29 Aug 19

Priorslee Lake and The Flash.

Priorslee Lake:  05:00 – 06:45 // 07:35 – 09:35
The Flash:  06:50 – 07:30

9.0°C > 15.0°C:  A few patches of high cloud early. Mist over the water. Later more cloud, only some of it low from the lifted mist. Calm start with light SE wind later. Very good visibility away from mist patches.

Sunrise: 06:14 BST

Priorslee Lake:  05:00 – 06:45 // 07:35 – 09:35

(210th visit of the year)

Bird notes from today:
- More geese every day. Presumably the same birds are being seen inbound as logged outbound earlier. Strange that so far this Autumn Greylag Geese have far outnumbered the normally abundant Canada Geese. And where are they roosting anyway?
- Two duck Tufted Duck seen 07:50 but not noted earlier or later.
- I was mistaken yesterday: neither pair of Great Crested Grebes had lost any of their three juveniles. There was yet another pair of adults present today.
- The Common Kestrel was again hovering over the fields to the E. At 06:05.
- The small red-headed juvenile Coot seen again.
- What was presumably the same pigeon as seen on Tuesday was again on the roof of the academy at 09:20. It has rings on both legs so I assume it is a lost Racing Pigeon.
- At least 130 Wood Pigeons put up from fields to the E. All circled back to the same general area with none appearing over the lake at that time.
- A single late Swift seen overhead with House Martins at 08:55. One a few minutes later was presumably the same bird staying in the same general area.
- The first House Martins were six over at 06:20: these seemed to move away S and no more noted until c.08:15 when, eventually, c.30 were over trees mainly along the N side.
- Exactly 40 Pied Wagtails on the ‘football’ field at 06:35. These part of an unusually busy field with 49 Black-headed Gulls and 22 Starlings, though there were only five Wood Pigeons and just three Magpies at that time. Pied Wagtails in some number whenever I looked with 21 present at 09:15. Always some of the same birds?
- A Lesser Redpoll over at 06:30 was on an early date for this species here.

Bird totals:

Birds noted flying over or flying near the lake:
- 298 Greylag Geese (148 outbound in 9 groups; 150 inbound in 11 groups)
- 16 Canada Geese (16 outbound in two groups; pair inbound)
- 2 Sparrowhawks again
- 1 Common Buzzard again
- 1 Common Kestrel again
- 18 Black-headed Gulls
- 46 Lesser Black-backed Gulls
- 2 Stock Doves again
- 72 Wood Pigeons
- 5 Jackdaws
- 2 Rooks
- 1 Lesser Redpoll

Hirundines etc. noted:
- 1 Swift
- 3 Barn Swallows
- >30 House Martins

Warblers noted (singing birds):
- 13 (3) Chiffchaffs
- 2 (0) Blackcaps

Counts from the lake area:
- 2 + 6 (1 brood) Mute Swans
- 15 (8♂) Mallard
- 2 (0♂) Tufted Ducks
- 1 Grey Heron
- no Little Grebes
- 9 + 12 (>2 broods) Great Crested Grebes
- 4 + 4 (3 broods) Moorhens
- 81 + 2 (2 recent broods) Coots again
- 49 Black-headed Gulls: just 1 of these a juvenile / first-winters
- 1 Lesser Black-backed Gull
- 1 Kingfisher yet again

On the lamp poles pre-dawn:
a chilly night with a very heavy dew
- 1 unidentifiable small micro-moth (covered in dew)
- 1 unidentifiable spider (also covered in dew)
- 3 Dicranopalpus ramosus harvestmen

The following logged later:
Clouded before many insects appeared:
- Butterflies:
- Red Admiral (Vanessa atalanta)
- Hoverflies:
- Drone-fly (Eristalis sp.)
- possible Leucozona lucorum
And other things:
- very many Mystacides longicornis (caddis flies)

Well before sunrise the sliver moon was just visible. Indeed the outline of whole disc was just about discernible in the ‘earth shine’.

The long-view at about the same time with mist over the lake.

Later the sunrise coloured up, still with mist.

The intensity of the colour fading as light spreads across the sky.

Here, just as the sun was about to rise, with a few dead contrails from airliners arriving in to Europe from the US.

One of the many flights of Greylag Geese outbound.

The newest brood of Great Crested Grebes. One of the adults brings a small morsel to the trio of juveniles riding on the other parent’s back. Here we can just see part of one striped head getting ready to take the food.

Early cross-lighting on a small group of Starlings. The front bird is a juvenile moulting in to adult plumage. Note the head is all brown with a small dark ‘mask’ in front of the eye. Until they start getting the spotting on the body the juveniles look most odd. The bird behind looks more like an adult though the head seems rather scruffy and it too may be a juvenile with its moult further advanced. Equally it could be an adult undertaking its annual moult. There is another juvenile in the middle distance.

This female hoverfly (eyes well-separated) remains a bit of a puzzle. It has a white band (not showing too clearly from this angle) rather like the Pellucid Fly (Volucella pellucens). However it struck me as rather small and different-looking with a narrower white area. It may be a Leucozona lucorum though that species is rarely encountered in August. The wing markings certainly more closely fit lucorum.

In the foreground is a single blade of a sedge sp. Dancing around are the small caddis flies Mystacides longicornis. The resolution is not quite good-enough to show their long antennae which gives them their scientific name. These caddis flies rarely settle and photos of the long antennae are usually only possible if one is unfortunate enough to get caught in a spider’s web.

(Ed Wilson)

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The Flash:  06:50 – 07:30

(201st visit of the year)

Notes from here:
- One of the Great Crested Grebe juveniles not located.
- The seven House Martins seemed to fly straight through W as if perhaps migrating.

Birds noted flying over / near The Flash:
- 1 Feral Pigeon
- 11 Wood Pigeons
- 1 Jackdaw
- 2 Starlings

Hirundines etc. noted:
- 7 House Martins

Warblers noted (singing birds):
- 4 (1) Chiffchaffs
- 1 (0) Blackcap

Counts from the water:
- 3 Mute Swans as usual
- 3 Canada Geese again
- 29 (17♂) + 1 (1 brood) Mallard
- 22 (5♂) Tufted Ducks
- 1 Grey Heron still
- 2 + 1 (1 brood) Great Crested Grebes
- 1 Moorhens
- 20 Coots
- 3 Black-headed Gulls: 1 of these a juvenile / 1st winter

The only surviving Mallard duckling from the very late brood, here with Mum. 

(Ed Wilson)

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Between the lake and The Flash:

- Moorhen(s) heard at the lower pool.
- single Blackcaps heard calling beside both upper and lower pools.
and
- 1 Common Grass-veneer moth (Agriphila tristella) on one of the lamp poles.

(Ed Wilson)

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On this day..........
2018
Priorslee Lake
Today's Report Here

2017
Priorslee Lake
Today's News Here

2016
Priorslee Lake
Today's News Here

2013
Priorslee Lake
Whinchat
(John Isherwood)

2011
Nedge Hill
Peregrine
(John Isherwood)