2 Jul 24

Priorslee Balancing Lake and The Flash

11.0°C > 13.0°C: Early low cloud and light drizzle. Cleared briefly around 07:00 but soon clouded again, remaining somewhat brighter to the East. Moderate / fresh north-westerly. Good visibility.

Sunrise: 04:52 BST

+ = a species photographed today
! = a new species for me here this year
!! = a new species for me in Shropshire

Priorslee Balancing Lake: 05:05 – 06:00 // 07:10 – 09:15

(143rd visit of the year)

Bird notes
*Highlight today was a record of three Oystercatchers on the south-west grass. I noted two at 07:35. There were three by 08:45, though the third may have been present earlier.

Lowlight was failing to hear the usually very noisy Cetti's Warbler. I have seen nothing that might have suggested he has a mate this year. He may have given up and moved on. There has been one bird here since late 2021. I suspected a pair last year though I never saw any young. Neither the Garden Warbler nor the Common Whitethroat were heard singing so perhaps it was just the miserable weather.

Other bird notes:
- at the cold and damp start there was, unusually, just a single Swift overhead. Later there were six: still a low number in the conditions when they would normally be hunting insects en masse.
- a Common Kestrel was hovering over the fields to the East of Castle Farm Way at 05:35.

Counts of birds noted flying over:
- 72 Wood Pigeons
- 1 Herring Gull
- 10 Lesser Black-backed Gulls
- 1 Cormorant
- 1 Common Kestrel
- 5 Jackdaws
- 1 Greenfinch

Hirundines etc. noted:
- 6 Swifts
- 4 Barn Swallows
- 5 House Martins

Warblers noted (the figure in brackets relates to birds heard singing):
- 19 (12) Chiffchaffs
- 6 (3) Reed Warblers
- 13 (9) Blackcaps
'nominal' warbler:
- 1 (1) Goldcrest

Counts from the lake area:
- 2 Mute Swans
- 6 (6♂)
- 3 + 2 (2 broods) Moorhens
- 23 + 7 (4 broods) Coots: one of these a new brood
- 3 Great Crested Grebes
- *3 Oystercatchers
- 1 Herring Gull

Noted on the street lamps poles pre-dawn:

Harvestman:
- *1 !female harvestman Leiobunum rotundum

Noted later:

Butterflies:
- none

Moths:
- Common Marble Celypha lacunana

Bees, wasps etc.:
- *ichneumon sp.

Hoverflies:
The first name is that used by Stephen Falk. The name in square brackets is that given by Obsidentify or other sources if different. Scientific names are normally common. The species are presented in alphabetic order of those scientific names.
- *Common Dronefly Eristalis tenax
- *Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]

Damsel-/dragon-flies:
- none

Other flies:
- *!Long-horned Black Legionnaire Beris geniculata
- Black Snipefly Chrysopilus cristatus
- *long-legged fly, perhaps Dolichopus trivialis
- even more unidentified flies and *midges

Bugs etc.:
- none

Beetles:
- Alder Leaf Beetle Agelastica alni : adult and *larva
- *!Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]

Molluscs:
- White-lipped Snail Cepaea hortensis

Spiders:
- none

New flowers noted
- none

This Oystercatcher has heard there is a hole in the sailing club's concrete platform. It is looking in to it (groan).

Here are two other Oystercatchers. Their bill colour is slightly different: but they are both adults as any juvenile would show white under the chin and would be browner-toned rather than black and the bill would be grey.

And to prove there were three. Unusually for a typically noisy species I heard none of them call.

One of a family party of Barn Swallows hunting insects here.

Probably one of the juveniles as it has no tail-streamers.

A worn-looking adult. It will replace the brown wing feathers with smart new blue-tinged feathers in time for it to set off to over-winter perhaps as far away as South Africa.

An ichneumon. No idea which of the 2000 or so species that occur in the UK it might be. It has, relatively, long antennae. The whole insect was less than 3cm (c.1").

One of just two, probably, species of hoverfly seen today. This is a female Common Dronefly Eristalis tenax.

Hoverfly species #2 is a male Chequered Hoverfly Melanostoma scalare.

Well now. Is this another male Chequered Hoverfly or a third species this morning? It has the same long body but the abdomen seems slightly 'waisted' which suggests it may be one of the slightly smaller Platycheirus group. To be certain I would need to be able to see the front legs. Fat chance as it hovers on a dull morning.

I am sure I have shown this fly previously. Further research suggests it is most likely a Long-horned Black Legionnaire Beris geniculata.

Another probably seen before. The pale legs suggest this long-legged fly may be Dolichopus trivialis.

An unknown fly shows how to sit at what looks to be an awkward angle. It is an out-of-focus Alder Leaf Beetle larva Agelastica alni in the background.

An insect that came to visit me! A midge: a male because of the plumed antennae so I was not in danger of being bitten. Only females bite / sting to get the blood they need for egg development.

About time that Common Red Soldier Beetles Rhagonycha fulva began to appear. Their other common name of Hogweed Bonking-beetle is normally apposite. This year (as last) some of the Common Hogweed Heracleum sphondylium is well past its sell-by-date before the beetles have appeared.

This is a female harvestman Leiobunum rotundum. Females of this group are easier to separate as the pattern on their abdomen differs between the species. Not so with the more globular males.

(Ed Wilson)

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In the Priorslee Avenue tunnel:

Moths:
- *1 Tawny Grey Eudonia lacustrata

Spiders:
- *1 just perhaps a six-eyed spider Harpactea hombergi

Conveniently sitting on the wall of the tunnel at eye-level and providing clear contrast I have no doubts about this being a Tawny Grey moth Eudonia lacustrata. There are four common 'grey' moths likely to be seen in out area. It is not always not easy to distinguish between them.

This spiders looks distinctive-enough but the best I can offer is the just a six-eyed spider Harpactea hombergi. Most spiders have eight eyes.

(Ed Wilson)

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The Flash: 06:05 – 07:05

(146th visit of the year)

Bird notes:
- the geese were well-arranged for easy counting this morning and today's counts are probably the most accurate of the past week or so. As far as I can tell none of the geese is able to fly at the moment. Some variability is likely as birds hide inside the island after they have eaten breakfast.
- again just two (near) adult Mute Swans seen both in the area of the island though not together. None was seen at the top end and no cygnets noted.
- the light-level was too low to get a proper count of the Coots on the edge of the island. I am sure there were more.
- a Common Buzzard was flushed from trees in squirrel alley

Bird(s) noted flying over here:
- 1 Cormorant
- 1 Jackdaw

Hirundines etc. noted:
- 6 House Martins

Warblers noted (the figure in brackets relates to birds heard singing):
- 5 (4) Chiffchaffs
- 4 (4) Blackcaps
'nominal' warbler:
- 1 (1) Goldcrest

Noted on / around the water:
- 245 Canada Geese
- 71 Greylag Geese
- 1 Canada x Greylag Goose
- 2 Mute Swan
- 35 Mallard: no ducklings seen
- 16 (14♂) Tufted Duck
- 5 + 1 (1 brood) Moorhens
- 44 + 3 (2 broods) Coots
- 3 Great Crested Grebes

Noted elsewhere around The Flash:

Plant:
- *Mugwort Artemisia vulgaris

This is Mugwort Artemisia vulgaris with, what passes for flowers, yet to open. Not a winner for Obsidentify. At the time it suggested a bumblebee. When I showed it the leaves it thought a dandelion. Then when I showed it this edited photo the suggestion was a damselfly. To be fair it was never more than 20% certain. I was certain it was wrong and resorted to my Flora to confirm my suspicions.

(Ed Wilson)

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Sightings from previous years

2013
Priorslee Lake
Hobby
(Ed Wilson)

2012
Priorslee Lake
3 Redshank
Hobby
(Ed Wilson)

2010
Priorslee Lake
Common Sandpiper
(Ed Wilson)