THURSDAY 22 AUGUST
At around 2200 hours last night, a band of
rain reached the Chilterns and continued through the night until around 0700
hours this morning. It then remained cloudy but warm, a light SSE breeze
gradually setting in. At times with the sun out, temperatures climbed to a very
sultry 24 degrees C.
With such conditions overnight, I expected a
considerable arrival of birds - especially those migrating down from further
north in Britain. It turned out that there was not that much - but enough to
make for a very enjoyable day.
I started the day at SHARDELOES LAKE, where
the cricket pitch still held 14 Pied Wagtails and 2 juvenile Grey Wagtails. The
first of 4 different Wrens was heard singing and as I reached the lake, the 2
COMMON KINGFISHERS were still noisily surveying the sluice. The lake held 92
Coot, Grey Heron, Sinensis Cormorant, 3 Gadwall and 2 adult Great
Crested Grebes, the latter missing any of their three young. Little Grebes had
seemingly had a good season with no less than 7 juveniles on show, from four
separate pairs. A female Tufted Duck accompanied 7 well grown ducklings whilst
most unexpected were 2 sleeping eclipsed-plumaged NORTHERN SHOVELERS. An adult
Lesser Black-backed Gull resting on a post in front of the island was bearing a
Yellow ring inscribed ''H-851'' - hopefully I will get a trace on it later. A
Common Treecreeper was the only other species noted.
For images see my Birding Amersham blog
WILSTONE RESERVOIR is at last dropping in
depth with the margins revealing more and more vegetation each day. As a result,
there are now large numbers of waterfowl taking advantage. I did a full
inventory -:
Great Crested Grebe: just 6 present but with
one pair successfully raising 2 stripy young (see image).
Little Egret: at least 7 birds
Grey Heron: 4
Mute Swan: 42 counted
Eurasian Wigeon: single eclipse
drake
Common Teal: an impressive 56
Shoveler: at least 26
Tufted Duck: 127 including a raft of
120
Northern Pochard: 10
Red-crested Pochard: single
female
Coot: 555 including 535 dredging weed up
from near the Drayton Bank Hide
Moorhen: 33
Lapwing: 96
Common Tern: 22
Migrants were few and far - just 35 House
Martins flying through in one group
A Chinese Water Deer was feeding on the
emergent vegetation
STARTOP'S END RESERVOIR proved far more
exciting with pride of place going to a juvenile PIED FLYCATCHER moving back and
forth along the west bank of the reservoir. It was favouring this tallest tree
in the hedgerow and kept between the two orange safety rings. It was loosely
associating with a family party of 5 SPOTTED FLYCATCHERS - a different party to
at least 4 in Marsworth Wood - but was typically elusive and often favouring the
sunnier farm side of the hedge from where to flycatch. It was present until at
least late morning.
The Pied Flycatcher was so energetic and rapid that I was just not able to photograph it - just missed it here by a fraction of a second
This juvenile Spotted Flycatcher did remain long enough for a shot
Another highlight was the finding of 3
EGYPTIAN GEESE on the mud of the SW shoreline - the first record at the
reservoirs this year. They were roosting - taking it in turn to snooze (see
images). The same stretch of mud also held two juvenile BLACK-TAILED GODWITS -
these two birds being earlier present on Wilstone in front of the
hide.
Other species noted included 4 Great Crested
Grebes (pair now with small young), the eclipse drake Red-crested Pochard, 123
Coot, 2 Mute Swans and COMMON KINGFISHER.
I expected IVINGHOE BEACON to have some
migrants but other than 25 Barn Swallows and 2 Blackcaps, there was nothing. As
usual, the post-breeding flock of Goldfinch and Linnet was in scrub just SSE of
the trig point - the former numbering at least 370. The recently ploughed field
below the main car park held 64 Lesser Black-backed Gulls.
Looking down across the valley from the top ridge and an abundance of Goldfinches - juvenile galore
It was now time to check COLLEGE LAKE BBOWT
and after liasing with volunteer warden Paul Reed, eventually located the 2
WHINCHATS which were inhabiting the isolated brambles and other bushes in the NW
corner of the reserve, just north of the perimeter wire fence. This area also
held 2 LESSER WHITETHROATS and a few Common Whitethroats, with 7 Common
Chiffchaffs on that western flank of the reserve. I also connected with a male
Bullfinch, whilst the second brood of Common Blue butterflies was particularly
abundant with at least 70 being counted. A couple of COMMON RAVENS cronked
overhead.
The first of two Whinchats....
.......and the second
......a migrant Common Whitethroat
....and a cronking Raven overhead
The juvenile RUFF was still present on the
marsh but proving very elusive, with 4 Mute Swan and 3 COMMON SNIPE also of
note. Tufted Ducks have had an excellent year with broods today of 11, 7, 1, 5
and 6 being counted from by the centre. Up to 35 Barn Swallows flew through to
the south.
In amongst the 29 Lesser Black-backed Gulls
on the Deep Pit were a single 4th-winter Argenteus Herring Gull and
near-adult YELLOW-LEGGED GULL (both photographed), whilst 4 drake Northern
Pochard there were a surprise. No less than 7 juvenile Common Terns was still
present on the raft. Atlantic Canada Geese numbered 34.
The Herring Gull washing and bathing and preening
Yellow-legged Gull standing tall on the island before taking off
Northern Pochards are unusual here in August - these four drakes being post-breeders freshly arrived from Eastern Europe
The rare Dexter breed of cattle on the reserve
and a confiding Robin
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