poor things have probably already been out working for hours. This has been a great spot for hoverflies this Spring too, where I’ve  added a few ‘new’ species to my list. It was starting to get warmer, which doesn’t seem to bother bees, but hoverflies often seek shade under leaves, so I wasn’t too surprised there were few to see. Then I spotted one of the largest of our UK hoverflies, a Great Pied Hoverfly (Volucella pellucens) on some more shaded brambles. Not a new species for me, but I’d not seen one in this spot before. In contrast there were also a few of one of our smallest and commonest hoverflies about, little Marmalade Flies (Episyrphus balteatus).

Gt Pied Hoverfly-Volucella pellucens
Marmalade Fly-Episyrphus bateatus

10:46 A bird landed in an Oak tree a few metres behind the Sycamore tree, on first impressions quite big,heavy-ish landing so probably a Wood Pigeon. I almost didn’t take any more notice, but then it came to mind that this is a good spot to see Jays, which I am always keen to try to photograph as they are quite elusive, so I focussed on it and was excited to see it was neither Wood Pigeon nor Jay, but a dark handsome Buzzard. What a beautiful bird, and posing so nicely too.

The Woodland Trail

11:10 As I walked on, I remember thinking that the sighting of the Buzzard and managing to get a half-decent photograph of it was going to be the main highlight of my day. But then you just can’t predict what you may or may not see on any given day in this treasure trove of nature, as I later discovered.

Reaching the Woodland Trail, I crossed it to sit on the bench for a few minutes to enjoy the sunshine and to listen to what was around me whilst I wrote some notes. I’m always fully aware of the soundtrack of my walks, but unless I get lucky and can photograph or record a singing bird can’t always properly recall what I heard. This is what I wrote here ” … for 30 seconds, maybe a little longer there are no extraneous sounds; no noise from the road, no dogs barking, no human voices, only the sounds of twittering birds – most likely Blue Tits reassure me I haven’t gone suddenly deaf! A Robin’s just flown into the tree above me. It sits and looks at me for a few seconds before flying into the woods I’ve just left. I see a Small Heath butterfly; it lands but I didn’t spot it in time and it flew off, surprisingly rapidly for such a tiny butterfly, ditto a Meadow Brown!”

As I got up to carry on I caught sight of a small gingery-furry bee flying over a fallen tree branch, which I thought might have been a Tawny Mining bee. I tried to focus in on it, but it was flying and although I pressed the shutter a couple of times I knew the bee wouldn’t be in focus, but may do as record shots. I can’t even begin to describe my feelings when I looked at those photographs on my computer later that evening. Expecting to see an out of focus bee, there too was also an almost perfectly in-focus lizard lying motionless and perfectly camouflaged along the length of the fallen branch which the bee was flying over. It had probably been watching me and wondering whether it should stay still or risk making a move. I’m grateful it chose the latter option.

Part of me was glad I hadn’t noticed the lizard, which is a Common or Viviperous Lizard, as I’m sure I’d have been so excited to see one in a position where I might get a photograph that I’d have fumbled with the camera and likely have missed it. But then I think it would have been nice to get a proper look at one rather than just a glimpse of a disappearing one, which is all I’ve managed so far in my years of tramping this hill! Mainly I’m just more than happy to know it was there and I have a photograph, however I managed it!

Being oblivious at this point to my lizard ‘capture’, and back in insect-seeking mode, I wandered along to the huge bramble tangle that once in flower has always been a brilliant place to spot a good variety of insects in a relatively short space of time with minimal effort. Years ago, this was the first place on the reserve that I recognised as an insect ‘hotspot’. There was a fair amount of activity here this morning, mostly from bumblebees, but there was also another Gt Pied Hoverfly, a Red Admiral butterfly, a Strangalia maculata beetle that only showed me its antennae and legs and a few different species of flies. Getting photographs was tricky, insects were constantly moving, the sun was shiningly brightly, but probably more to the point the path was getting busy with people and dogs and I got fed up having to keep moving to let them pass at a ‘safe distance’.

Volucella pellucens
Tiny Tree bumblebee
Early bumblebee

Tutsan growing alongside the bramble already has ripening berries. Its flowers hadn’t the same degree of appeal to insects as bramble, but I did catch a little Marmalade Fly visiting it.

The woodland is at the peak of perfection now, leaves are fully grown, in a myriad of shapes and uncountable shades of fresh green; climbers and ramblers are not yet over-reaching themselves to become sprawling and untidy and the plants along the path edges are not yet spilling over it.

 

Speckled Wood butterflies were stationed every few metres along the path, whether basking on the ground or perched on leaves overhanging the path. Constantly on alert, they readily explode into action to see off any intruders into their territory.

 

Trees arch across the path creating shady leafy tunnels

First wild raspberry

Generally birds are much quieter these days, apart from the Blackbird I heard earlier the only ones still singing to any extent are our summer breeders-Chiffchaff and Blackcap.

The closed canopy makes it too shady for there to be much in the way of ground-level plants for a while, so there are few distractions, other than Speckled Wood butterflies of course and the occasional sight of a Blackbird foraging in the safety of the dappled shade.

No matter how often I walk along this Trail, several times a week sometimes, each time I see it with fresh eyes. Looking up there are places where trees on opposite sides seem to avoid contact, leaving fascinating space between their contrasting leaves.

The same scenery changes according to the lighting effects; the varying cloud cover and the angle of the sun at different times of the day as the seasons progress all contribute, as do the weather conditions, particularly on days when there’s wind and how strong it is. On the ground, complex shadow patterns may be cast on the uneven canvas of the bare-earth path.

12:05: The steps up from the shady sheltered Woodland Trail lead into what could be an entirely different dimension….

a good place to take a break..

Tiny Tree-top Dancers

03 Sunday May 2020

Posted by in day-flying moths, Insects, Nature of Wales

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Every year, from around about the end of the third week of April, I begin to watch out for the arrival and mass gatherings of insects I find particularly enchanting; the strangely beautiful day-flying Green Longhorn Moth. Their arrival and group dancing displays have become one of the highlights of the Spring for me, not just because they are entertaining to watch, which they are, but equally as this is an event that occurs at this same point in time each year. In changing times it’s reassuring to see that some elements of Nature’s complex pattern continue to repeat as and when they should, although each passing year I breathe a quiet sigh of relief when I see them for the first time, then feel the joy.

Green Longhorn Moths around an Oak tree

Seen individually and more closely, you could be forgiven for thinking this is some kind of a fly rather than a moth. Tiny insects; from outstretched wingtip to wingtip they might stretch to about 1½” (14-18mm).They have long black shaggy-looking hairs on their head and thorax, giving them a furry appearance and well-developed eyes. But then they brandish a pair of outlandishly and seemingly disproportionately long, white waving antennae, with those of males being longer than the females. Their beauty though is in their gorgeous iridescent wings. The basic wing colour is usually described as metallic green, hence the moth’s common name, but depending how the light catches them they can appear in a range of shades from bronze, through greens to violet.

There are several spots around Bryn Euryn where I have seen gatherings of the moths most years, that you could say are reliable. One is around Oak trees, which the insects are known to be associated with, and another is over an area at the edge of a Trail which is lined with more scrubby vegetation including blackthorn and gorse. Most noticeable in large groups dancing around the outer leaves of trees, sometimes high up, sometimes lower down, I have also found them in smaller groups in spots on woodland paths and even occasionally alone.

Ready for take off

My own best views though take little effort on my part, as the moths gather and perform in sometimes large numbers directly in front of my kitchen window, dancing in the sunshine around the top of the Wych Elm. I took the following video, which I think gives a much better idea of how the insects look and behave in action than photographs can. My videoing is not the best, but I think anyone that has never seen this little spectacle before will get the general idea! The dancing moths are accompanied by a Blackbird singing, with a few notes thrown in by a passing Herring Gull, plus a few creaks and squeaks from my zooming camera lens which is a tad bent out of shape since I dropped it….! You may also spot the odd hoverfly and a Speckled Wood butterfly.

(you can click on the video to make it bigger to get a better view)

Timeline 2020: This year I spotted my first arrivals in one small group on April 23rd. I think it’s safe to say, all males. Numbers increased over the next few days and I’m sure there have been more than in previous years, but they’d be very difficult to count! Numbers have fluctuated over the last few days, perhaps in connection with the cooler rainy weather we had earlier this week, and yesterday, May 2nd there are only a very few to be seen, in scattered small groups. But this morning they were back in force, with a lot of activity, then by 11am I couldn’t see any at all. I wondered if like with many small insects they need to stay out of the hotter direct sunlight.

Despite some careful watching, I don’t think I saw any females, for whom all of this frenzied displaying is for of course.  I definitely didn’t see any mating happening, but I’m hopeful it will have and that there will be more performances to look forward to this time next year.

 

 

 

 

Hot on a Hillside Trail

13 Friday Jul 2018

Posted by in Bryn Euryn Nature Reserve, butterflies, Local Nature Reserves, North Wales, Walking Trails, woodland walks

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July 7th – BRYN EURYN

Another hot sunny day. Not my idea of perfect walking weather, but I  wanted to see how the hill, or rather its wildlife was holding up under the scorching weather, in particular hoping there would be butterflies.

It was pleasantly cooler inside the woods, but the ground was bone dry, hard and at this lower end of the path scattered with shed Laurel leaves, often a sign the plants are short of water.

I stopped at the small scrubby patch, often an insect hot-spot. Hot it was, but not with aerial activity. The nettles have flowered and are beginning to set seed and I noticed many of their leaves have been ravaged by insects. That set me thinking about the battles going on all around me between plants and their attackers and some of the other roles that leaves play.

An insect-eaten nettle leaf with stinging hairs left in place

I like to see eaten leaves as it’s a sure sign there are insects about, but of course plants need their leaves to supply them with food, so many do what they can to preserve them. Nettles have particularly aggressive defences;  as those having had  painful encounters with them will testify. They’re not aimed at us specifically of course, rather at grazing animals. They have stinging hairs, every one tipped with a tiny glassy needle that breaks off at the slightest touch that is sharp enough to cut skin; simultaneously poison is squirted into the wound from a small chamber at the base of each hair. Ouch! Even nibbling rabbits avoid them as they have sensitive noses and find the sting as unpleasant as we do. Despite this, nettles are the favoured food of such insects as the caterpillars of the Small Tortoiseshell and Red Admiral butterflies: they simply chomp through the safe juicy parts of the leaf, going around the dangerous stings, leaving them neatly in place.

Nearby a more pacific Wild Privet shrub is blossoming. Harmless in itself, but spiders have built webs over their fragrant blossoms in hope of capturing unsuspecting nectar-seeking insects.

Sycamore leaves are already freckled with Tarspot-Rhytisma acerinum. Although it occurs on other trees too, including Willow and Eucalyptus, it is generally referred to as Sycamore Tarspot and by this time of the year it’s practically impossible to find a Sycamore tree without it. This common and widespread fungus doesn’t look pretty, but doesn’t seem to adversely affect the trees it afflicts. Looking at Tarspot I then noticed a leaf that was curled at an edge. I have no idea what had accomplished this neatly rolled cylinder, clearly some species of insect at some stage of its life, but it impressed me greatly.

The structure is tightly rolled, like a small cigar, secured along the long edge and open at both ends. There are ‘blisters’ on the leaf too, so I wondered if there may be a connection?

Leaves make perfect landing and resting pads for butterflies too. This bramble leaf had served as such for a Green-veined White butterfly that took off just as I’d focussed on it! You can just see it rocketing out of the top of the photograph.

A Speckled Wood was more obliging, pausing on an ivy leaf at ground level.

Another spider’s web, this time utilising an Ash leaf.

WOODLAND TRAIL

Close to the junction of my Woodland Path with the Reserve’s Woodland Trail there are a few plants of Hogweed flowering. It was devoid of much insect interest at this time – occupied by just one feasting Eristalis sp. hoverfly. (I’m fairly sure it was Eristalis pertinax, but its diagnostic yellow tarsi were sunk into the flower petals.)

Hogweed has impressively large and interestingly-shaped leaves; this one was showing signs of having been nibbled and there are aphids dotted around on its surface. These plants often play host to great colonies of aphids that pierce the veins of its stems and leaves to feast on its sap. The aphids then attract insects that eat them, such as ladybirds.

Away from the peaceful confines of the shady wood and out onto the wider more open track I was soon distracted by insect activity. There’s not much about at the moment in the way of wildflowers, so what there is is in high demand. Wood Sage is both still flowering and beginning to set seed. The remaining little flowers of the plants close by were being visited by busy little Carder bees.

Common Carder Bee-Bombus pascuorum
Wood Sage

There are a whole host of different bramble species, which is possibly what accounts for them flowering and fruiting at slightly different times; a mercy at this time of year for insects seeking nectar and pollen.

Many bramble bushes are down to their last few flowers and are busy setting fruits. They may not come to much if we don’t get rain to swell them soon.

The enormous bramble here at the side of the track was positively frantic with insects this early afternoon. Hot sunny weather makes capturing images of insects tricky, they zoom around at high speed and bright sunlight reflects off shiny wings, bodies and white flowers. I saw more species here than I could catch, including a Red Admiral, Meadow Brown and Gatekeeper butterflies, Tree and Buff-tailed Bumblebees, Carder Bees and a few hoverflies. I managed to get a snap of a Honeybee, looking rather worn,

Honeybee
Honeybee with torn wings

and an always-impressive Great Pied Hoverfly – Volucella pellucens

Volucella pellucens
Volucella pellucens

I would happily have stayed here for longer, but out in the open it was way too hot to stand in the blazing sun! Moving on along the trail there were very few flowers, some of the last are of Tutsan, but that too is also developing berries.

It’s unusual to see a Meadow Brown butterfly out in the open resting up on a leaf, especially opening up its wings to reveal its upper wings, but I think this one had not long emerged as it was still slightly crumpled. It may well have been a female as males tend to be a darker brown and may not have the orange patch.

It was quite a relief to get back into the shade.

 

Another new, still-crumpled butterfly caught my eye; this one a Large White.

 

 

 

 

 

MEADOW

With no hint of a breeze to stir the air it felt even hotter out in the open meadow. The thin soil was baked hard, the grass browned to a crisp. There are some green stems amongst it; there’s some Knapweed, its few flower buds small and tightly clenched closed.

Goat’s Beard has kept some leaves, and green stems support its lovely big globular seedheads, or clocks. There are tiny yellow dots of a hawkweed/hawkbit in there too.

Goats-beard – Tragopogon pratensis

A lovely big patch of Lady’s Bedstraw grows under a network of collapsed grass stems. It too has retained surprisingly green stems and leaves.

More Meadow Browns were doing what Meadow Browns do – that is flitting about amongst the long grass stems and landing in line with a grass stem that renders them barely visible.

Two very small dark ones were feeding on a single plant of flowering Ragwort.

LOWER HILLSIDE/WOODLAND EDGE 

Too hot to consider hiking over the summit of the hill and down again to make a proper circuit, I got to the bottom of the hill by cutting back into the woods to reach the bottom of the Summit Trail. It was baking hot here too and although this is the cooler North side of the Bryn, it too is largely brown and very dry. I was surprised to spot a bird out here, hopping around in the grass and not too bothered by me watching it. I only saw it from the back, but could tell it was a young Mistle Thrush.

Greenery here is that of brambles, young trees, some grass and another stand of Rosebay Willowherb.

Knapweed is faring better here than in the small meadow and the first of its flowers are opening. Open flowers are sparse though and in high demand. Where 6-spot Burnet Moths lay claim to a flowerhead they settle in for a  good long time and are reluctant to share.

I was here hoping to see a Dark Green Fritillary, but on first sight of the dryness and lack of flowers, didn’t have much hope. Then lo and behold I suddenly spotted a large fast-flying butterfly head for the very Knapweed occupied by a Burnet Moth. It tried to land but the moth denied it access and it shot off again. Fortunately it spotted an unoccupied flower nearby and settled, though only briefly before setting off again.

Dark Green Fritillary – Argynnis aglaja

This part of the hillside, covered with long grass, brambles, gorse and pitted with rabbit holes is definitely off-limits for walking through, so no chasing butterflies! Best to stick to the few narrow tracks and hope something may cross your path. I did get a couple more glimpses of this gorgeous insect, but no more photo opportunities. I’m happy they are there and hope that there is more than one.

Last evening’s weather forecast promised sea mist over the Irish Sea and so it has come to pass. The whole landscape, including the Little Orme was veiled by it. It didn’t seem to being having much effect on the land temperature though.

Large Skipper-Ochlodes venatus

Peering around for the fritillary I did spot some Skipper butterflies. Several Small Skippers living up to their name, skipping  through the grass and a single male Large Skipper that kindly settled momentarily to pose on a grass seedhead.

And more luck as a Ringlet settled on a bramble flower. It didn’t settle for long either as it was dive-bombed by Bumblebees.

Ringlet – Aphantopus hyperantus

Time to get out of the sun. A passing glance at a Hazel tree on the woodland edge revealed a little bunch of ripening nuts, surprisingly not eaten yet by squirrels, and then a lovely fresh-looking Gatekeeper.

Gatekeeper (male)

Back into the meadow on a different track I spotted the silken tent of a Nursery Web Spider, but no sign of its weaver.

Then a tiny flutter of a butterfly; a Brown Argus.

WOODLAND PATH

On my short-cut track back home, the sound of loud screeching drew my attention to a family of Jays up in the treetops; three together. One flew off, so I think it may have been two young ones demanding attention from a parent. One of those left in the tree wasn’t too happy though, you can see it has its crest raised.

Such pretty birds and a good note, albeit a loud one, to end a walk on.

 

 

On a Perfect Spring Day

03 Thursday May 2018

Posted by in birds singing, British hoverflies, Bryn Euryn Nature Reserve, Butterflies of Wales, Local Nature Reserves, Nature of Wales, North Wales, Wildflowers of Wales, woodland birds, woodland walks, woodland wildflowers

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April 19th – Bryn Euryn

Today was the middle day of the three consecutively warm sunny days that tantalised us with the notion that Spring had truly arrived, and judging by the activity here today it had a lot of our wildlife fooled too. The sky was clear and that almost-unbelievable shade of deep blue, the birds were singing and best of all, it was warm!

WOODLAND PATH

A few metres along the Woodland Path of my patch is an untidy-looking stretch, divided by the narrow path, where missing trees have opened up the canopy, letting in the light and warmth of the sun. Somewhat mysteriously, it holds great allure for diverse species of insects, some of which at certain times can be found here in surprising numbers. At the right time on the right day, ten minutes spent in this  ‘hotspot’ can be as productive as two hours spent ranging over the rest of the site.

11:44 Today I was here at the right time to see a surprising amount of insects. Most prolific were hoverflies in all shapes and sizes from big and bulky to teeny-tiny and dainty.

Eristalis sp hoverfly

Syrphus sp.

There were few flowers here for nectaring upon, so that wasn’t the attraction for the majority of the hoverflies; I caught just one on the tiny flowers of Dog’s mercury. There were dozens of this small black and yellow striped species here, all very fresh and shiny and mostly basking on the sun-warmed leaves of brambles and nettles.

One side of the ‘hotspot’ is open to sunlight, clear of trees but sheltered by those standing behind it and by large shrubs of laurel and holly on either side. A large tangle of bramble fills the gap in the vegetation and is the only barrier between you and the Expressway below at the bottom of an almost-vertical slope. (Only joking, there’d be plenty of trees to stop you if you fell!) On the other side is a large patch of nettles, the aforementioned Dog’s mercury, more bramble and a pretty patch of periwinkle, all growing through a ground-covering of ivy.

Periwinkle
Dog’s Mercury

A lone Tree bumblebee flew in, visited a couple of the periwinkle flowers then stopped to bask on a last-year’s half-eaten bramble leaf. I think it was a male (no pollen baskets) and was looking a bit the worse for wear. He seemed to have a burden of mites and I wondered if exposing them to warm sun might dislodge them. I’ve seen birds do that.

A smaller bee caught my eye as it came to rest on an ivy leaf. I didn’t realise what it was until I saw my photograph, then was excited to see it was a Hairy-footed Flower Bee, this one a male and my first record of this species here.

Hairy-footed Flower Bee – Anthophora plumipes (male)

Hairy-footed Flower Bee (m)-Anthophora plumipes

A species common and widespread in much of England and Wales, especially in towns, cities and villages. Often nests in the soft mortar and exposed cob of old walls, but occasionally will nest in the ground, preferring bare compacted clay soils. Flies from late February to mid-June, and is particularly partial to Lungwort (Pulmonaria) flowers.

Males and females look very different from one another: the female resembles a small, black bumblebee with orange-red hairs on the hind leg and a rapid-darting flight; she’ll  often approach a flower with her long tongue extended. Males are mostly brown with a dark tail (fresh specimens are gingery). Cream markings on face distinguish it from all bumblebees.They are often among the first bees of the year to emerge and often hover in front of flowers and when pursuing females.

Another little bee came to rest on a nettle leaf, this one I recognised as an Ashy mining bee and another male.

Ashy mining bee – Andrena cineraria (male)

Ashy mining bee (m)-Andrena cineraria 

A distinctive and obvious spring-flying solitary bee. Females are black, and have two broad ashy-grey hairbands across the thorax. Males emerge well before the females. They look similar, but their thorax is entirely covered with less dense grey hairs, and there’s a pronounced tuft of white hairs on the lower face. Species has a single flight period each year from early April until early June. Nests are constructed in the ground; entrances are surrounded by a volcano-like mound of excavated spoil; often in dense aggregations in  lawns, flower beds, mown banks and in field margins.

And where there are mining bees there are those who would prey upon them….. Bee-flies: quirkily-cute in appearance but not good to know if you’re a hard-working mining bee; they’ll spy out your nest-hole and craftily kick their eggs inside with those long legs, then later their hatched larvae will feast on yours.

Bee-fly-Bombilius major

Wasps were out on the prowl too; I didn’t get a clear enough image to tell if this was a German or Common Wasp – the latter have a distinctive anchor mark on their face; this image is a bit fuzzy.

12:07 I could have lingered longer, but birds were singing, I’d been serenaded by a Song thrush and a Robin as I stood watching insects, Blue tits twittered on all sides and I was keen to see what else was happening.

Bluebells are beginning to flower and offer nectar to those that can reach it, there’s also Greater Stitchwort and lots of Dog Violets. A male Orange-tip butterfly raced past me over the bluebells and through the trees, clearly on the trail of a female and not stopping for an instant.

Greater Stitchwort – Stellaria holostea

There are masses of glorious glossy golden yellow lesser celandines shining in the sunlight too.

I stopped to admire the celandines lining a section of the path and not at all concerned by my presence, a Blue tit perched above me and began to sing.

Beneath him dozens of shiny new flies arrived to bask on soft sun-warmed new bramble leaves.

There’s one special spot I know where Wood Anemones light up the woodland floor like fallen stars, turning their faces to the sun

and another where those of the shamrock-leaved Wood sorrel shyly hide theirs.

Over the boundary fence, the formidable thorny boundary hedge of gorse and blackthorn is softened now with their fragrant gold and white blossoms.

I heard a bird singing, a short loud burst of notes that I thought at first was a Wren, but it wasn’t quite right. I’d forgotten that another tiny bird, the Goldcrest also has a disproportionately loud song, remembering when he broke cover and flitted about in shrubbery in front of me. He wasn’t going to oblige me with a photograph, much too busy! So I stood gazing upwards for a while – you can’t get too much beautiful blue sky…

… or pretty blossom, can you?

WOODLAND TRAIL

12:58 There’s another hotspot around the junction of my Woodland Path with the reserve’s Woodland Trail, this one for birds. Here there is a territory of both Blackcap and Chiffchaff so there is the possibility of hearing if not seeing both species here. Today I was lucky; I heard the Blackcap’s song as I approached and walking slowly and as quietly as I was able I spotted him. He continued to sing but moved restlessly through the branches as I got nearer then flew off across the other side of the track.

While he sang from behind foliage over there I watched a pretty female Tawny mining bee feast on Blackthorn blossom.

Then the Blackcap came back to where he’d started, so I think perhaps his red-headed mate may be on their nest somewhere close by.

This gorgeous gorse is below his singing tree. It would make a safe place to nest and the flowers would attract insects for dinner.

I had heard a Chiffchaff singing nearby too but was pleasantly surprised when he appeared, continuing his song while flitting about amongst the twiggy branches searching for insects.

13:21 Further along the trail I spotted a flutter of orange – a lovely fresh Comma butterfly  basking on dry leaves at the edge of the path. As I watched it moved, (look away now if you’re squeamish) onto a thankfully dryish dog poo deposit. I had to take the picture as it nicely presented its underside showing off the distinctive white mark for which it is named.

The disturbed ground of the pathsides supports some of the ‘weedier’ wildflowers like dandelions which provide important nectar when there’s not much else in flower.

You’d be very unlucky not to hear and see a Robin singing along here, there seems to be one at regularly spaced intervals. They sit and watch out over the track then dart out to pounce on any potential prey they may spot. This one had been singing but stopped to watch me.

I waited to see if he’d start singing again and was distracted by a bird whistling loudly. I scanned around searching for whatever was making the sound, one I didn’t recognise at all but that sounded to be being made by quite a large bird. After a few minutes the whistler appeared and to my amusement turned out to be …. a Great Tit! Of course it was, one of the basics of birdsong recognition is ‘when you don’t recognise it or haven’t heard it before, chances are it’ll be a Great Tit’; they have an incredible repertoire of sounds to call upon. I was thankful to him for keeping me in that spot though, as this gorgeous Greater Spotted Woodpecker flew onto a tree trunk literally right in front of me.

The Woodpecker stayed there, keeping a watchful eye on me. This bird is a female and is holding something small in her beak, so I imagine she has a nest nearby and was unwilling to reveal it. I moved away quickly, thanking her for the photo opportunity as I did.

Great Spotted Woodpeckers are about the same size as Starlings. Their plumage denotes their age and sex. Juvenile birds have red foreheads that are replaced by black as they moult in the autumn. Adult males then have a red nape while females have no red on their head at all.

 

The Lesser Celandines have been late flowering this Spring but are glorious now and more prolific than I’ve seen them before. It’s not just the flowers that are prolific, so too were hoverflies and Bee-flies seemed to be everywhere.

Approaching the entrance to the meadow another Robin, which looks as though it is singing, but was actually ‘ticking me off’, let me know it didn’t appreciate my disturbing it.

THE UPPER MEADOW (ADDER’S FIELD)

The grass of the meadow was cut back hard last autumn and so far there’s not much happening there yet, but the grass is beginning to grow and the cowslips are starting to come out. They’ll be later on the more exposed ‘downland’ side of the hill.

Another Bee-fly settled on an exposed rock in the pathway, fluttering its wings rapidly and making flicking movements with its legs as they do when depositing their eggs, but there was no sign of a mining bee nest anywhere near, so not sure what it was doing.

Summer Rainfall Prediction:

If oak is out before the ash, there’ll be a splash ; if ash is out before the oak there’ll be a soak…

Keep the brollies handy, looks like ash is furthest on so far….!

Wriggling across the still-damp ground on the way to the Summit Trail was an earthworm. Double jeopardy came to mind – exposure to warm sunshine and hungry birds; foolish worm.

Last year I noticed spots along the trail here where Mining Bees were making nests. having seen a few about today I kept an eye out for more signs of their activity and spotted these little ‘volcanoes’, evidence of their presence. I waited a while but no bees showed, so I don’t know which species had made them, but I think maybe Tawny Mining Bees.

THE SUMMIT

It was cooler and breezier up here. I walked carefully, hoping there may be Small Tortoiseshell butterflies basking on the bare earth of the path, but not today, although I did see two busily chasing one another at speed as they disappeared over the edge of the cliff.

The mountains and the distant Conwy valley were veiled by a misty haze.

The blackthorn is smothered with blossom and looking beautiful. It will be interesting to see how much of it gets pollinated and develops as fruit this autumn. Sloe gin comes to mind.

Blackthorn – Prunus spinosa

The path back down to the Woodland Trail felt almost bridal with falling petals showering down onto the ground like confetti. A pretty way to end this account of a lovely walk.

September Hillside

24 Sunday Sep 2017

Posted by in British hoverflies, Bryn Euryn Nature Reserve, Butterflies of Wales, calcareous grassland, hoverflies, Nature of Wales, North Wales, slugs & snails, Wildflowers of Wales

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September 8th-Bryn Euryn

As I’ve already said, it was mighty windy out here on the not-quite-summit of the hill; not the day for hanging around gazing at the views, no matter how stunning they may be.

Windswept not-quite-summit of Bryn Euryn

A quick look around showed there to be little left in the way wildflowers in bloom, but there was colour on a wild rose – a whole colony of bright red Robin’s Pincushion galls. I don’t recall ever having seen as many on a single plant. The fuzzy growths will gradually fade to brown and the little wasps that cause the growths will emerge in June. If I’m lucky, one of these days I’ll catch them coming out, although the galls also attract ‘squatters’ and there can be a dozen or more species lodging in there!

I was to keen to keep moving, but when I spotted this lovely patch of Eyebright I couldn’t resist stopping again.

The dip between this part of the hill and the slope up to the summit is usually sheltered and offers a brief respite from the wind and the noise of traffic from the A55 below, but not so today. Yarrow likes this spot and there was quite a good large patch of it still in flower here. As with Eyebright, Yarrow is a plant designed to withstand tough growing conditions and is pretty persistent, as anyone that has tried to eliminate it from a lawn will testify; you cut it down and it grows right back! Personally I prefer the ferny-leaved Yarrow to the boring grass! Funny how we discriminate against certain plants, this wildflower Yarrow’s taller-growing golden-yellow flowered relative, Achillea, is a cherished garden plant!

Some insects rather like its flowers too, I found a tiny bee motionless on a flower today and recalled I’d seen a similar looking insect on Yarrow in the Rhiwleddyn reserve a few weeks ago.

Tiny bee on Yarrow – enlarged

On the summit a patch of purple Knapweed was fuelling a few Common Carder bees that were managing to cling on and fly short distances despite the best efforts of the wind to dislodge them. The little bees had varying appearances; some were practically perfect, others a bit more battered, their ‘fur’ worn away and at least one that had a bleached appearance like it had spent too long out in the sun.

Common carder bee-practically perfect
Common carder bee-a little faded
Common carder bee-fur worn from back
Common carder bee-bleached

There was another lovely clump of Eyebright up here, this one framed by the distinctively-arranged pods that give the Bird’s-foot trefoil its name.

More Yarrow too, this plant sheltering a tiny fly.

I was hoping that the other side of the hill would be a bit more protected from the wind, but alas, most of it wasn’t. The sun was putting in sporadic appearances though, so at least it felt a bit warmer. Ironically, the sea looked to be calm, was coloured in shades of beautiful blue and its surface merely ruffled. The blades of the wind turbines were motionless.

Looking over in the opposite direction to te sea, the view to the oddly-shaped hill at Deganwy, was fairly clear, although beyond it, Anglesey and the Menai Strait were shrouded in a light haze. I’m not sure if I’ve mentioned it before, but the hill is named the Vardre and gets its unusual appearance from having two rocky summits. It has a little less height than Bryn Euryn, it being 108m, (354 feet) while the Bryn is 131m (365 feet). It was once home to fortifications that included Deganwy Castle.

On the woodland edge leaves are beginning to change colour. Hawthorn is one of the first to go

along with Silver birch as I mentioned in the previous post. Out here in the open it was easier to appreciate the combination of yellow leaves against a clear blue sky.

Next to the Silver birch is a single Whitebeam, which bears berries. The berries are orange in colour now but will gradually turn red.

In the short grass there are still a few Rock-roses in flower and here and there are big fat ‘penny-bun’, or Bolete mushrooms. At least they would have been big and fat before they were nibbled away. I like the different shades and textures such nibbling has left on this one; there was a little black spider on it too.

I have often wondered what nibbled the mushrooms. A picture I took a few weeks ago, at the end of July may have the answer. The sight amused me and I wondered if it was a romantic al-fresco lunch for two? Of course there is more to slugs than meets the eye. No gardener is ever going to welcome them onto their plot, but out in the wild they are another important cog in the wheel of the natural waste-disposal system. Although one slug may look rather like another, there are rather a lot of different species of them in our British Isles. I submitted this image to the very helpful folk that run the Slugs and Snails of the British Isles Facebook Group, who responded that to be accurate they need to see the undersides of the slugs too, but from other features that it is likely they are juvenile Arion flagellus – the Green-soled slug.

poss. Arion flagellus- the Green-soled slug

The bottom of the grassy ‘downland’ hill was still flowery with Hemp Agrimony, Knapweed, touches of Scabious and a sprinkling of Ragwort.

I walked down to where it meets with the woodland edge and lo and behold, for a few glorious minutes the sun came out. Suddenly it was warm and bright and the scene came alive with a whole host of insects vying with one another for the best blossoms.

Speckled wood on Hemp agrimony

I hardly knew where to look first, but then couldn’t resist the sight of a pristine Speckled wood feasting on Hemp agrimony. There were several of them, all looking freshly beautiful; most were nectaring on various flowers while some rested on the leaves of nearby trees basking in the sunshine. The only other butterflies in evidence were Red Admirals which unusually stayed out of range of the camera.

Speckled wood on ragwort

There was a good variety of hoverflies,large and small, a Common wasp and more Common carder bees too.

Hoverfly – Eristalis sp
Hoverfly – Eristalis sp
Hoverfly-Helophilus sp
Common wasp

Common Carder bee on Scabious

Volucella zonaria

A beautiful cast of insects, but the star of today’s show was a big handsome hoverfly, which surprisingly doesn’t have a common name, but whose scientific name, Volucella zonaria makes it sound a bit like an Italian pasta dish. This is the largest British hoverfly and is quite a recent addition to our native list, appearing on the south coast of England during the late 1930s. According to my Hoverfly bible, from there it has spread upwards and outwards across the country as far as Cheshire and Humberside and South Wales in the West. We’re not so far from the Cheshire border here, so they must still be spreading, this is the second one I’ve seen this year, the other was in my daughter’s garden a few weeks ago.

The spell of sunshine didn’t last long and the wind was still blowing relentlessly; time to set off in the direction of home.

Wind-blown ash tree

 

 

 

 

 

 

The life of a Yellow Dung-fly

05 Tuesday Sep 2017

Posted by in Insects, Nature, Nature of Wales, Wildlife of the Wales Coast Path

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This post is possibly not one for the squeamish, but lately I’ve become more aware of these bright little flies and given thought to the vital role they and their kind play in maintaining balance in our environment, so decided it was time to learn more about them. Yellow dung-flies are one of the most familiar and abundant flies here in the United Kingdom and indeed throughout much of the Northern Hemisphere. They are out and about from March to November and at their peak in the summer. Anyone that walks in the countryside, particularly in areas where there are large mammals will undoubtedly have seen them. They may look a little fearsome close up, but are harmless to us, they do not sting or bite people or other animals!

Common Yellow dung-fly or Golden dung-fly – Scathophaga stercoraria

Yellow -dung-fly male

As its common name suggests, the life of a Yellow dung-fly, particularly that of the males is centred on, yes you’ve guessed it … dung! They spend most of their lives either upon it, or looking for it. They favour cow pats, but are adaptable and will settle for the dung of other large mammals such as horses, deer or wild boar if that’s what’s available. Unsurprisingly here in Wales they mostly have to settle for that of sheep.

 

Male and female yellow dung-flies

Dung-flies belong to the Scathophagidae family of flies which are integral within the animal kingdom in the role of  assisting in the process of the natural decomposition of dung in fields and grasslands. 

Description: 5-11mm long. Average lifespan is 1-2 months. Sexually dimorphic, males are golden-yellow with orange-yellow fur on their front legs and are larger than the females. Females are generally duller in appearance, more of a green-brown colour and have no brightly coloured fur on their front legs.

Behaviour 

Males and females are attracted to fresh dung by its scent and actually approach deposits flying into the wind. Males spend most of their time on the dung waiting for females to mate with and being predatory insects, sometimes feeding on other insects that visit the dung, such as blow flies. Females on the other hand spend most of their time foraging in vegetation and only visit dung to mate and subsequently deposit her eggs.

Reproduction 

Rival male dive-bombing a mating pair

The male-female ratio of flies on a dung pat is typically heavily biased towards males. Often several males can be seen waiting for a female to arrive, so if and when one does, competition to mate is high: the smaller, outnumbered females don’t have much say in choosing their mate.

The act of copulation lasts 20 to 50 minutes during which the couple may be subject to aerial attacks from rival males attempting to dislodge the male. When the act is completed, the male attempts to guard the female from the attentions of other males, although both males and females often mate with several individuals.

Life-cycle

The adult dung-fly is mainly carnivorous, catching and eating smaller insects, but they also eat nectar. After mating females lay their eggs on the dung, where she selects small ‘hills’ on its surface, deliberately avoiding depressions and sharper pointed areas. This strategy is aimed at preventing desiccation and drowning thus giving eggs and offspring the greatest chance of survival. Depending on ambient temperature eggs hatch into larvae after 1-2 days. Larvae burrow quickly into the dung for their protection and proceed to feed on it; they also predate on other insect larvae also living in the dung. They grow rapidly and after 10-20 days the larvae burrow into the soil around and beneath the dung where they pupate.

Environmental influences 

The Yellow dung-fly has a short life cycle, a factors that has made them of interest to scientists, who have been able to study not only the insects themselves but also the effects various environmental factors has on them. For example:

The viability of a clutch of eggs depends strongly on the environment. In warmer climates a sharp drop in population occurs during the summer when temperatures increase to 28° or above. This does not happen in places with a colder climate such as Iceland, Finland and the north of Britain, nor at higher elevations.

The health of juvenile dung flies is in turn affected by the quality of the dung they inhabit, factors such as water content, nutritional quality, the presence of parasites & drugs and chemicals given to the animal that excreted it may all contribute.

 

 

 

 

 

 

 

Tawny Mining Bees & the Bee-fly

09 Sunday Apr 2017

Posted by in garden wildlife, Insects, Nature, Nature of Wales, nature photography, North Wales

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April 1st – Garden, Rhos on Sea

In the late afternoon sunshine a number of little bees were zooming around in a corner of the front garden, pausing frequently but briefly on the warmed surfaces of ivy leaves. I have seen similar ones here each spring for the last five years, so was pretty sure they were male Tawny Mining Bees, but I had to wait a while for a prettier and more distintinctive female to take a breather from her nest-building labours to be sure. Males significantly outnumbered females here this afternoon, probably because they don’t contribute in any way to constructing nests or to raising offspring, so once mating is accomplished by a lucky few, they are free agents.

Tawny Mining Bee – Andrena fulva

The rich fox-brown colour and furry coat of the lovely little Tawny Mining-bee (Andrena fulva) makes it the most distinctive and obvious of all the Spring-flying solitary bee species.  It is a common bee in much of England and Wales, which nests underground and leaves a little volcano-like mound of soil around the mouth of its burrow. Nests can often be seen in lawns and flowerbeds in gardens and parks, or in mown banks and field margins in farmland and orchards.

Description

Size: Females 10 to 12 mm and males 8 to 10 mm long.

The Tawny Mining Bee is a small rich gingery-orange coloured bee that can often be seen visiting its nest in grassy areas such as lawns during the springtime.

Females are larger than males and covered in a dense layer of fox-red/orange hairs. Their underside is black.

Tawny Mining Bee female

The males are quite different to the females. They are much slimmer, covered in less dense orangey brown hair and have a distinguishing pronounced moustache-like tuft of white hairs on the lower face. They play no part in nest building or providing for their offspring.

Tawny Mining Bee male

When to see it

The bee has a single flight period each year and is on the wing from early April until early June; the males emerging well before the females.

Peak activity coincides with the flowering periods of fruit trees such as Pear, Cherry and Apple and also of fruiting shrubs such as currants, gooseberries and other Ribes species and are important pollinators. The female collects pollen and nectar for the larvae which develop underground, each in a single ‘cell’ of the nest, and hibernate as pupae over winter.

Habitat

Tawny Mining Bee feeding on Alexanders

The bee is common in gardens, parks, calcareous grassland, orchards and on the edges of cropped agricultural land.

Andrena fulva nests are constructed in the ground, and the nest entrances are surrounded by a volcano-like mound of excavated spoil. Nests are often in loose aggregations in tended lawns, flower beds, mown banks and in sparsely vegetated field margins. Pollen is collected from a wide range of plants including flowering trees and shrubs, weeds and garden species. 

Life History

Having hibernated through the Winter, Tawny Mining Bees emerge in Spring as adults; the males emerging well before the females. After mating, the female seeks a place to make a nest. The bees’ tunnelling throws up small heaps of waste soil, that look like tiny molehills or volcanos with the entrance/exit hole at its summit. You may notice these little heaps in your lawn without associating them with the bees. They won’t spoil your lawn! The nests are short lived and do not damage plants or harm earthworms. 

The bee’s mining throws up small ‘volcano-like’ heaps of soil with an entrance at the summit

Nests will often consist of one small, main tunnel, with perhaps 5 or so branches, each containing an egg cell. The nest is a vertical shaft 200 to 300 mm (8 to 12 in) with several brood cells branching off it. The female fills these cells with a mixture of nectar and pollen, on which she lays one egg in each cell. The larva hatches within a few days, grows quickly and pupates within a few weeks to repeat the cycle as new adults emerging the following spring after hibernation.

 

Sometimes more than a hundred females build nests in a few square metres but the Tawny Mining Bee normally does not create a colony: each female has her own nest. 

Distribution in Europe

According to BWARS, the Tawny Mining Bee is common across most of England and Wales, there is only a single confirmed Scottish record, and only old, tantalizing records from Co. Kilkenny in Ireland. On continental Europe, the species is widespread and common from Britain eastwards across central Europe. It is not found in Scandinavia and is restricted in the Mediterranean region. 

April 7th

Checking up on the Tawny Mining Bees today I noticed a number of the diagnostic little ‘volcanos’ have appeared in the bare line of earth between the lawn edge and the ivy-covered front wall.

Female Tawny Mining Bee covered with dusty earth from her nest

I spotted females going in a few times and there are still males hanging around close to the nest sites. I photographed one female as she had emerged from her nest, her legs, head and furry body coated with a layer of dusty earth.

As this garden is having a bit of an overhaul at the moment, there are very few flowering plants for the bees to nectar on, so they are having to seek food elsewhere. Poor things must be worn out, all that digging, producing eggs and having to fly across the road to find food.

An Enemy in the Camp

The bees carried on industriously, seemingly unaware they were being watched by a potential murderer of their offspring. The sinister character, a Bee-mimic, looks a little strange; it has a long rigid proboscis at the front of its head which it uses to tke nectar from flowers while hovering over them and long trailing legs. They are also quite cute, furry, lovely to see and entertaining to watch – this was a Bee-fly Bombylius major.

 

Bombylius major has several host species, including beetle larvae and the brood of solitary wasps and bees particularly digging bees such as Andrena, like our Tawny Mining Bees.

Bee-fly approaching Tawny Mining Bee’s nest
Bee-fly using its long legs to flick her eggs into the Tawny Mining Bee’s nest

The Bee-flies mimic bees to allow them to get close to the bees nest entrance. When close enough, the female will flick her eggs into or near the nests of the host insects. The larvae will then hatch in the nest and feed on the food stored, as well as on the young solitary bees or wasps.

I knew this is how Bee-flies behaved, but hadn’t witnessed their egg-flicking behaviour before today. I have to admit it is fascinating, while feeling a bit sad about the possible outcome for some of the poor hard-working Miners. But then I like to see the Bee-flies too…..

 

 

 

 

 

 

 

Ivy Bee update

09 Sunday Oct 2016

Posted by in Insects, Nature, Nature of Wales, North Wales, Rhos-on-Sea

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October 9th

If you’ve been on the lookout for Ivy bees, the latest updated map of sightings (including mine!), has been published on the BWARS Facebook page today:

More news on Colletes hederae. The total number of records received as we head into the second day of the BWARS AGM weekend stands at 521. Today we received the wonderful news that the bee has been found in Lancashire for the first time, at Heysham. This is by some distance the most northerly record on the west coast. Perhaps a really thorough search at points between the north Wales population and the newly discovered one at Heysham might be possible? I know we have some very keen bee folks in Cheshire and west Lancs. I repeat that we still want records from sites which have had C. hederae in previous years, as well as multiple visits over the 2016 flight period.

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May Bee Appearing on Ivy near You

07 Friday Oct 2016

Posted by in garden wildlife, Insects, Nature, Nature of Wales, nature photography, North Wales, plants important to wilflife, Rhos-on-Sea

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I know our native evergreen climbing ivy can be a pain in a garden, but at this time of year when it’s flowering it is a magnet to a wide variety of late-flying insects. To one particular little bee that has set up residency here in Great Britain in recent years, it is vital.

October 6th

It’s always exciting to see a ‘new-to-you (or me)  species on your own patch and this week I had my first sightings of a little solitary bee I have only recently become aware of. It is commonly named the Ivy bee, as its emergence is set to coincide with the flowering time of yes, you guessed, the common but invaluable to late flying insects Ivy or Hedera helix, on which it feeds.

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4/10/16-First ever sighting of an Ivy bee-Colletes hederae

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Ivy bees are found in Austria, Belgium, Channel Islands, Croatia, Cyprus,France, Germany, Greece, Italy, Luxembourg, Netherlands, Serbia, Slovenia, Spain and Switzerland and are recent arrivals in Great Britain, but spreading and establishing fast.

BWARS – The Bees, Wasps & Ants Recording Society has been mapping the spread of the Ivy bee since its discovery in Britain 15 years ago. They say:

Colletes hederae was recorded as new to Britain in 2001 when Ian Cross discovered specimens at Langton Matravers in Dorset. Since then, the bee has spread across much of southern England (as far north as Shropshire, Staffordshire & Norfolk) and into south Wales. It is now extremely plentiful in some coastal localities, and increasingly, inland. Peak activity matches the flowering period of its key pollen forage plant, Ivy (Hedera helix), and the species is on the wing from early September until early November. This makes it the last solitary bee species to emerge each year. 

Where to find them

161006-rosrc-ivy-bee-2Ivy bees like patches of flowering ivy in sunny spots, often in gardens.They look like small honeybees but have an orange-yellow striped abdomen and a furry ginger thorax, so they are quite noticeable as they bustle over the green balls of ivy blossom. If there is a nest site nearby you may see several of them on the flowers at any one time.

161006-rosrc-ivy-bee-4Ivy bee lifecycle

Unlike the larger honeybee, which is a social insect and has queens, drones and workers, the ivy bee is solitary. They are mining bees and after mating, a female Ivy bee digs out a burrow in loose earth or sand, and creates underground chambers. She then lays several eggs which she stocks with pollen to provide food for the larvae when they hatch. Although each female ivy bee digs her own burrow, tens or even hundreds of females nest close together in colonies, usually on sandy banks.

As with many insects, the mating process may be a brutal affair. Male bees wait by the burrows for females to return, then ambush them. Many males may attempt to mate with a single female in their quest to sire the next generation, forming a writhing mass – or mating ball. The female dies a few weeks after mating and laying her eggs, but the larvae pupate and become adults, staying underground until autumn, emerging to repeat the cycle.