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Species Records

12 Nov 20

Priorslee Lake and The Flash

8.0°C > 10.0°C: A mixture. Cloud from overnight rain soon clearing to E and then clear for a while. Another area of cloud arrived before that too cleared to thin high overcast. Light W / SW wind. Very good visibility.

Sunrise: 07:28 GMT

* = a photo today.

Priorslee Lake: 06:02 – 09:23

(248th visit of the year)

Bird notes:
- In addition to the fly-over Goosanders a drake was seen leaving the lake at 07:30.
- Not sure where the early arriving Lesser Black-backed Gulls came from: they dropped from high overhead and I saw none overflying at that time to provide a clue. Unusually there were two immature Herring Gulls with them. Later arrivals were part of a small but steady E -> W passage with some birds stopping off for a while. The usual few gull puzzles.
- Very strange behaviour from Wood Pigeons. A larger than usual number were flying fast W early on, low-down and not in groups. Therefore they did not appear to be migrants. The just before 08:00 several large groups, one of c.130 birds, were noted heading N - yes N! In all I logged c.300. Whilst a few were still heading N several larger groups appeared flying S / SW, two of which both contained over 250 birds. All this within c.15 minutes. Only a few singles seen afterwards.
- Jackdaws very difficult to count today. They were in several concurrent scattered high-flying groups passing both to my left and right as well as overhead. Later two birds were seen, unusually, strutting around the football field.

Birds noted flying over / near here:
- 9 Canada Geese: single and octet outbound
- 10 (4♂) Goosander: 8 (2♂) S, unusually, at 07:20; 2 (2♂) W at 08:10
- 3 Cormorants: single and duo
- 26 Lesser Black-backed Gulls
- 20 Feral Pigeons: groups of 15, three & two
- c.1130 Wood Pigeons: c.1065 of these in 14 migrant parties (see also notes)
- >530 Jackdaws
- 6 Rooks
- 7 Redwings: one group
- 4 Pied Wagtails
- 2 Siskins

Birds seen leaving roosts around the lake:
- >50 Starlings: one group from N side reeds
- 5 Redwings
- 1 Reed Bunting only

Counts from the lake area:
- 2 + 5 Mute Swans
- 2 Canada Geese, for a while.
- 5 (3♂) Gadwall
- 13 (8♂) Mallard
- *3 (1♂) Pochard
- 25 (20♂) Tufted Duck
- 1 (1♂) Goosander: departed
- 2 Cormorants: arrived separately again
- 2 Grey Herons
- 3 Little Grebes
- 12 Great Crested Grebes
- 8 Moorhens
- 165 Coots
- c.200 Black-headed Gulls
- 56 Lesser Black-backed Gulls: 38 pre-sunrise: 18 more later.
- *4 Herring Gulls: all immatures
- *1 possible Yellow-legged Gull: near adult
- *1 possible Caspian Gull: second-winter

Playing fields
Not visited to view any gulls:

On / around the street lights etc. pre-sunrise:
- 4 winter gnats (Trichocera sp)
- *1 probable springtail sp., perhaps Pogonognathellus longicornis
- 1 Tetragnatha stretch spider sp.

Noted later:
Nothing

I have logged this as a duck Pochard. Looking at the photo I suspect it is a moulting immature drake. The hind flanks look to finely barred for a duck and the head looks rather too dark chestnut.

Did I have trouble with some of the gulls this morning? I did. The near adult bird on the right in real life had a mantle that was clearly paler than a Lesser Black-backed Gull and therefore a candidate Yellow-legged Gull. A very strange bill with solid dark area across the middle of both mandibles - hence my assumption that it is not a full adult.

I think this is 'just' a first-winter Herring Gull though the head seemed rather pale. I have ascribed it on the basis of the strength of the barring on the under-tail but am willing to be told otherwise.

More grey on the back indicates this is a second-winter gull. It has a rather pale head and looks suspiciously like one of the Caspian Gulls identified previously.

The same bird at the back with a paler second-winter Herring Gull in the foreground. Gull profiles can vary greatly depending on how they hold themselves but the putative Caspian looks longer necked and smaller headed.

This illustrates the challenge of accurately determining the mantle tone of gulls. The same bird turned a fraction to catch the light from a different angle and it looks paler.

And here is the same second-winter Herring Gull for comparison. Shows a stouter-looking, shorter neck.

This is frustrating. I can recall seeing something like this previously and managing some type of identification. But I have forgotten. So I had to start again. My best guess is a species of springtail. As one of the most common Pogonognathellus longicornis seems possible. It sure has a longicornis.

(Ed Wilson)

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The Flash: 09:26 – 10:33

(232nd visit of the year)

Bird notes:
- The adult pen Mute Swan with the green Darvic ring was alone on the island and likely the bird that has been sulking there for three days. I assume this was the pen reportedly taken in to care for a while. The cob was sometimes with what I believe to be his 2018 daughter (thus also a pen). He was occasionally on his own. The cygnets were all together somewhere else.
- The immature Herring Gull stayed inside the island and was difficult to age. I later saw a first-winter circling overhead which might have been the same bird.

Birds noted flying over / near The Flash:
- 1 Lesser Black-backed Gull: adult
- 5 Feral Pigeons: two singles & trio
- 8 Wood Pigeon together
- 47 Jackdaw

Counts from the water:
- 3 + 7 (1 brood) Mute Swans
- 25 Canada Geese: seven of these arrived
- 35 (20♂) Mallard
- 3 (2♂) Pochard
- 60 (?♂) Tufted Duck exactly
- 13 (>2♂) Goosanders
- 1 Grey Heron again
- 2 Great Crested Grebes as ever
- 12 Moorhens
- 42 Coots
- 63 Black-headed Gulls
- 1 Herring Gull: first-winter

On the lamp poles.
Nothing

Around the Ivy
- >30 Common Wasps (Vespula vulgaris)
- 1 drone fly sp.: seen too briefly to ID
- many 'flies'

Of interest elsewhere:
- active Honey Bees (Apis mellifera) at their nest site. I would have thought it was too cold (10°C) with only rather watery sun to tempt them out.
- 3 Grey Squirrels

(Ed Wilson)

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On this day
2018
Priorslee Lake
Today's Sightings Here

2016
Priorslee Lake
Today's Sightings Here

2015
Priorslee Lake
Today's Sightings Here

2014
Local Area
Today's Sightings Here

2013
Priorslee Lake
1 Wigeon 
7 Gadwall 
2 Teal 
59 Tufted Duck
1 Water Rail 
27 Moorhens 
239 Coots 
c.440 Wood Pigeons
8 Song Thrushes 
567 Fieldfare
26 Redwings 
270 Jackdaws
106 Rooks 
c.310 Starlings from roost
(Ed Wilson)

2012
Priorslee Lake
103 Starlings
3 Gadwall 
6 Pochard 
19 Tufted Ducks
8 Goosander
139 Coots
52 Redwings
55 Fieldfares 
571 Jackdaws
128 Rooks
(Ed Wilson)

2008
Priorslee Lake
8 Great Crested Grebes 
9 Cormorants
8 Pochard
117 Tufted Ducks 
2000+ Wood Pigeons
400+ Fieldfare
125+ Redwings
33 Starlings
10+ Siskins
(Ed Wilson)

2007
Priorslee Lake
Gadwall
Shoveler
2 Water Rails
c.50 Lapwings
c.150 Golden Plover
6 Redwings
3 Fieldfare
Chiffchaff
Several Siskins
(Ed Wilson)

2006
Priorslee Lake
65 Pochard
65 Tufted Ducks
1 eclipse drake Ruddy Duck
1 Water Rail
50 Coots
500+ Golden Plover
1 Woodcock
790+ Black-headed Gulls
1753+ Lesser Black-backed Gulls
962 Wood Pigeons
130 Fieldfare
93 Redwings
393 Jackdaws
135 Rooks
174 Starlings
34 Greenfinches
6 Reed Buntings
(Ed Wilson)

2005
Priorslee Lake
2 Little Grebe
9 Pochard
63 Tufted Duck
5 Ruddy Duck
Water Rail 
800 Black-headed Gull
Cormorant
10 Redwing
9 Reed Bunting
3 Redpoll
9 Siskin
(Martin Adlam)