The Irish Naturalist

By Owen Beckett

Tag: butterfly

Common Blue, Killard Point, Ireland, June 2020

Killard Point: Some recent highlights from one of Ireland’s finest nature reserves.

September 16, 2020 /

Killard Point is a small headland situated south of Strangford Lough along the coast of County Down. It is comprised mostly of coastal meadows with smaller areas of dune, scrub and cliff-face, each with their own highlights. Its primary drawing card is its plant diversity but in my opinion it is also very much an underrated site for insects, something which kept me coming back throughout the summer!

Butterflies

The variety of butterflies which occur here is not exceptional, but it is a definite hotspot for several more localised species and the numbers of such species here can be exceptional. Dark Green Fritillaries can be found in unimproved grasslands and rough heathy sites across Ireland, but are often much more abundant at the coast and here they can be seen in good numbers throughout June and July. They are joined during this time by the Common Blue, which linger on until August. There are two Satyrid species which occur here in large numbers; the Small Heath and Meadow Brown. The former is seen mostly in May and June, then again in smaller numbers in August whilst the latter is seen from June-August, with a definite peak in July.  The Grayling (which is local in Ireland) also occurs here although I have never seen it. The site also attracts several other ‘generalist’ species like Red Admiral, Peacock, Small Tortoiseshell, Large White, Small White and Painted Lady, whilst the migratory Clouded Yellow also occurs here in the autumn in favourable years.

Bumblebees

The density and variety of wild flowers are a big attraction for bumblebee species and I have recorded several species here, some common and others scarce. One of the commonest bees here is the Red-tailed Bumblebee (Bombus lapidarius). This species has declined in Ireland and shies away from areas of intensive agriculture, but is abundant here due to the pristine unimproved meadows. It is commonly seen feeding on Bird’s-foot Trefoil, Restharrow, Common Knapweed and Field Scabious. The Red-tailed Cuckoo Bee (Bombus rupestris) which uses the previous species as its host occurred here at one stage, although it is not known whether it still exists at the site. Although I have yet to find it, the strong host populations would suggest that it is certainly possible. Other common species include the Garden Bumblebee (Bombus hortorum), Buff-tailed Bumblebee (Bombus terrestris) and the White-tailed Bumblebee complex (Bombus lucorum agg.), a group of closely related bees that cannot be separated without DNA testing.  The Common Carder Bee (Bombus pascuorum) is also very abundant and occurs here alongside the similar yet much rarer Moss Carder Bee (Bombus muscorum). The latter is a much-declined bumblebee of damp unimproved grassland and flowery meadows and Killard Point is one of the few sites in NI which is still inhabited by this species.

Solitary Bees

Killard Point has several south-facing glacial till and sandy cliff faces, as well as numerous  consolidated sandy patches, all of which are prime nesting areas for a variety of solitary bees. It is a very important site in a national context with dozens of species recorded here. This year I managed to see a good variety of these, including the rediscovery of the very rare Colletes daviesanus, which had not been seen in Ireland for 40 years. Other less common species seen here included Andrena nigroaenea, Nomada goodeniana and Lasioglossum nitidiusculum, in addition to commoner species like Halictus rubicundus, Lasioglossum villosulum and Lasioglossum calceatum, in addition to various Sphecodes species. The site offers great potential to find new populations of solitary bees and I intend to return in the spring to see if I can add to my list of species seen here.

Other Insects

For me personally, bees and butterflies are the main focus but I still keep an eye out for any other insects that happen to cross my path. Whilst walking across Killard during the summer months, it would be hard not to notice the numbers of Cinnabar and Six-spot Burnet Moths. They are both medium-sized, black and red day-flyers that favour open grassy areas, with the Cinnabar emerging in May and the Burnet in June. Other moths I have seen here include the migratory Hummingbird Hawkmoth and the local Yellowtail Moth.

Grasshopper species include the Common Green and Field Grasshoppers, which in turn attract the predatory solitary wasp Tachysphex pompiliformis. The site in general is great for solitary wasps, as I have also seen potter wasps (Ancistrocerus sp.), Ruby-tailed Wasps (Chrysis sp.) and the impressive Amblyjoppa fuscipennis. Social wasps include the Norwegian Wasp (Dolichovespula norwegica).

Birds and other animals

Admittedly, species under this category do not draw my attention as much as they perhaps should, as I tend to be looking towards the ground during my walks here, not skyward! Nevertheless i have still managed to come across a few local or less common bird species whilst I have been here,  the chief among these being the Sand Martin. Whilst not rare, it is a patchy species in Ireland and requires large sand or clay banks for nesting. The Skylark is a much-declined bird in Ireland and has suffered due to changes in crop cycles and agricultural intensification, although it still occurs at Killard Point. Meadow Pipits share the long Marram grass with the Skylarks, whilst the Kestrel can be seen hunting in these open areas, sometimes in threes or fours. Along the shoreline, Oystercatchers are a common sight and Common Seals sometimes beach themselves when it’s quiet.

Plants

As an area of unimproved grassland devoid of herbicides or fertiliser, Killard supports a wonderful array of plant species. In spring it sees a mass-flowering of the attractive Spring Squill, along with its relative the Bluebell which creates a wonderful carpet of pale blue across parts of the reserve. The meadows support several legumes such as Kidney Vetch, Bird’s-foot Trefoil and Restharrow whilst Tufted Vetch grows in some of the more scrubby areas. Other plants in the meadows include Wild Thyme, Field Scabious, Common Knapweed, Eyebright, Lady’s Bedstraw and various Hawkweeds. Thrift, Scarlet Pimpernel, Wild Carrot and Wild Radish grow close to the sea here whilst White Stonecrop grows along the old stone walls nearby. The main attraction for botanists however is the variety of orchids that occur here, particularly the presence of the elusive and stunning Bee Orchid. Other commoner orchids include the Common Spotted Orchid, Twayblade and Pyramidal Orchid.

 

The French Pyrenees – Part 2 – July 2019

August 18, 2019 /

On the third and fourth days of our trip to Gavarnie, we decided to walk up the Val d’Ossoue, a meandering valley which ultimately leads to Vignemale, the highest of the French Pyrenees. Our goal however was not this peak but a picturesque reservoir about 9km along the valley; one which would hopefully be much more achievable! What was interesting about this valley was that despite its close proximity to the Cirque, the scenery and wildlife were rather contrasting.

After stopping in the shop to stock up on food and water we made our way to the foot of the valley on what was looking like a much nicer day. A small meadow near the Gavarnie carpark was alive with butterflies including dozens of Marbled Whites, a few Meadow Browns, Silver-washed Fritillaries, Heath Fritillaries and a few fresh Scarce Coppers. The road led through a small patch of woodland where we saw our first few False Heath Fritillaries of the trip. A couple of damp patches on the road attracted some beautifully-marked Marbled Skippers, as well as more Silver-washed Fritillaries, Chalkhill Blues and Safflower Skippers.

The wooded area soon gave way to more open meadows adjacent to rocky slopes. We were treated to some soaring Lammergeiers and Griffon Vultures  overhead, whilst we heard some calling Marmots further up the hillsides. A Comma was found nectaring by the pathway whilst a rotting bone attracted several Chalkhill Blues as well as an unexpected Amanda’s Blue! Butterflies have a gruesome side too it would seem!

A flowery area beside a small car park had some mudpuddling Spotted Fritillaries, Turquoise Blues and Silver-studded Blues, whilst a rather active Purple-shot Copper of the Iberian race gordius rested only briefly on a flowerhead before zooming away down the valley. It wasn’t long before the first Meadow Fritillary was seen, another target species similar to the Heath Fritillary but with a much less heavily-marked upperside.

With all the butterflies I’ll admit I was a little distracted, but I did manage to spot some Houseleek plants, as well as Round-headed Leek and St. Bruno’s Lily. Past this open area the pathway sticks close to a rock face which continues for a few kilometres. The sun was angled on the rocks which attracted a basking Wall Lizard. Some damp patches by the edges of the road attracted more Spotted Fritillaries as well some Small Skippers, Silver-studded Blues and one or two Escher’s Blues, the first of the trip and another target species!

Near the boundary of the national park there was a small rope bridge where we had a late lunch lunch in the company of several ringlet species, including the Western Brassy Ringlet, Piedmont Ringlet, Lefebvre’s Ringlet and Mountain Ringlet. After lunch we decided to explore the damp riverside areas where we encountered dozens of mudpuddling butterflies. Most were Silver-studded Blues but there were a few Small, Essex and Silver-spotted Skippers, Heath and Meadow Fritillaries, Escher’s Blues, Chalkhill Blues and a solitary Mazarine Blue. Nearby on Yarrow we also noted a beautiful male Scarce Copper, showing off its stunning upperside whilst feeding rather obliviously to us.

After we had finished exploring the river banks it was nearing 4pm and with the descent still to complete, we decided not to press any further and turned back with the intention of getting a well deserved drink! The journey back down the valley also proved very productive, with the milder temperatures resulting in more sedated butterflies. Several Apollos glided down from the hillsides to feed on Knapweed and they were joined by Marbled Whites and a few Lesser Marbled Fritillaries. I spotted an Escher’s Blue perched nicely on a Scabious flower which was soon followed by a Turquoise Blue sunning itself by the roadside. Several other species were roosting or basking in the meadows on the journey down, including Spotted, Meadow and False Heath Fritillaries, Silver-spotted, Small, Safflower and Marbled Skippers, a Southern White Admiral, Large Wall Browns and several Chalkhill Blues.

After taking a few final photos we made our way to our B&B before dinner. I was delighted after such a successful day but I still wanted to get to the picturesque Barrage d’Ossoue and Anna agreed so the next morning we set off again.

Due to how long it took us yesterday we decided to try our luck at hitch hiking our way there and back. We only had to wait 5 minutes before an obliging French couple agreed to take us most of the way; to around 3km before the dam itself. It was another beautiful day and after walking for only a few minutes we were treated to the sighting of a rather inquisitive Marmot who sat on the dirt track quite obediently. A couple of hundred metres further up the track were some small mountain streams flowing across our path which attracted a cluster of mupuddling blues. Among them was a real alpine specialist and one which I was delighted to see, the Glandon Blue. A solitary female was unremarkable in appearance but this rare species is only found in sub-alpine and alpine areas of the Alps and Pyrenees, making it a wonderful find.

I was chuffed after finding the Glandon Blue, however seeing it was somewhat eclipsed by the sighting of its even scarcer mountain-dwelling relative, the Gavarnie Blue. This similar species has a brighter upperside with little or no black on its underside hindwing spots, helping confirm its identity. It is only found in a few sites in the Pyrenees and the Picos de Europe in northern Spain and was by far the find of the trip.

In the final kilometre or so before the dam there were numerous other species of butterfly, such as the Apollo, Clouded Yellow, Chalkhill Blue, Turquoise Blue, Heath Fritillary, Dark Green Fritillary and Marbled Skipper, mostly taking minerals from the damp ground. By the time we reached the dam we were ready for lunch which we had on a grassy bank surrounded by Turquoise, Escher’s and Silver-studded Blues, Apollos, Safflower Skippers, Lefebvre’s Ringlets and a few new species such as the Large Grizzled Skipper and the mountain dwelling Shepherd’s Fritillary, two lovely additions which capped off a fabulous butterfly list for the holiday. With cloudless skies, pristine alpine water and abundant wildlife, I can’t imagine that it will be long before I’m back here; a truly magical spot. OB

Spring Butterflies 2019

May 4, 2019 /

After a long winter, the first few days of warm sun and clear skies were very welcome. With it, there came the first few butterflies of the year. In the north of Ireland, it’s Peacocks and Small Tortoiseshells which emerge first, usually in late March where they will be found sunning themselves and feeding on dandelions. They often are quite tattered and dull, due a long winter spent in a tree hollow or shed having emerged the previous summer. It’s only in late April or early May however that the variety of butterflies starts to really increase.

Orange Tips are real springtime butterflies, emerging just as their foodplant, Cuckooflower begins to bloom. Males will perch or patrol their territory in the hope of coming across a female, who tends to fly slower along the verges in search of egg-laying sites. Green-veined Whites also share this foodplant and tend to emerge around the same time. In early May they are further joined by emerging Small and Large Whites, who tend to prefer gardens and rich flowery areas and the Irish speciality the Cryptic Wood White.

In woodland areas and sometimes in gardens, Holly Blues will emerge alongside the ever-present Speckled Wood. The Holly Blue is one species in Ireland that has been steadily increasing in both range and abundance for several years now. I had never seen one in my garden until around 2012/2013 and now they are seen every spring, with the occasional one in late summer. In scrubby areas, especially near bogland, Green Hairstreaks are a welcome sight. These little green jewels dart around bilberry and gorse bushes before landing suddenly and angling their wings towards the sun to warm themselves up.

Aside from butterflies, there are many other creatures who show themselves once the days begin to lengthen and the weather picks up. Queens of the Early, Garden, Buff-tailed, White-tailed, Red-tailed and Common Carder Bumblebees awake after a long hibernation in our gardens and woodlands and immediately start searching for fresh dandelions and willow blossom to replenish their energy levels before starting a new colony. In more rugged rural areas they are joined by the Heath, Moss Carder and Red-shanked Bumblebees. Solitary bees also start to appear around this time, with species such as the Ashy Grey Mining Bee buzzing in and out of their burrows.

Along with our resident bird species, we welcome visitors from Africa and Europe such as the Cuckoo, Swallow, Chiffchaff, Blackcap, Sedge Warbler and House Martin to name but a few, who soon fill the air with their songs and calls. With Daffodils blooming, tree leaves bursting out and Bluebells carpeting our woodland floors, how can you not love spring?

Zadar and Paklenica: July 2018 (Day 4)

September 18, 2018 /

Before I came to Zadar, one area I read about consistently whilst searching various websites for information on Croatia’s wildlife was Paklenica National Park. From what I could gather it was filled with interesting rock formations, pristine forests, a myriad of wildflowers and tonnes of different animal species; so when the day came where I was finally able to visit it I admit I was rather excited!

Because I only had one day to visit I planned a route which would allow me to see as wide a variety of wildlife as possible, or so I hoped. My planned route would take me from the entrance of the park, through a large gorge up 400m to a small hut. From there I would ascend a further 1000m up a valley through Beech and Pine woodland to a large, open mountain meadow called Struge and then return to the park’s entrance. All in all it would take me about 10 hours to complete so on the 28th of July I woke at 5 in the morning full of anticipation!

After a 30 minute drive I began my hike. Starting at 6:30 allowed me to get a good portion of my walking done before the sun rose above the gorge and it got too hot. After about an hour of walking I reached the Paklenica Mountain Hut, where I took a much-needed break. The temperature was creeping up steadily and it wasn’t long until I saw my first butterflies of the day. 5 minutes from the hut was a small hostel with some patches of Cream Scabious flowers, which attracted a lovely range of species, including Queen of Spain, Silver-washed and High Brown Fritillaries, Southern Small Whites and Large and Mallow Skippers. At this point the pathway became a little more ambiguous so I stopped to ask the hostel owner, who insisted that i take some local Rakija before we spoke, which I politely declined (homemade brandy before 9am before an arduous hike above steep cliffs seemed like a dodgy idea) Under the assurance that I would be back later for a drink, he guided me in the right direction and I was on my way.

From this point the path veered westwards, as I began to walk through the dense Pine and Beech woodland up the side of one of several valleys and the shade it provided was rather welcome. The odd clearing allowed for several flowers to grow, such as Wild Thyme, Italian Eryngo, Allium, Cream Scabious and Greater Knapweed, which in turn attracted many butterflies. Holly Blues were rather numerous, along with Silver-washed Fritillaries and Woodland Graylings, with the odd Marbled White and Pearly Heath making an appearance. I was delighted to find Meleager’s and Chalkhill Blues, as they were both new species for me. As I climbed higher to around 1000m, Scotch Argus butterflies became quite abundant, although they were very reluctant to settle for me!

As I continued to ascend the landscape opened up and I soon found myself among light scrub with a whole new host of species. Crag Martins and Swifts soared above the peaks, along with what I believe to be Choughs and the odd larger bird of prey, mostly Peregrine Falcons. Thyme and Scabious flowers hugged the path’s edges, which in turned were hugged by Blue-spot Hairstreaks. One or two Mountain Small Whites were about along with the usual combination of Fritillaries (Silver-washed, High Brown and Queen of Spain). A Great Sooty Satyr perched nicely on the pathway in front of me, as did several Meadow Browns, Scotch Arguses and Graylings. The star of the show was one of the prime targets of the trip: the Apollo. The large mountain butterfly glided around the rocky pass as if it was viewing its kingdom and it had a certain ‘aura’, which despite the myriad of other species flying around, managed to totally captivate me.

Just on up from the Buljma Pass was Struge, the large alpine meadow which was as far as I had planned to go. It was odd that two locations in such close proximity would display such a contrasting range of species. Gentian flowers, Thyme, Scabious and Thistles, along with several fine grasses, dominated this area, which was fringed by clumps of Dwarf Pine, a species restricted to mountains. Mountain Small Whites and High Brown Fritillaries , along with Chalkhill Blues, were very abundant here. Several Erebia species, such as the Mountain, Black and Ottoman Brassy Ringlets flew here too which was a real highlight for me. I sat there for about 45 minutes just soaking up the atmosphere, as long as I could spare before it was time for me to begin my descent.

On my way down in addition to many species mentioned already, I saw a Brimstone and a rather fierce-looking Stag Beetle, as well as a Southern Comma and a Balkan Whip Snake. I’ll admit I didn’t pay as much attention to the wildlife on the way down, as my descent was hastened by the promise of dinner by the promenade in Zadar! My only stop was for an ice-cold beer in the hostel before meeting mum again in the car park; not a bad way to finish the hike!

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