11 Jul 25

Priorslee Balancing Lake and The Flash

16.0°C > 21.0°C: A few wisps of high cloud otherwise wall-to-wall sun. Very light wind. Very good visibility.

Sunrise: 05:00 BST

Photographs later
$ = my first sighting of the species for this year
$$ = my first ever recorded sighting of the species in the area

A short report today with once around the Balancing Lake and once around The Flash not stopping for much en route. Some photos later – maybe.

Priorslee Balancing Lake: 05:00 – 06:15

(169th visit of the year)

Bird notes
From a single walk around:
- all the Canada Geese now gone.
- just three groups of Mallard ducklings seen: a single; a group of four; and another of seven.
- a single Swift again.
- the Cetti's Warbler was only heard calling.
- no Garden Warblers or Common Whitethroats seen or heard.
- 33 Starlings were on the academy's own playing field at 05:55

Bird(s) noted flying over here:
- 2 Stock Doves
- 34 Wood Pigeons
- 3 Lesser Black-backed Gulls
- 62 Jackdaws
- 48 Rooks

Counts from the lake area:
- no Canada Geese
- 1 Greylag Goose
- 2 Mute Swans
- 20 (?♂) + 12 (3 broods) Mallard: see notes
- 3 Moorhens
- Coots not counted
- Great Crested Grebes not counted
- 1 Black-headed Gull
- 1 Grey Heron

Hirundines etc. noted:
- 1 Swift again

Warblers recorded (the figure in brackets is birds noted singing):
- 1 (0) Cetti's Warbler
- 10 (6) Chiffchaffs
- 5 (5) Reed Warblers
- 9 (7) Blackcaps
- no Garden Warblers
- no Common Whitethroats

Noted on the West end street lamp poles around-dawn:

Moths:
1 $ Common Footman Eilema lurideola [species #68]

Hoverflies:
1 Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]
1 Migrant Field Syrph Eupeodes corollae [Migrant Hoverfly; Migrant Aphideater]

Spiders, harvestmen etc.:
1 Long-jawed Orb-web Spider Tetragnatha sp.
1 harvestman Leiobunum blackwalli

NB: yesterday's moth on the lamps was a Common Zebra Moth Helcystogramma rufescens [was Orange Crest] [species #67]

Nothing else noted apart from:
>5 Horse-chestnut Leaf-miner Cameraria ohridella around a different tree to those noted yesterday.
I did not revisit the lake after the early lap.

(Ed Wilson)

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In the Priorslee Avenue tunnel:

NB: on my return from The Flash to retrieve my car a council worker was repainting one wall of the tunnel to cover the "artwork" AKA graffiti. The other wall will be done when his mate returns next week – Health and Safety requires two workers present when the other side of the Wesley Brook is accessed. His brush will not reach the ceiling!

Before the wall was painted...

Moths: [27 species here before today; no additions]
2 Brown House-moths Hofmannophila pseudospretella : one on the wall; one on the ceiling
1 Early Thorn Selenia dentaria : on the wall for a change
2 Single-dotted Waves Idaea dimidiata : one on the wall; one on the ceiling

Hoverflies:
1 Meadow Field Syrph Eupeodes latifasciatus [Broad-banded Aphideater]: on the ceiling.

Other Flies:
1 cranefly from the Limonid group
7 moth flies Psychodidae sp. [Drain Fly or Owl Fly]
10 midges of various species.

Beetles:
1 unidentified small beetle

Arthropods:
1 White-legged Snake Millipede Tachypodoiulus niger

Spiders, harvestmen etc.:
1 small unidentified spider

(Ed Wilson)

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The Flash: 06:20 – 07:25

(165th visit of the year)

Bird notes:
- the geese were milling about in several overlapping groups and hard to count accurately.
- four of the six Mute Swans were sitting happily together on the island. The other two seemed to be a pair, staying at the top end.
- no Mallard duckling noted and adults remain at historically low levels.
- 17 Tufted Duck again and I thought 12 appeared to be drakes in various stages of moult. Three birds seen in flight as I arrived might have been coming, going or merely passing by.
- the figure of juvenile Coots relates to dependent birds at or near nest sites. There will be some now fully-fledged juveniles mingling with the main group by the island and impossible to separate at that distance.
- back to two Great Crested Grebes with a single at each end.
- a Grey Heron present throughout.

Bird(s) noted flying over here:
- 3 (?♂) Tufted Duck: see notes

Noted on / around the water:
- 128 Canada Geese
- 33 Greylag Geese
- 6 Mute Swans
- 7 Mallard: see notes
- 17 (12♂) Tufted Duck
- 5 + 3 (2 broods) Moorhens
- 77 + 5 (2 broods) Coots
- 2 Great Crested Grebes: see notes
- 1 Grey Heron

Hirundines etc. noted:
- 2 House Martins

Warblers recorded (the figure in brackets is birds noted singing):
- 6 (6) Chiffchaffs
- 8 (5) Blackcaps

Noted around the area:

Butterflies:
none

Moths [on street lamp poles and in the grass] [52 species here before today; three additions today]
>10 Horse-chestnut Leaf-miner Cameraria ohridella [species #53]
1 Pale Straw Pearl Udea lutealis [species #54]
1 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
1 Small Dusty Wave Idaea seriata [species #55]

Bees, wasps etc.:
Common Wasp Paravespula vulgaris

Hoverflies:
Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]

Dragon-/Damsel-flies:
none

Lacewings, caddis flies etc.:
1 dead caddisfly

Other flies:
numerous different midges and flies

Bugs:
unidentified leafhopper

Beetles:
larvae of Alder Leaf Beetle Agelastica alni
Common Red Soldier Beetle Rhagonycha fulva

Spiders, harvestmen etc.:
1 harvestman Dicranopalpus ramosus/caudatus
1 female harvestmen Leiobunum rotundum

New flowers for the year:
None

(Ed Wilson)

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2013
Nedge Hill
Redstart
(John Isherwood)

2008
Priorslee Lake
Sandwich Tern
Common Tern
(Ed Wilson)

2007
Priorslee Lake
5 Shelduck
(Ed Wilson)