29 Aug 18

Priorslee Lake and The Flash

Priorslee Lake: 05:25 – 07:00 // 07:55 – 09:35
The Flash: 07:05 – 07:50

12°C > 15°C: Cloudy with very few breaks. Cleared to high cloud only after 08:00. Then clouded again after 09:00. Light W wind. Very good visibility

Sunrise: 06:14 BST

Priorslee Lake: 05:25 – 07:00 // 07:55 – 09:35

(107th visit of the year)

Bird notes:
- unusually the two Grey Herons were content to occupy adjacent sailing club launch platforms – they are normally very territorial. One was a juvenile so perhaps the other was a tolerant parent
- Black-headed Gulls in typical small numbers early. By the time I returned from The Flash there I counted 196, some of which were leaving to the fields to the E. Some 20 minutes later a big influx back from the fields (along with a Lesser Black-backed Gulls) saw at least 250 on the lake. They flew off and back several more times. Each time a few Lesser Black-backs came in – these were obviously different birds so perhaps some of the Black-headed Gulls wee also different. Largest count of the season so far
- c.30 House Martins seen high over the estate at 07:00 again. Then 26 were seen high to the N at 08:45, apparently heading SE. Very few over the estate later

Bird totals

Birds noted flying over or flying near the lake:
- 3 Greylag Geese [1 (with Canadas) outbound; 2 inbound]
- 32 Canada Geese [32 (4 groups) outbound only]
- 38 Black-headed Gulls
- 4 Lesser Black-backed Gulls
- 1 Feral Pigeon
- 2 Stock Doves (singles)
- 67 Wood Pigeons
- 11 Jackdaws
- 2 Carrion Crows
- 4 Starlings (single; trio)

Hirundines etc. noted
- >30 House Martins again

Warblers noted:
- 7 (1) Chiffchaffs
- 4 Blackcaps
- 1 (1) Reed Warbler

The counts from the lake area
- 2 + 3 (1 brood) Mute Swans as usual
- 15 (?♂) Mallards
- 2 Grey Herons
- 4 + 4 (2 broods) Great Crested Grebes again
- 7 + 8 (? broods) Moorhens
- 89 (near) adult + 8 dependent juvenile Coots again
- >250 Black-headed Gulls (see notes)
- 6 Lesser Black-backed Gulls

And other notes
several wasps around the lamps as I searched for the moths. Later yet another unprovoked attack and sting from one on the dam
- butterflies
- 2 Small White
- 2 Speckled Wood
- moths on the lamps
- 3 Agriphila tristella (Common Grass-veneer)
- no moths identified elsewhere
- no damselflies / dragonflies
- hoverflies
- 2 Episyrphus balteatus (Marmalade hoverfly)
- 2 Syrphus ribesii
- flies etc. identified
- many wasps again
- beetles or bugs noted
- 1 Dock Bug (Coreus marginatus)
- no spiders seen
- snails etc
>10 White-lipped Snails (Cepaea hortensis). Must have rained recently!
- no different plants noted
- mammals seen
- 2 Grey Squirrels

This Common Buzzard, carrying food, was being given a hard time by a Carrion Crow.

And here it is calling while being chased but what I assume is one of its off-spring. At this range, and hence magnification, we cannot really identify the prey.

Just a few of this morning’s large (>250) party of Black-headed Gulls.

Joined here by three (one adult and 2 1st year) Lesser Black-backed Gulls.

This is an adult Lesser Black-backed Gulls in moult. We see a few missing inner primaries: also some missing upperwing coverts that allow us to see the bases of some of the secondaries as white streaks.

A Small White butterfly from underneath. Lacks the ‘lines’ of Green-veined White and too small for Large White. On Large White the marks on the wing tip would be darker (though this can wear) and be more extensive.

And the top-side view of a different specimen.

This is a squash bug species: more elongated than shield bugs. This is a Dock Bug (Coreus marginatus).

(Ed Wilson)

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The Flash: 07:05 – 07:50

(88th visit of the year)

Notes
- Cormorants overhead was unusual
- the independent juvenile Great Crested Grebes are rather elusive at times
and
- 2 Grey Squirrels

Birds noted flying over or near to The Flash
- 3 Cormorants
- 5 Feral Pigeons (1 group)
- 6 Wood Pigeons
- 1 Starling

Hirundines etc. noted
- 2 House Martins

Warblers noted
None

The counts from the water
- 2 + 3 Mute Swans as usual
- 1 Greylag x Canada Goose: arrived
- 19 Canada Geese: 11 left; then 8 arrived
- 24 (15♂) + 14 (2 broods) Mallard
- 8 Tufted Ducks again
- 1 + 2 (1 brood) Great Crested Grebes only
- 2 + 3 (3 broods) Moorhens
- 15 + 2 dependent juvenile Coots
- 44 (5 juveniles) Black-headed Gulls

A proud mother Mallard with 7 of her brood, now almost grown (the 8th was lurking out of view).

Of interest between the lake and The Flash
- 1 male Blackcap calling around the upper pool and visiting local gardens

(Ed Wilson)

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On this day..........
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)