18 Jun 21

Priorslee Lake and The Flash

12.0°C > 14.0°C: Mainly cloudy at medium level. Clearer to W but never approached here. Light / moderate NNW breeze. Very good visibility.

Sunrise: 04:45 BST once more

* = a picture today

Priorslee Lake: 04:20 – 05:30 // 06:20 – 09:10

(122nd visit of the year)

On an otherwise quiet morning the highlight was a Little Egret flushed off the N side at 08:20.

Bird notes:
- The Canada Geese have lost another of their goslings. The cob Mute Swan again?
- One Swift at 04:50. Again occasional singles until three after 07:45.
- No Starlings on either the football or academy playing fields.

Overhead:
- 5 Wood Pigeons
- 1 Sparrowhawk
- 1 Common Buzzard
- 1 Black-headed Gull: first-year
- 1 Herring Gull: immature
- 5 Jackdaws
- 4 Rooks

Hirundines etc., noted:
- >3 Swifts
- 4 House Martins

Warblers noted (the number in brackets is singing birds):
- 14 (12) Chiffchaffs again
- 9 (7) Reed Warblers
- 10 (10) Blackcaps
- 4 (4) Garden Warblers
- 3 (2) Common Whitethroats

Count from the lake area
- 2 + 1 (1 brood) Canada Geese
- 2 + 5 (1 brood) Mute Swans
- 3 (3♂) Mallard
- 3 Moorhens
- 25 + 13 (8 broods) Coots
- 8 Great Crested Grebes
- 6 Lesser Black-backed Gulls: one (near) adult and five immatures, all briefly
- 1 Little Egret, briefly

On / around the street lamps pre-dawn:
- 1 Unidentified spider sp.

Noted later:

Butterflies:
None

Moths:
- *Plain Gold (Micropterix calthella)
- Common Nettle-tap (Anthophila fabriciana)
- *Straw Dot (Rivula sericealis)
-*Unidentified caterpillar

Bees / Wasps:
- *Yellow-legged Mining Bee (Andrena flavipes)
- Garden Bumblebee (Bombus hortorum)
- Early Bumblebee (Bombus pratorum)

Hoverflies:
- Marmalade Hoverfly (Episyrphus balteatus)
- *possible Orange-belted Leafwalker (Xylota segnis)

Damsel-/Dragon-flies:
None

Other Flies:
- Black Snipe fly (Chrysopilus cristatus)
- Mystacides longicornis (Caddis Fly)
- *Cranefly Tipula oleracea
- *Cranefly Nephrotoma quadrifaria

Bugs:
None

Beetles:
- *possible Hawthorn Leaf Beetle (Lochmaea crataegi)
- Nettle Weevil (Phyllobius pomaceus)

Spiders:
- Stretch spider sp (Tetragnatha sp.)
- *Unidentified rufous-looking spider sp.

Newly identified flowers for the year:
- *Common Sorrel (Rumex acetosa)

I'm always curious about what is lurking in buttercups. This is 'just another Plain Gold moth (Micropterix calthella)' but I have never noticed this species has a yellowish head. I did wonder whether it was just pollen from the buttercup but my Field Guide to Micro Moths tells me the head is indeed yellowish.

This small straw-coloured moth with the dark spot in each forewing is, unsurprisingly, a Straw Dot (Rivula sericealis). I fouled up the photo of my previous sighting this year as it was just after dawn and the necessary flash completely over-exposed it. When I checked this photo I noted what seems to be a caterpillar behind it ...

 ... this caterpillar. No idea of its identity.

This rather splendid creature looks to be like a female Yellow-legged Mining Bee (Andrena flavipes) - females have a thicker pollen brush on the hind femur.

One to worry about. The thick hind femur suggests this might be the common hoverfly Orange-belted Leafwalker (Xylota segnis). However the thick femur looks almost too thick. The wings are obscuring the markings on the abdomen but it seems to me that it is the wings that are tinged brown rather than the 'orange-belt' showing through. So another gets put in the pending tray (aka the 'too hard' tray!).

This seems to be a female cranefly Tipula oleracea – a female because it has a pointed abdomen. It looks rather 'wide' and I read that this is often because of the eggs being stored within the body, ready to be inserted in to the ground when they are mature.

This is one of the cranefly species that rest with their wings over their back. It is Nephrotoma quadrifaria.

This small beetle resembles a Hawthorn Leaf Beetle (Lochmaea crataegi) in some respects – the longish, striped antennae; the black markings on a red-brown elytra – but it seems perhaps rather too elongated and not red-enough for that species.

This spider was the only live inhabitant on the lamp poles this morning. A few stray bits of leg probably from its meals.

Another spider I noted this morning. Looks rather like one of the stretch spiders though none of the photos on the web suggests this rufous form.

Hardly flowers ... this is all you get with Common Sorrel (Rumex acetosa), a member of the Dock family.

(Ed Wilson)

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Between the lake and The Flash:

- A Blackcap on singing duty by the lower pool.

Also noted
- 1 Grey Squirrel

(Ed Wilson)

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The Flash: 05:35 – 06:15

(107th visit of the year)

Bird notes:
- So where were all the Mallard this morning?
- The fly-over Collared Dove seemed to be unrelated to the two known breeding territories in the area.
- Only two of the normal brood of three Moorhens seen: likely the third was hiding somewhere.
- Two now independent juvenile Coots – just the start of the white shield visible on each bird. Also the single small juvenile with its parent by the island.
- No sign of any Great Crested Grebe today.

Birds noted flying over here:
- 1 Stock Dove
- 1 Collared Dove
- 2 Jackdaws
- 1 Starling

Hirundines etc., noted:
- 3 Swifts
- no House Martins

Warblers noted (the number in brackets is singing birds):
- 3 (3) Chiffchaffs
- 1 (1) Blackcap

On /around the water:
- 120 Canada Geese exactly
- 12 Greylag Geese
- 1 Greylag x Canada Goose again
- 3 + 2 (1 brood) Mute Swan
- 16 (11♂) Mallard
- 8 (5♂) Tufted Duck
- 3 + 2 (1 brood) Moorhens
- 3 juvenile Coots
- 1 Black-headed Gull: adult, briefly
- no Great Crested Grebes

Also noted
- nothing: all the moths gone.

(Ed Wilson)

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On this day
2020
Priorslee Lake
Today's Sightings Here

2019
Priorslee Lake
Today's Sightings Here

2018
Priorslee Lake
Today's Sightings Here

2017
Priorslee Lake
Today's Sightings Here

2016
Priorslee Lake
Today's Sightings Here

2010 
Trench Lock Pool 
4 drake Pochard 
(Ed Wilson)