11 Aug 23

Priorslee Lake and The Flash

17.0°C > 19.0°C: Often clear with several more cloudy spells. Moderate south-westerly breeze, occasionally gusting fresh. Very good visibility.

Sunrise: 05:45 BST

+ = my first sighting of this species at this site this year.
++ = new species for me at this site.

Priorslee Balancing Lake: 05:05 – 06:15 // 07:25 – 09:50

(161st visit of the year)

Bird notes:
- At least two groups of four House Martins seen – family groups? Later eight together – same?
- A Song Thrush was singing quietly at 05:15 – the first I have noted for some weeks.
- For the first time this year I noted many Goldfinches, including juveniles, feeding on the extensive thistle-down. A passing Sparrowhawk put them all up revealing at least 30 birds.
- A Reed Bunting was heard calling: my first for several weeks.

Counts of birds noted flying over here:
- 73 Canada Geese: 24 outbound in six groups; 49 inbound in two groups.
- 27 Greylag Geese: outbound in two groups
- 70 Wood Pigeons
- 12 Lesser Black-backed Gulls: five adults; the rest immatures (all juveniles?)
- 27 unidentified large gulls: flew South to far East c.05:20
- 1 Sparrowhawk
- 17 Jackdaws
- 5 Starlings

Warblers noted (the number singing in brackets):
- 14 (2) Chiffchaffs
- 2 (0) Reed Warblers
- 1 (0) Blackcaps
- 1 (0) Common Whitethroat

Hirundines etc., noted:
- 2 Sand Martins: flew through c.08:20
- 8 House Martins at least

Counts from the lake area:
- 4 Canada Geese: stopped off while inbound
- 2 + 2 Mute Swans
- 6 (?♂) Mallard
- 2 Moorhen
- 66 Coots
- 5 + 3 (2 broods) Great Crested Grebes
- 62 Black-headed Gulls on the football field c.06:05: no juveniles noted. 14 (of these?) earlier at the lake.
- 3 Lesser Black-backed Gulls: one adult; two juveniles

On or around the street lamp poles at dawn:
- *1 Common Wasp (Paravespula vulgaris): dead in a spider's web
- 2 Pond Olive-type mayflies (Cloeon dipterum?)
- 3 pale flies
- *1 spider sp., probably a Common Candy-striped Spider (Enoplognatha ovata)

Noted later:

Butterflies:
- *Green-veined White (Pieris napi)
- *Speckled Wood (Pararge aegeria)
- *Gatekeeper (Pyronia tithonus)
- *Peacock (Aglais io)
- Comma (Polygonia c-album)
- *Small Copper (Lycaena phlaeas)
- *Common Blue (Polyommatus icarus)

Moths:
- *Satin Grass-veneer (Crambus perlella): many
- *Pale Straw Pearl (Udea lutealis)
**I did not check most of the grass moths flying today.

Bees / wasps etc.:
- Honey Bee (Apis mellifera)
- Garden Bumblebee (Bombus hortorum)
- Red-tailed Bumblebee (Bombus lapidarius)
- Common Carder Bee (Bombus pascuorum)
- Common Wasp (Paravespula vulgaris)

Hoverflies:
- Plain-faced Dronefly (Eristalis arbustorum)
- Tapered Dronefly (Eristalis pertinax)
- Common Dronefly (Eristalis tenax)
- Chequered Hoverfly (Melanostoma scalare)
- Dead-head Hoverfly (Myathropa florea) [aka Batman Hoverfly]

Dragon-/damsel-flies:
- *male Southern Hawker (Aeshna cyanea)
- *Common Blue Damselfly (Enallagma cyathigerum)
- *Blue-tailed Damselfly (Ischnura elegans)

Other flies:
- none of note

Beetles:
- 7 Spot Ladybird (Coccinella 7-punctata)
- *small black beetle sp.

Bugs:
- none

Also
- White-lipped Snail (Cepaea hortensis)

This morning's sunrise.

A plethora of butterfly photos today. Here is a female Green-veined White (Pieris napi). In all the 'white' butterflies females have four dark spots, one on each wing: males have just two dark spots, only in the forewing.

And the underside of a different specimen. I am not sure this is a female – I cannot make up my mind whether there is a dark mark in the hind-wing.

A Speckled Wood (Pararge aegeria).

A male Gatekeeper (Pyronia tithonus). Males show the brown mark in the centre of the forewing.

Another pristine Peacock butterfly (Aglais io). There were two this morning the other being the only butterfly I have seen so far on the large flowering Buddleia sp. alongside Teece Drive.

Today's highlight was this male Small Copper butterfly (Lycaena phlaeas). This is only my second record of this species here, my first was as recently as 03 June this year.

A second generation male Common Blue butterfly (Polyommatus icarus).

This specimen is rather worn with brown showing through.

Not quite sharp but it shows it feeding through his long tongue.

This grass-moth was typical of some I noted flying around. It is probably a Satin Grass-veneer (Crambus perlella) though any marking have worn off and it could be almost any of the grass-moths.

A very faded Pale Straw Pearl moth (Udea lutealis). All the markings, faint at the best of times, have worn away.

A Common Wasp (Paravespula vulgaris) caught up in a spider web. Somewhat unusual as this species is usually strong-enough to break free. A small midge is present as well.

A male Southern Hawker (Aeshna cyanea) I found alongside the public path at the West end.

It flew off when a passing cyclist flushed it. Luckily I noted it flew up in to a nearby tree.

A very smart male Common Blue Damselfly (Enallagma cyathigerum).

A male Blue-tailed Damselfly (Ischnura elegans). I think this is a rather late date for this species to be flying.

Today's unidentified fly.

A small beetle I found. It seems to be the same species as I noted on the same tree a few weeks ago. The background here is my fingers.

This spider was sprinting down one of the street lamp poles: I think probably a Common Candy-striped Spider (Enoplognatha ovata).

(Ed Wilson)

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The Flash: 06:20 – 07:20

(149th visit of the year)

Bird notes:
- A duck Mallard seen with a single duckling.
- Probably more Coots than I recorded. Almost all the birds were resting en masse along the East side of the island and it was almost impossible to separate them. One bird noted was still valiantly sitting on a nest.
- One of the singing Robins was performing its rather more melancholy Winter song.

Bird(s) noted flying over here:
- 1 Sparrowhawk
- 4 Jackdaws

Warblers noted (the number singing in brackets):
- *1 (1) Willow Warbler
- 10 (0) Chiffchaffs
- 1 (0) Blackcap

Hirundines etc., noted:
- 7 House Martins

Noted on / around the water
- 7 Canada Geese
- 2 Greylag Geese: one of these arrived
- 3 + 4 (1 brood) Mute Swans
- 17 (?♂) + 1 (1 brood) Mallard
- [all-white feral duck not noted]
- 29 (>7♂) Tufted Duck
- 8 Moorhens
- 48 Coots
- *4 + 2 (1 brood) Great Crested Grebes
- 1 Cormorant: arrived
- 1 Grey Heron

Noted on / beside the street lamp poles around the water etc.:
- *spider sp.

Noted elsewhere around The Flash:
- *fungus, perhaps Peppery Milkcap (Lactarius piperatus)

The reflections make this photo hard to look at. One of the adult Great Crested Grebes is seen bringing in a fish for the juvenile on the other parents' back. Meanwhile a second juvenile is alongside an adult.

A Grey Heron settles on a tree-top. Many people are surprised to see this species on tree-tops but of course they nest high up in trees so they are happy at height.

The long supercilium identifies this as a Willow Warbler. The rather short, thick and pale bill are also features to note.

This fungus appears at the top end every year around this time. It has been suggested to me they are Peppery Milkcap (Lactarius piperatus).

A smart spider resting on one of the street lamp poles.

(Ed Wilson)

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Between the lake and The Flash on / around street lamp poles:

Moths:
- *1 Garden Grass-veneer (Chrysoteuchia culmella)
- *1 Small Grey (Eudonia mercurella)
- *1 Yellow-barred Brindle (Acasis viretata)

also
- 1 Alder Leaf Beetle (Agelastica alni): larvae

No longer common as it comes to the end of its flight period: this is a Garden Grass-veneer (Chrysoteuchia culmella), recognisable by the angled cross-line toward the back of the wing.

 This is a Small Grey moth (Eudonia mercurella). Just about the only 'grey' species still flying.

A Yellow-barred Brindle moth (Acasis viretata). Looks green and not yellow to me. Don't blame me – I didn't name it!

(Ed Wilson)

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Noted in the Priorslee Avenue tunnel:

Just several unidentified midges.

(Ed Wilson)

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On this day can be found via the yearly links in the right-hand column.

Sightings from previous years without links are below

2011
Priorslee Lake
Green Sandpiper
Tree Pipit
(Ed Wilson)

2008
Priorslee Lake
Wheatear
(Ed Wilson)

2007
Priorslee Lake
Possible Wood Sandpiper
A female Peregrine
(Ed Wilson)