Back on Broughton Down.

Last years visit to Broughton Down in Hampshire was marred by  very changeable weather.However this year the sun was shining and temperatures exceeded 30 degrees celsius.Following reports that several Silver-spotted Skippers were seen recently on the Down I decided to make the trip from the Isle of Wight.My optimism was somewhat dampened however following an encounter with another Silver-spotted enthusiast who was just leaving the Down.He had only seen one skipper,so I was wondering if I had timed my visit too early this year.I am very glad to say that after some searching I managed to see three Silver-spotted Skippers,more in fact than on my trip last year which was almost two weeks later.

View of  the Down southwards from the 'Plum Pudding' tumulus

Silver-studded Blue in the New Forest.

An unexpected chance to spend a couple of hours in the New Forest this afternoon resulted in a visit to Latchmore Brook  close to the town of Fordingbridge.While exploring the boggy feeder streams that run into the brook for the Scarce Blue-tailed Damselfly, several male Silver-studded Blue butterflies were seen along the grassy banks.No longer seen on the Isle of Wight this butterfly can be numerous on the New Forest heathland.

Glanvilles Take Over the Slopes.

It is now three weeks since the first adult Glanville Fritillary was reported on the the Isle of Wight.Today on the landslip close to Compton Chine the Glanvilles were out in force despite the seafog rolling in and cooling down the temperatures.In cloudy weather the butterflies tend to snuggle down in the long grass but there were still plenty to see nectaring on the thrift and ribwort plantain.It certainly looks like another good year for this butterfly and encouraging are sightings made in the east of the Island.

Glanvilles Showing Well.

At this time of year the cliffs on the Isle of Wight are carpeted in Thrift and these drifts of bright pink attract insects, in particular the butterflies.The number of Glanville Fritillaries are now on the increase and today I saw many on the landslip.The peak of their season has yet to arrive and hopefully there will be many more on the wing during the next few weeks.

Favourite Find of 2016.

The 2016  butterfly season in the UK has been disappointing with sightings down on recent years.The results of The Big Butterfly Count can be viewed here.I have found this trend too on my forays around the Isle of Wight this year.A noticeable lack of butterfly numbers in the common species that I would expect to see doing well as our summer  had good spells of warm,even hot weather.

I was pleased to see that the Newport town centre White-letter Hairstreaks were back on the elm tree where they were discovered in 2015.Along our southern seaside cliffs the Glanville Fritillaries seem to have had a good season too.

During my two visits to the Greek Islands in 2016 I had the treat of  seeing several Lang's Short-tailed Blues and that import from South Africa,the Geranium Bronze which has now spread all along the Mediterranean coast from Spain to Greece.An unexpected sighting was a colony of Lulworth Skippers among the wild flowers of an olive grove on Greek Island of Lefkada.A rare butterfly in the UK,only seen on the coastal cliff tops of Dorset.

However my favourite find was during May when a trip was made across the Solent to the New Forest in Hampshire to see the beautiful Pearl-bordered Fritillary.Now alas,gone from the Island since 2011 due to a lack of sustainable habitat at its last location in Parkhurst Forest.The particular New Forest inclosure visited on that day was named New Copse and despite the rather cloudy weather there were good numbers of these fritillaries on the wing.The habitat here is well managed  for the needs of the Pearl-bordered.

  

More First Sightings.

The weather continues to remain unsettled and today on the Isle of Wight it was generally cloudy with brief sunny spells and a brisk wind. So perhaps the best place to minimise the effects of that wind was to visit my local forest at Bouldnor.When the sun did appear one or two butterflies took to the wing and I was happy to see my first Silver-washed Fritillary of the season.He was feeding on the ample bramble flowers that are in the forest now, but unfortunately for me he decided to disappear over the hedge and was not to be seen again.However another first of the year was not too far away, for close by a male Ringlet fluttered around hoping to find a good basking place.Along the forest tracks were good numbers of Meadow Brown nectaring on the bramble flowers.

Pearly Kings and Queens.

 The Pearl-bordered Fritillary is no longer found on the Isle of Wight.Perhaps the nearest site to see these lovely butterflies is the New Forest in Hampshire which is a short ferry ride across the Solent.

Yesterday we made the trip despite mainly cloudy and breezy conditions.However the sun  did appear at intervals which encouraged the butterflies into some activity.Here in the Forest these Fritillaries seem to thrive due to sympathectic woodland management which unfortunately is completely lacking in their former Island site of Parkhusrt Forest.

New Forest Pearl-bordered Fritillary Habitat.

  

Defyng the Inclement Weather.

The caterpillars of our own Isle of Wight Glanville Fritillary have a lot to put up with.Their habitat is our coastal cliffs which bare the brunt of winter and spring storms that batter the south west shore of the Island.Still this butterfly is use to all that the weather can throw at it and continues to survive in its unique habitat.

Not surprisingly then, that this morning I came across several glanville webs in which the caterpillars remain until April when they disperse to find a suitable place to pupate.The weather today was particularly cold and wet so they congregate in the web for protection from the elements.On sunny days at this time of year they will become active around the web and feed on their food plant,Ribwort Plantain.

Further information on this special butterfly can be found  here.

Glanville caterpillars huddle up against the wet and cold weather.

Top Highlight of 2015.

The past season has thrown up several exciting sightings, such as the close encounter with White-letter Hairstreaks  on an elm in Newport town centre,the joy of seeing the valezina form of the Silver-washed Fritillary in numbers at Porchfield,and finding a colony of Lesser Spotted Fritillaries on the beach on the Greek Island of Thassos. However the best must be the discovery of Glanville Fritillary pupae or chrysalies on the Island back in May.Here the habitat for this fritillary is unique as the continental Glanvilles frequent meadows,riverbanks,and woodland clearings.On the Isle of Wight it is a butterfly of our cliffs and clifftops.Therefore finding a spot to pupate can mean under stones or rocks and this is the place where these chrysalises were found.As normal they use a strand of silk to attach themselves to their chosen stone where it will take up to three weeks to emerge as an imago.
  

A New Skipper.

I have been struggling to find newly emerging species so far this year although many have been  reported in Southern England and on the Isle of Wight.So today I was pleased to see a male Large Skipper in my garden.It was happily posing for me in the flower border near to the back door and despite this overcast,humid,and thundery weather too.

Glanville Fritillary Pupae.

The first adult Glanville Fritillary butterfly of 2015 was seen on the Isle of Wight yesterday, the 4th May and hopefully during this month many more will emerge along our southern coast.

A sight that is not normally seen however is the fritillaries' pupal stage,particularly in the wild. Of course like other species of butterfly some are reared in captivity and sadly we have collectors from the mainland visiting our Glanville sites in the early spring to take caterpillars.So to discover pupae in their natural habitat is very satisfying and uncommon.

Once the full grown caterpillars have dispersed from their communal nest in April each will find a suitable place to pupate.The three pupae or chrysalises found today were attached by their pads of silk to the underside of small stones.Pupa length 13-14mm. This stage will last about three weeks.

Will They Be Back in 2015?

The recent history of the Large Tortoiseshell on the Isle of Wight is one of several sightings of individuals scattered around the Island mainly during the summer months.This has been interpreted as migrants from the continent and that is probably a correct assumption.However in 2009 at Woodhouse Copse no less than five were reported on the 19th March.All it seems were along a single woodland ride in what was then a well managed copse.Where did all these originate from?who can tell, although the time of year would indicate they had just emerged from hibernation.

The following year it seemed that this would be 'a one off' for the copse as none were seen there and sightings in general were again restricted to the odd one or two about the Island.But in 2011 the Large Tortoiseshell was back at Woodhouse with three seen on the 7th March,another two on the 22nd March,and seven more sightings of 'ones' until the 8th April.

When it seemed that the copse could be the next 'stronghold' of this iconic species,2012 proved to be a disappointment as Woodhouse Copse was sold,woodland management was abandoned, and human disturbance put an end to the chance of further sightings.As far as I am aware no sightings of the butterfly have been made there since.

Still,there are other woodlands,and at Newtown the National Trust maintain several copse,one of which is Walters Copse.This is very well managed and without a doubt my favourite haunt for all sorts of wildlife.

So it was here on 27th March 2012 that a Large Tortoiseshell was spotted taking moisture from a damp area of ground in a clearing.It was a female in excellent condition and recently out of hibernation after maybe spending the winter in or around the copse.Over the next few days many butterfly watchers visited the copse and two further sightings were made of different individuals.

Hopes were now high for a repeat performance at Walters Copse in 2013 but due to the very cold weather that lasted  into March the spring was put on hold for a while.Finally, in April it warmed up and on the 19th a rather tatty male was seen in Walters.This male proved to be very accommodating and stayed on its territory for several days allowing all to get a good view.In fact it was not the only Large Tortoiseshell in the immediate area as others were also recorded in.the copse and in the surrounding meadows.

In contrast to the previous two years,the spring of 2014 did not produce any probable sightings at Walters Copse,so we can only hope that this year the Large Tortoiseshell will return to grace our Island woodlands.