12 Jan 25

Priorslee Balancing Lake

1.0°C > 2.0°C: Clear but hazy start again with mist once more making its presence felt. Almost calm. Moderate visibility, becoming poor.

[Sunrise: 08:17 GMT]

Another morning only at the lake.

* = a species photographed today

Priorslee Balancing Lake: 09:05 – 10:30

(10th visit of the year)

Slightly less ice with the open water extending in to some of the reeds in which some birds were able to hide.

Bird notes:
- a duck Shoveler apparently new in though in the misty conditions not easy to separate from duck Gadwall at a distance and it could have been present previously.
- a Water Rail seen today in the north-east area. Is just one bird exploiting the whole of the North side or are there two?
- yesterday's Little Grebe not re-found.
- two Great Crested Grebes today, neither with significant head plumes.
- at the time I was present there were, unusually, more Herring Gulls than Lesser Black-backed Gulls.
- five Fieldfare flew out of trees alongside Castle Farm Way.

Bird(s) noted flying over here:
- 4 Herring Gulls
- 38 Lesser Black-backed Gulls
- 5 Jackdaws
- 4 Siskins

Counts from the lake area:
- 2 Mute Swans
- *1 (0♂) Shoveler
- 7 (3♂) Gadwall
- 12 (7♂) Mallard
- 2 (1♂) Pochard
- 47 (29♂) Tufted Duck
- *1 Water Rail
- 5 Moorhens
- *262 Coots
- 2 Great Crested Grebes
- 64 Black-headed Gulls
-* 2 Great Black-backed Gulls
- *43 Herring Gulls
- 1 Yellow-legged Gull
- *27 Lesser Black-backed Gulls
- 1 Grey Heron

Noted elsewhere:

Moths:
- *1 Early Moth Theria primaria

Beetles:
- 1 Orange Ladybird Halyzia sedecimguttata: still here from 2024

Spiders:
- *1 Long-jawed Orb-web Spider Tetragnatha sp.
All these on street lamp poles.

New Bird Species
Additions to the bird species on my site list for here in 2025:
54 Shoveler
55 Fieldfare
It is depressing to realise that I have almost certainly recorded over half the number of bird species I am likely to log here this year. So the next 250 or so visits will be a bit of a slog!

A very distinctive bill. A duck Shoveler.

I was pleased to get any photo of this: a flying Water Rail. Note the long slightly-de-curved bill on this species, otherwise like a small, slim-bodied Moorhen (without the red shield) that usually stays well-hidden.

When (if!) seen well is browner-toned than a Moorhen.

A Coot skipping with joy across the ice. The outer part of the wing is surprisingly pale / translucent when seen from below.

I am not sure whether it is my eyes or the camera's rendering of colour. On the left front is an adult Herring Gull that clearly has pink legs – as it should. The adult Lesser Black-backed Gull, right front, should have yellow legs, less bright in the winter. I can make out that they are are not pink but... That leaves the middle front bird and I have no idea what colour its legs are - grey? It is an adult Herring Gull with pink feet but those legs...? Just right of centre at the back is an adult Great Black-backed Gull.

The Great Black-back is more in the open here among just one Lesser with the rest all Herring Gulls.

And here is another adult Great Black-backed Gull (on the right) to compare with an adult Lesser Black-backed Gull. During this cold snap I have seen many more Greaters than I would expect to see these days. Like all gulls numbers are in decline and now the Granville Tip is long-closed there are many fewer gulls visiting.

A Greater departing. No hint of pale in the inner primaries with the black almost concolorous across all but the very wing tip. The outer two primaries are white-tipped from above and below and show no 'mirrors' (white surrounded by black) as shown by all other large gull species. The flight is usually obviously ponderous.

Yes well: three of the five Fieldfare that flew out of trees alongside Castle Farm Way. The identification feature here is their grey rump.

My first moth of the year and appropriately an Early Moth Theria primaria. Separate from Winter Moth by the less-rounded wings and the dark spot in each forewing.

Another first for the year: what is often called a stretch spider it is one of the Long-jawed Orb-web Spiders Tetragnatha sp. In this view the two rows each with four eyes are apparent.

(Ed Wilson)

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2014
Priorslee Lake
1 drake Scaup
2 female Scaup
(Mike Stokes)