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Butterfly Diary
- field notes by Adrian Hoskins
my earliest sightings
of each brood are highlighted in bold type
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Sightings policy - details
of certain sites where visitor pressure or trampling may
pose a threat to butterflies, or alienate landowners, are
excluded from these pages.
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Click on
thumbnails to see more photos, and detailed descriptions of the
distribution, habitats, lifecycle and behaviour of each
illustrated species......
2008
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Jly
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Aug
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Sep
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Oct
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Nov
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Dec
July
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Sunday
27th July
At Crab Wood this morning I recorded 2 Green-veined Whites,
1 Large White, 13 fresh Brimstones, 1 Large Skipper, 2
Speckled Woods, 1 Gatekeeper, 1 Ringlet, 28 Meadow Browns, 2
White Admirals, 1 Peacock and 37 Silver-washed Fritillaries
including a
valesina
ovipositing on an oak trunk. Later at Stockbridge Down I saw
another
valesina
nectaring at bramble on the open downland, and 2 males at
Buddleia. Other species at Stockbridge included 3 Dark Green
Fritillaries, 5 Peacocks, 1 Red Admiral, 1 Comma, 1 worn
Painted Lady, 18 Small / Essex Skippers, 6 Green-veined
Whites, 1 Large White, 2 Small Whites, 15 Brimstones, 2
Speckled Woods, 35 Gatekeepers, 150+ Meadow Browns, 3 Small
Coppers, 2 Common Blues and an estimated 800-1000 Chalkhill
Blues.
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Saturday
26th July
A couple of hours spent on Ramsdean Down this afternoon
provided further evidence that populations of our summer
butterflies are at an all-time low. Despite warm and bright
conditions the only species seen were
20 Common Blues, 3 Small Coppers,
2 Dark Green Fritillaries, 1 Peacock, 20 Small Heaths, 10
Marbled Whites, 60 Meadow Browns,
1 Large White, 2 Small Whites, and
about 30 Small Skippers.
Reports coming in from
other observers indicate that Silver-spotted Skippers and
Brown Hairstreaks are just beginning to emerge in East
Sussex, and Wood Whites in Surrey. Most observers are agreed
that most of the July species have suffered a major decline
this year, a consequence of the atrocious weather conditions
during last year's breeding season. One of the worst
affected species is the Small Tortoiseshell, which is
causing great concern, with many recorders having failed to
see even a single specimen this summer. The Large
Tortoiseshell however, which only a few years ago was
presumed extinct in the UK, is showing signs of making a
comeback, with several reports of presumed migrants reported
from sites along the south coast.
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Thursday
24th July
Despite perfect weather conditions butterflies were in well
below average numbers at Ballard Down in Dorset today,
although diversity was reasonably high with 27 species
recorded - 9 Lulworth Skippers, 1 Small Skipper, 2 Essex
Skippers, 3 Large Skippers, 4 fresh Dingy Skippers,
1 Clouded Yellow, 1 Large White, 5 Small Whites, 2
Green-veined Whites, 7 Small Coppers, 30+ Common Blues, 1
Holly Blue, 7 Chalkhill Blues, 3 fresh male Adonis Blues,
15 Brown Argus, 3 Red Admirals, 8 Commas, 3 worn Dark
Green Fritillaries, 4 immaculate Peacocks, 12
Speckled Woods, 2 fresh Small Heaths, 1 fresh
Grayling, 60+ Gatekeepers, 50+ Marbled Whites, 2 Wall
Browns ( ovipositing ) and about 150 Meadow Browns. The
biggest surprise however was the presence of 2 Silver-washed
Fritillaries ( 1m, 1f ) a species not previously recorded at
this site.
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Sunday
20th July
I decided today to concentrate on photographing some of the
commoner species, so late this morning I visited Noar Hill,
a very flowery chalk grassland site which normally supports
huge populations of Meadow Browns, Gatekeepers, Marbled
Whites and usually excellent for summer Nymphalidae such as
Red Admiral, Peacock, Painted Lady and Comma. Weather
conditions were quite reasonable, but butterflies very
scarce, possibly the worst I've ever known at this site.
My total count for the morning was just 60 Meadow Browns, 15
Ringlets, 8 Gatekeepers, 3 Small Heaths, 15 Marbled Whites,
3 Large Whites, 1 Red Admiral, 3 Commas
and about 40 Small / Essex Skippers.
Afterwards I visited Stockbridge Down where despite cooler
and overcast conditions butterflies were more profuse,
though by no means abundant. Species seen included 2
Brimstones, 2 Small Whites, 12 Green-veined Whites, 4
Commas, 7 worn Dark Green Fritillaries, 2 worn Silver-washed
Fritillaries, 30 Marbled Whites, 30 Gatekeepers, 180+ Meadow
Browns, about 120 fresh male Chalkhill Blues, and 9
Small Coppers including a female ovipositing on
sheep's sorrel at the edge of a rabbit scrape.
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Saturday
19th July
My opportunities to visit butterfly sites in the last few
days have been very limited, but reports coming in from
other observers indicate that Chalkhill Blues, Graylings,
Peacocks and Brimstones are flying at several sites in
southern England, and that Scotch Argus has begun to emerge
in Cumbria.
At home in my rather unkempt garden in Havant I saw 2 Red
Admirals ovipositing today on a small patch of nettles. Each
laid about a dozen eggs between about 11.00am and 1.00pm.
The eggs were all laid singly on the upperside of terminal
nettle leaves. The egg-laying bouts, which each lasted about
2-3 minutes were interspersed with periods of basking, and
occasional flights to nectar at a
Buddleia
bush a few metres away. Interestingly a Comma was
ovipositing simultaneously on the same nettle patch, and
neither species seemed disturbed by the presence of the
other. Also in the garden were a few Gatekeepers, Meadow
Browns and Speckled Woods, plus the occasional Holly Blue
and Small White, visiting bramble blossom and Buddleia.
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Saturday
12th July
After the heavy rains this week, it was hardly surprising to
find that butterflies were in poor numbers this morning at
Stansted Forest. During a 45 minute walk I managed to see 30
Gatekeepers, mostly males, plus about 30 Meadow
Browns, 40 Ringlets, 4 Marbled Whites and a few Small
Skippers. In the afternoon I visited Martin Down. A strong
breeze and overcast conditions reduced butterfly activity
but during sunny spells the Dark Green Fritillaries
became very active. I saw about 40 individuals, mostly worn
males, although there were also at least 8 freshly emerged
females. Other species at Martin Down included about 60
Meadow Browns, 30 Marbled Whites, 2 Gatekeepers, 5 Ringlets,
about 80 Small Skippers, a few fresh Essex Skippers
and 1 Small White.
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Friday
4th July
I was very
fortunate to have several sightings of Purple Emperor
at Alice Holt forest this morning - at one stage I had 3
males and 1 female in sight simultaneously. On 2 occasions
different males flew down and settled on the path,
displaying their purple sheen in all it's glory. The first
male appeared at about 09.45am and settled to feed on a fox
scat for a few moments before returning to perch high up in
an oak tree. The other individual came down several times
during the course of the morning, and was last seen at about
12.30pm. One, or possibly 2 females were seen in flight, one
of which settled at the top of a sallow tree where it
remained for about an hour. Other species seen included 50
Ringlets, 50 Meadow Browns, 2 Purple Hairstreaks, 1 fresh
Green-veined White, 2 Speckled Woods, 5 White Admirals,
2 Red Admirals, 3 Commas, 30 Large Skippers and about 25
Silver-washed Fritillaries. Most of the latter were males,
but there were at least 6 females, including the aberrant
form
confluens.
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Thursday 3rd July
This afternoon
I visited a woodland reserve in Wiltshire where
Silver-washed Fritillaries were abundant until 3 or 4 years
ago. Unfortunately numbers have dropped considerably, and I
only managed to see about 20 today, including 2 mating
pairs. White Admirals were also well down in numbers, with
only 3 seen. The small population of White-letter
Hairstreaks seems however to be stable, with sightings
of 3 adults flying around the top of a wych elm in the
centre of the wood. Other species seen included 2 Marbled
Whites, 50+ Meadow Browns, 80+ Ringlets and about 20 Large
Skippers.
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Wednesday 2nd July
During a walk
around Whiteley Pastures between 7.00 - 7.30pm, I counted
173 Purple Hairstreaks in flight around the tops of
oak trees. The mature broad-crowned oaks produced the
highest counts, with between 8 - 12 seen in flight above
each tree, while the smaller and more spindly trees
typically hosted at least 3 or 4 specimens. These figures
represent butterflies seen in flight, and it can be safely
assumed that for each specimen in flight there must have
been another 3 or 4 at rest which escaped detection. During
the limited time available I was only able to look at about
0·5% of the oaks in the wood ( i.e. those along a half-mile
stretch of one particular track ). If my mathematics are
correct this means the total population of Purple
Hairstreaks at Whiteley Pastures today was possibly in
excess of 103,800 butterflies ( multiply 173 x 3 to get an
estimate of butterflies along the section of track that I
visited, and multiply that figure by 200 to include the
total number of oaks in the wood ).
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Text and photographs protected by Copyright © Adrian
Hoskins 2007-2008, and must not be reproduced or published in part
or in whole elsewhere in any form without written permission from
Adrian Hoskins. Breach of copyright will be pursued by litigation.
Website designed, produced and owned by
Adrian Hoskins
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