27 Oct 19

Priorslee Lake and The Flash

Priorslee Lake:  05:40 –08:45
The Flash:  08:50 – 09:45

5.0°C > 7.0°C:  Cloudless. Touch of frost in areas sheltered from light / moderate WNW wind. Very good visibility.

Sunrise: 06:56 GMT

Priorslee Lake:  05:40 –08:45

(254th visit of the year)

Two highlights this morning
- A party of 11 Golden Plover flew N overhead at 08:30. So often these are only seen as flocks over distant fields to the E. New for me here this year – bird species #98 at the lake.
- Two Blackcaps seen along the S side: one a juvenile / female; the head of the other not properly seen.

Other bird notes from today:
- Only three of the cygnets took part in the flying lesson this morning with all three just about getting airborne.
- A drake Pochard back.
- Two Little Grebes at the W end a two additional birds confirmed in the NE area – all four visible at once.
- Of the 12 Great Crested Grebes there are 2 + 2 from the NW family; 2 + 4 from the NE family. The other two are (near) adults.
- c.45 of the Black-headed Gulls passed directly over to the E at first light.
- c.20 Wood Pigeons left trees around the lake c.06:55 and seemed to be heading S ‘with a will’ as if off on migration. No migrant parties seen overhead until 07:45 when three groups totalling 102 birds flew S and W in quick succession. No more until 08:40 when a big group of 180 flew S, followed a few minutes later by 10 more. No further sightings here (or later at The Flash)
- Again 17 Reed Buntings logged leaving their roost. Always harder when the wind is in the W: birds usually take off in to the wind and these are then initially flying against the backdrop of trees.

Bird totals:

Birds noted flying over or flying near the lake:
- 11 Golden Plover
- c.45 Black-headed Gulls
- 28 Lesser Black-backed Gulls: mainly adults
- 9 unidentified large gulls
- 406 Wood Pigeons: 392 of these in 5 migrant groups heading ‘S’ / ‘W’
- 267 Jackdaws
- 5 Skylarks
- 21 Starlings (3 groups)
- 4 Redwings (singles)
- 5 Pied Wagtails again

Warblers noted:
- 2 Blackcaps

Birds logged leaving roosts around the lake:
- >300 Starlings
- 2 Song Thrushes
- 7 Redwings
- 17 Reed Bunting again

Counts from the lake area:
- 2 + 5 (1 brood) Mute Swans
- 5 (3♂) Gadwall
- 5 (3♂) Mallard also
- 1 (1♂) Pochard
- 29 (?♂) Tufted Ducks
- 2 Cormorants
- 2 Grey Herons
- 4 Little Grebes
- 12 Great Crested Grebes
- 10 Moorhens
- 123 Coots
- c.100 Black-headed Gulls
- 13 Lesser Black-backed Gulls
- 3 Herring Gulls: no adults noted
- 14 unidentified large gulls

Busy again on the lamp poles pre-dawn despite the frost:
- 3 November Moth-types (Epirrita sp.)
- 1 presumed Chironomus plumosus (plumed midge)
- 2 male Tipula pagana craneflies
- 1 unidentified small fly sp.
- 1 Hawthorn Shieldbug (Acanthosoma haemorrhoidale)
- 1 probable Nursery Web Spider (Pisaura mirabilis)
- 3 other unidentified spiders, all different species
- 1 Paroligolophus agrestis harvestman

Later sightings elsewhere
- 1 male Tipula pagana cranefly

Some high cloud to provide a touch of colour at sunrise.

A good trick if you can do it: stand one-legged on the water.

“I’d give my right leg to ambidextrous”

Perhaps it is auditioning for a well-known TV programme. In reality of course one of the cygnets having a test-flight.

Now: are the (invisible) Coots taking cover from the passing Grey Heron? Or ...

... just having a typical Coot scrap?

Woops: Slight correction if I am going to make that buoy. A first-winter Lesser Black-backed Gull sorts itself out. Just the merest hint of pale on the inner webs of the inner primaries.

On a first winter Herring Gull the whole of the inner primaries are much paler.

And on this different individual.

Count that lot then! Most of a migrant party of Wood Pigeons. Always pays to look hard and see whether anything else is with them. Stock Doves and Feral Pigeons are not infrequent. Last year there was a Snipe!

Does not help me identify it: here is my best photo to date of the small red-eyed flies that are often on the lamp poles in the dark. Never notice them in the day-time.

I thought this was ‘just’ a Chironomus plumosus (plumed midge), though rather suspicious about the brown thorax which I had not noticed on that species previously. The camera reveals that the ‘plumes’ are quite different. I think it is the mosquito Culex pipiens. I was pleased to read that “it rarely bites man”. We can see the ‘probe’ in the middle with two pairs of plumed antennae.

(Ed Wilson)

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The Flash:  08:50 – 09:45

(240th visit of the year)

Notes from here:
- Hard to census the Mallard today. Several different food-drops meant they were always on the move.
- Goosanders being typically elusive – always ‘at the other end’.

Bird noted flying over / near The Flash:
- 3 Lesser Black-backed Gulls
- 6 Jackdaws
- 2 Chaffinches
- 1 Siskin

Counts from the water:
- 3 Mute Swans
- 16 Greylag Geese: arrived
- 14 Canada Geese
- 24 (15♂) Mallard
- 27 (?♂) Tufted Duck
- 11 (1♂) Goosanders
- 2 Great Crested Grebes
- 2 Moorhens again
- 15 Coots
- 15 Black-headed Gulls
- 1 Kingfisher

Other things:
- on the usual lamp pole
        - 1 Dicranopalpus ramosus harvestman
- on lamps in squirrel alley
- 1 November Moth-type (Epirrita sp.)
- elsewhere on lamp poles
- 1 November Moth-type (Epirrita sp.)
- on the bank of Ivy
        - 1 Red Admiral butterfly (Vanessa atalanta)
        - 1 7 Spot Ladybird (Coccinella 7-punctata)
        - >30 wasps, some rather small-looking
        - very many flies
        - (no hoverflies)
and
        - >8 Shaggy Inkcap or Lawyer's Wig (Coprinus comatus) fungus at top of squirrel alley. These ‘on cue’ – previous years’ sightings on 25 October and 01 November.

A duck Mallard with wings wide spread and displaying the white-bordered speculum running the full-width of the secondaries. Whether the speculum is blue or green depends upon the angle of the light. Note the bill pattern: a predominantly dark bill with brown edges and brown also ‘over the nose’.

Most of the Goosanders around at the moment are ‘brownheads’ – ducks, and immatures. This rather scruffy drake is acquiring its soon-to-be splendid breeding plumage.

And here is a ‘brownhead’. Some fieldguides give detailed descriptions on how to separate immatures of each sex and ducks but I rarely feel confident about any specific identification in winter. Many individuals seem to have rather mixed characteristics.

The sun is out, the Ivy is sheltered from the wind and sunning itself was this Red Admiral butterfly (Vanessa atalanta).

Not sure what this 7 Spot Ladybird (Coccinella 7-punctata) is doing in the Ivy flower. I am sure they do not feed on the nectar.

Aaargh! A close-up of the underside of a Garden Spider (Arameus diadematus). The last view that many a victim would see.

A Shaggy Inkcap or Lawyer's Wig fungus (Coprinus comatus) at top of squirrel alley. Annual here.

(Ed Wilson)

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On this day..........
2016
Priorslee Lake
Today's Sightings Here

2015
Priorslee Lake
Today's Sightings Here

2011
Priorslee Lake
1 Adult Great Black-backed Gull
1000+ large gulls
(John Isherwood)

2010
Priorslee Lake
Great Black-backed Gull
11 Golden Plover
2 Kingfishers
16 Reed Buntings
5 Sky Larks
8 Meadow Pipits
71 Redwings
457 Fieldfare
31 Siskins
1 Linnet
4 Redpolls 
(Ed Wilson)

2005
Priorslee Lake
40 Tufted Duck
16 Pochard
2 Ruddy Duck
Common Buzzard
Sparrowhawk
c.2500 Lesser Black-backed Gulls
1 Kingfisher
2 Goldcrest
42 Fieldfare
Willow Tit
14 Long-tailed Tits
(Martin Adlam)