Butterfly Islands

Tuesday, 25 April 2017

Cold Wind Slows Down the Butterflies.

Temperatures have plummeted in the last day or so but at Whiteways the butterflies have kept active.The unique position of the site has allowed the butterflies to make the most of the warm sunshine and the effect of the cold northerly wind is kept to a minimum.The Grizzled Skipper was prominent with at least two seen,along with four Small Blue and six Green Hairstreak.

Saturday, 22 April 2017

Small Blue Out in Numbers.

A visit to Whiteways this afternoon rewarded me with at least four Small Blues frantically flying around between bouts of sunbathing on any blade of grass.This is the earliest sighting for Small Blue here since 2012 when they emerged on the extremely silly early date of 30th March.

Friday, 21 April 2017

Finding a Place to Roost.

It has been a cloudy day and during a very brief brighter spell this afternoon a male Orange Tip floated into our garden on the lookout it seems, for a spot to roost.He finally landed on an emerging daisy,Anthemis punctata cupaniana at the edge of a flower border where he soon settled down for the rest of the day.

Wednesday, 19 April 2017

Small Copper Another First of the Season.

Butterfly sightings and activity have slowed down over the last week or so, probably due to the cool weather.However the sun is still shining and in sheltered spots in can feel pleasant.At Whiteways Quarry today a Small Copper made an appearance,my first sight of this species in 2017,along with that elusive Grizzled Skipper.In addition there are up to three Green Hairstreaks busily flying around defending their territories.
Meanwhile the Berberis in my garden is still attracting the butterflies with a Holly Blue feeding on some of the remaining blooms.

The Adonis Blue

The Large Tortoiseshell

It seems the general view on the status of the Large Tortoiseshell in Britain is that it is now extinct as a breeding butterfly.
It is a butterfly of woodland edges and hedgerows that abound in willows,elms,and poplars.These trees are used by the adult to lay its eggs and this single brood appears in July and August.The emerging butterfly then hibernates over the winter in log piles and hollow trees until the next spring.
On the Isle of Wight sightings are more often than not made from early March to April.Have these butterflies overwintered on the Island or have they come from the continent where it is common?
Any sightings made in July/August pose the same question.Another explanation could be that captive-bred releases are responsible.Only the discovery of eggs and caterpillars will probably answer these questions.

I can now report that evidence has been found of breeding just along the coast at Portland in Dorset (June 2020) and again at the same location in the summer of 2021.

The Glanville Fritillary

This elegant butterfly is mainly confined to the crumbling undercliffs and chalk downs of the Isle of Wight.It is also found on the Channel Islands and at one or two isolated colonies on the British mainland.In Britain the Glanville Fritillary is at the extreme north-western edge of its range.On the continent it is readily found in flowery habitats.
Around the southern shores of the Isle of Wight the cliffs constantly erode causing them to slip away and provide perfect conditions for new growths of the butterflies laval host plant,Ribwort Plantain.
The eggs are laid to the underside of the leaves of this plant and normally hatch after about three weeks.The resulting caterpillars live together in communal webs spun over the plantain.In the autumn they hibernate and recommence feeding in the spring,eventually dispersing to prepare for pupation.
The adult butterfly is on the wing from May to the end of June with the female being larger than the male.They will feed on,amongst other things, Birds-foot Trefoil and Thrift.

The Wall Brown

On the Isle of Wight in particular,the Wall Brown is a butterfly of field edges,coastal cliffs and dunes,and rabbit-grazed downland.
The male is territorial and spends much of the time patrolling and basking on the ground.
The female,which lacks the males conspicuous dark sex brand across the forewings,is larger.The undersides of both sexes are beautifully cryptic when at rest.
The Wall Brown generally produces two broods a year,the first from late April until late June and the second from mid-July to mid-September.