5 Jun 26

Priorslee Balancing Lake and The Flash

10.0°C > 14.0°C: Early broken high-level cloud gave way to more lower cloud. Although few sunny intervals it remained bright. Moderate westerly breeze. Excellent visibility.

Sunrise: 04:48 BST

* = a species photographed today
! = a first sighting of the species this year
$ = a new species for me in this area

Priorslee Balancing Lake: 04:55– 05:50 // 06:55 – 09:45

(132nd visit of the year)

Bird notes:
Worth highlighting was a singing Sedge Warbler in the West end reeds at c.05:10 (but not later). This species has occasionally turned up in June previously, long after the main passage has finished. Such birds are likely failed breeders looking for a new location for a second attempt. On at least one previous occasion such a later arrival successfully bred here.

Other bird notes:
- no Canada Geese seen from here again.
- once again the seven Greylag Geese goslings were present and correct with a third adult present throughout.
- no small Mallard ducklings seen. Probably four independent juveniles as two duos.
- a pair of Tufted Duck present throughout.
- no juvenile Coots seen and a low count of adults.
- the pair of Great Crested Grebes with at least one juvenile seen again.
- *two family groups of Blackcaps noted.
- the recent (South side) Common Whitethroat was not found. At the original south-west site a bird was singing early and then at least two bird seen in the same general area.

Bird(s) noted flying over here:
- 2 Lesser Black-backed Gulls: together
- 6 Wood Pigeons again
- 8 Jackdaws
That's all

Counts from the lake area:
- 3 + 7 (1 brood) Greylag Geese
- 2 Mute Swan: assuming the pen is still on the hidden nest
- *13 (9♂) + 4 (2? brood) Mallard: see notes
- 2 (1♂) Tufted Duck
- 2 Moorhens only again
- 22 Coots
- 6 + 1? (1 brood) Great Crested Grebes: see notes
- no Grey Herons

Hirundines etc. noted:
- *>25 Swifts
- 4 Barn Swallows
- 2 House Martins

Warblers noted (the number in brackets refers to birds singing):
- 6 (6) Chiffchaffs only
- 1 (1) Sedge Warbler
- 9 (9) Reed Warblers
- *15 (9) Blackcaps
- 2 (1) Common Whitethroats

Also noted:
A few things braved the elements, mainly flies.

Butterflies:
- 1 Speckled Wood Pararge aegeria

Moths:
- 7 Yellow-barred Longhorn Nemophora degeerella
- 1 Green Oak Tortrix Tortrix viridiana

Bees, wasps etc.:
- Garden Bumblebee Bombus hortorum
- *Tree Bumblebee Bombus hypnorum
- Red-tailed Bumblebee Bombus lapidarius
- Common Carder Bee Bombus pascuorum
- Buff-tailed Bumblebee Bombus terrestris
- *!Vestal Cuckoo Bee Bombus vestalis [Vestal Cuckoo Bumblebee]
at least one hundred bumblebees seen and many not specifically identified
where are all the Honey Bees Apis mellifera?
- *Common Wasp Vespula vulgaris

Hoverflies:
- Buttercup Blacklet Cheilosia albitarsus [Late Buttercup Cheilosia]
- *Marmalade Hoverfly Episyrphus balteatus
- Common Dronefly Eristalis tenax
- *Tiger Hoverfly Helophilus pendulus [Tiger Marsh Fly; Sun Fly]
- *Blotch-winged Hoverfly Leucozona lucorum [Blotch-winged Whitebelt]
- *!Common Twist-tail Sphaerophoria scripta [Long Hoverfly; Common Globetail]
- *!Hornet Hoverfly Volucella zonaria [Hornet Plumehorn]
- *!$? possible female Aspen Leafwalker Xylota tarda

Damsel / Dragon-flies:
- *Azure Damselfly Coenagrion puella [Azure Bluet]
- Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
- Blue-tailed Damselfly Ischnura elegans [Common Bluetail]

Other flies:
I did not spend much time looking at flies that I mostly cannot identify
- long-legged fly Dolichopus ungulatus or similar
- Black Snipefly Chrysopilus cristatus: many males and only one female noted
- greenbottle Lucilia sp.
- Yellow Dung Fly Scathophaga stercoraria

Bugs:
- *!nymph of a Mirid bug Deraeocoris flavilinea

Beetles:
- larvae of Harlequin Ladybird Harmonia axyridis: very many
- *Harlequin Ladybird Harmonia axyridis var. succinea
- False Blister Beetle Oedemera lurida or O. virescens
- *Swollen-thighed Beetle Oedemera nobilis [False Oil Beetle or Thick-legged Flower Beetle]
- *Nettle Weevil Phyllobius pomaceus

Spiders, harvestmen etc.:
- Long-jawed Orb-web Spider Tetragnatha sp.

New flowers for the year:
- *Common Bird's-foot Trefoil Lotus corniculatus
- *Hedge Woundwort Stachys sylvatica

On the West end street lamp poles around dawn:
A complete blank.
I do wonder whether the street lights are operational. I do know that one failed many weeks ago.

The all-yellow/green bill of this Mallard means it is a drake. The flank plumage suggests a duck (female) and the wings look short. It is almost certainly a juvenile drake that will moult in to adult plumage by the end of August.

I managed a few photos of the many Swifts around the East end of the lake. Just visible is the white throat patch. The plumage is not as black as you imagine when you see them scything through the sky.

 In fact when the light catches them they can appear silvery.

My best shot. One with its mouth open about to devour what is barely visible as a smudge in the photo.

A not-very-obliging juvenile Blackcap. I knew it was a juvenile and not a female by its begging calls.

With a bit of licence you can just about make out the start of a gape line, mostly hidden behind the branch. There is always a branch (or two).

I will try for a better photo of a Green Oak Tortrix moth Tortrix viridiana . I had to use full zoom through a myriad of grass stems to isolate and partly-focus this.

That is not very nice of the Tree Bumblebee Bombus hypnorum!

Surprisingly this is also a Tree Bumblebee: the not uncommon dark form.

These seem to be two Vestal Cuckoo Bees Bombus vestalis enjoying a Common Knapweed Centaurea nigra flower. At the time I thought Buff-tailed Bumblebees B. terrestris but there is no midriff band of colour and the white of the tail is too extensive.

I have not see many Common Wasps Vespula vulgaris so far this year. Here is one happily munching a wooden fence to make the pulp for its nest.

A Marmalade Hoverfly Episyrphus balteatus showing its abdomen markings.

A smart Tiger Hoverfly Helophilus pendulus also known as Tiger Marsh Fly or Sun Fly.

A Blotch-winged Hoverfly Leucozona lucorum also known as Blotch-winged Whitebelt.

My first Common Twist-tail Sphaerophoria scripta of the year: a male which best fits the oft-used name of Long Hoverfly. Only the males are "long": the females have a much shorter abdomen but share the males' bright yellow scutellum and antennae.

A splendid hoverfly. It is a Hornet Hoverfly Volucella zonaria. It may resemble a European Hornet Vespa crabro but the short antennae say otherwise. The antennae are unusual for hoverflies and give it the alternative name of Hornet Plumehorn. It is just possible to see plumes toward the tip of the antennae.

I am not 100% sure about this hoverfly. It is possibly a female Aspen Leafwalker Xylota tarda which would be a new species for me. I really needed to have seen the abdomen pattern more clearly to confirm that it is not the less-likely of Obsidentify's two suggestion of Orange-belted Leaf Licker X. segnis (or Orange-belted Leafwalker) - a species I see annually.

A male Azure Damselfly Coenagrion puella and like the one yesterday at rest with the wings held partly open. Is this an identification feature for this species? I cannot see it in the literature.

This is the nymph of the Mirid bug Deraeocoris flavilinea.

I have recently read that Harlequin Ladybirds Harmonia axyridis of the form succinea without spots are tenerals (immatures), yet to acquire the spotting.

This one is half-and-half.

Some go overboard on the spotting.

A female Swollen-thighed Beetle Oedemera nobilis identified by the way the elytra (wing cases) are held apart. Females do not have the swollen thighs. I only noticed females today.

A worn-looking Nettle Weevil Phyllobius pomaceus.

The first time I have noticed Common Bird's-foot Trefoil Lotus corniculatus this year. Clearly though it has been flowering for some while.

Another first-of-the year: a spike of Hedge Woundwort Stachys sylvatica

(Ed Wilson)

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In the Priorslee Avenue tunnel:

Flies:
- 8 midges only of several species again
- 2 moth fly Psychodidae sp. [Drain Fly or Owl Fly]
- 2 craneflies

Spiders, harvestmen etc.:
- *1 probable Snake-back Spider Segestria senoculata
- 1 Long-jawed Orb-web Spider Tetragnatha sp.

The only thing of interest in the tunnel this morning was this spider. It seems to be a Snake-back Spider Segestria senoculata which as NatureSpot says "gets the English name from the row of dark coloured patches on the elongated abdomen said to resemble the markings on some poisonous snakes, such as the adder". Yes, well.

(Ed Wilson)

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The Flash: 05:55 – 06:50

(129th visit of the year)

Bird notes:
- Another large count of adult Canada Geese with the gosling and its parents among them. None of them was seen to fly though not all seem to have shed all their flight feathers as yet.
- thirteen Greylag Geese together.
- still eight visiting Mute Swans.
- a higher count of Mallard. Fewer were at the Balancing Lake today.
- just eight juvenile Coots found from three broods. The second brood could again not be counted as a parent was brooding them on the nest. All four well-grown juveniles from their first brood seen again. Yesterday's new brood of five down to three.
- again only one Great Crested Grebe.
- a Grey Heron was standing on the island.
- a lone Starlings flew over.

Bird(s) noted flying over here:
- 1 Starling
- 2 Jackdaws

Noted on / around the water:
- 148 + 1 (1 brood) Canada Geese
- 13 Greylag Geese
- 10 Mute Swans: assuming the pen is still on the hidden nest.
- 20 (15♂) Mallard
- 2 Moorhens only
- 39 + 8 (3 broods) Coots
- 1 Great Crested Grebe again
- 1 Grey Heron

Hirundines etc. noted:
- no Swifts
- 4 House Martins

Warblers noted (the number in brackets refers to birds singing):
- 2 (2) Chiffchaffs
- 1 (1) Blackcap only

Noted around the area:

Moths:
- 1 Yellow-barred Longhorn Nemophora degeerella

Bees, wasps etc.:
- *Buff-tailed Bumblebee Bombus terrestris : asleep on a street lamp pole

Flies:
- 2 Black Snipeflies Chrysopilus cristatus: all males
- 1 moth fly Psychodidae sp. [Drain Fly or Owl Fly]

Beetles:
- larva of Harlequin Ladybird Harmonia axyridis: just one

Spiders, harvestmen etc.:
- *1 Long-jawed Orb-web Spider Tetragnatha sp.

A Buff-tailed Bumblebee Bombus terrestris asleep on a street lamp pole. Well you have to sleep somewhere.

A Long-jawed Orb-web Spider from the Tetragnatha group. To my eyes this individual has a tubbier body than usual. Perhaps a female carrying eggs?

(Ed Wilson)

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2012
Wrekin
Several Pied Flycatchers
2 male Common Redstarts
2 Wood Warbler
3 male Tree Pipits
(Glenn Bishton)

2011
Priorslee Lake
2 Common Sandpiper
(John Isherwood)

Nedge Hill
1 Wheatear
(John Isherwood)

2007
Nedge Hill
2 Wheatears
(John Isherwood)

2006
Priorslee Lake
1 drake Ruddy Duck
(Ed Wilson)

4 Jun 26

Priorslee Balancing Lake and The Flash

12.0°C > 15.0°C: A medium-level overcast gave way to lower cloud with a light shower after 07:45. A few sunny intervals after 09:00. Moderate / fresh westerly breeze. Excellent visibility.

Sunrise: 04:50 BST again

* = a species photographed today
! = a first sighting of the species this year
$ = a new species for me in this area

Priorslee Balancing Lake: 04:45– 06:00 // 07:10 – 09:50

(131st visit of the year)

Bird notes:
- no Canada Geese seen from here today.
- once again the seven Greylag Geese goslings were present and correct with a third adult present. Later there were four adults other than the parents. These were acting as two pairs so did the earlier third adult depart?
- *four small Mallard ducklings seen. It may be that some adults not noted as drakes were in fact well-grown and independent juveniles. Hard to tell.
- *a pair of Tufted Duck seen early. Later I could only find a drake.
- only one juvenile Coot seen again.
- *one of the pairs of Great Crested Grebes was seen with at least one juvenile on a parent's back.
- two Grey Herons were flying around at c.05:15. I saw one fly off East much later. The other was still present at 09:00.
- a higher than recent count of over-flying Jackdaws boosted by a loose group of 27 flying North.
- again only the recent (South side) Common Whitethroat was heard singing and then only c.05:20.

Bird(s) noted flying over here:
- 5 Greylag Geese: a trio and, much later, a pair flew West.
- 3 Lesser Black-backed Gulls: singles
- 2 Stock Doves: together
- 6 Wood Pigeons
- 31 Jackdaws

Counts from the lake area:
- 6? + 7 (1 brood) Greylag Geese: see notes
- 2 Mute Swan: assuming the pen is still on the hidden nest
- *26 (19♂) + 4 (1 brood) Mallard: see notes
- *2 (1♂) Tufted Duck: see notes
- 2 Moorhens only
- 24 + 1 (1 brood) Coots again
- *6 + 1? (1 brood) Great Crested Grebes: see notes
- 2 Grey Herons: see notes

Hirundines etc. noted:
- c.20 Swifts
- >6 Barn Swallows
- >8 House Martins

Warblers noted (the number in brackets refers to birds singing):
- 10 (10) Chiffchaffs
- 8 (8) Reed Warblers
- 10 (10) Blackcaps
- 1 (1) Common Whitethroat

Also noted:
A few things braved the elements, mainly flies.

Butterflies:
none

Moths:
- 11 Yellow-barred Longhorn Nemophora degeerella
- *1 Common Marble Celypha lacunana

Bees, wasps etc.:
- Garden Bumblebee Bombus hortorum
- Tree Bumblebee Bombus hypnorum
- *Common Carder Bee Bombus pascuorum
- Buff-tailed Bumblebee Bombus terrestris

Hoverflies:
- Buttercup Blacklet Cheilosia albitarsus [Late Buttercup Cheilosia]
- *Marmalade Hoverfly Episyrphus balteatus
- *Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]

Damsel / Dragon-flies:
- *Azure Damselfly Coenagrion puella [Azure Bluet]
- *Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
- Blue-tailed Damselfly Ischnura elegans [Common Bluetail]

Other flies:
- *Common Blow Fly Calliphora vicina
- Black Snipefly Chrysopilus cristatus: many males and only one female noted
- *long-legged fly Dolichopus ungulatus or similar
- greenbottle Lucilia sp.
- *Muscid fly Phaonia sp., probably P. errans
- *Awkward Clusterfly Pollenia rudis
- Yellow Dung Fly Scathophaga stercoraria
- *!Tachinid Fly, likely a Thelaira species
- otherwise the usual array of unidentified fly species

Bugs:
none

Beetles:
- *flea beetle Crepidodera fulvicornis
- *larvae of Harlequin Ladybird Harmonia axyridis
- Harlequin Ladybird Harmonia axyridis var. succinea
- *Harlequin Ladybird Harmonia axyridis var. spectabilis
- *pollen beetle Meligethes sp.

Spiders, harvestmen etc.:
- Long-jawed Orb-web Spider Tetragnatha sp.

On the West end street lamp poles around dawn:
One unidentified fly was my reward.

A duck Mallard with a brood of four small ducklings. I do not know how these relate to other recent sightings of small ducklings.

All the way across the water the head of the duck Tufted Duck can just about be seen behind the drake. I could not locate her later. Might she be nesting somewhere?

Another distant shot. At least one Great Crested Grebe (in "humbug" plumage) is visible reaching out for the morsel brought by the other adult.

 A male Bullfinch with his chest puffed out.

Not a very good photo: it was raining at the time and I had already flushed this Common Marble moth Celypha lacunana twice to get it in the open to ID it.

"Get in there son!". This bumblebee is a slight puzzle. The ginger thorax and white tail point to Tree Bumblebee Bombus hypnorum yet the abdomen has white bands, albeit indistinct. This point to it being a Common Carder Bee B. pascuorum which is also supported by the dark centre to the ginger "pile". That said that "pile" is a more intense tone than most Common Carder Bees. Obsidentify was about 50:50 with two species.

A Marmalade Hoverfly Episyrphus balteatus doing what it supposed to be doing. This species can vary in tone with some looking like lemon marmalade and some orange marmalade. This is in-between.

A Chequered Hoverfly Melanostoma scalare. It seems that females of this species (with triangular yellow marks) predominate at the moment.

A well-posed male Azure Damselfly Coenagrion puella with wings held slight apart and clearly showing the "U"-shaped mark on the top visible body segment.

For comparison this male Common Blue Damselfly Enallagma cyathigerum has an "Ace of Clubs" mark instead.

A Common Blow Fly Calliphora vicina.

A common species at the moment is this long-legged fly Dolichopus ungulatus (or similar).

The bulge along the wing edge indicates this is a Muscid fly of the Phaonia genus. The pale grey tone suggests it is probably P. errans.

With the golden (it says in the books) hairs on the thorax this is most likely an Awkward Clusterfly Pollenia rudis: the most abundant of the clusterflies.

This hairy creature is a Tachinid Fly and is likely a Thelaira species though all those illustrated on the internet have some orange areas on the abdomen.

A tiny fly on the "eye" of an Ox-eye daisy Leucanthemum vulgare. Note the small and rounded head (all-eyes) is almost detached from the thorax. I have no idea as to species. I'll go along with Obsidentify: "unknown fly or midge".

This seems to be the flea beetle Crepidodera fulvicornis. The colour of this species depends on the angle of light. A definite green tinge to the otherwise coppery elytra and head. Flea beetles are so-named not because of their size but because their swollen hind femur (difficult to see in this photo) allows then to escape predators by jumping like a flea.

Here is a larva of the Harlequin Ladybird Harmonia axyridis.

A Harlequin Ladybird Harmonia axyridis of the less common form spectabilis.

One of the pollen beetles Meligethes sp. that specialise in feeding on the pollen of yellow flowers as with this buttercup. Despite there being many thousand buttercups around the like I usually find these (and Plain Pollen-moths Micropterix calthella – though not today) is a small shaded clump of about 30 flowers.

(Ed Wilson)

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In the Priorslee Avenue tunnel:

Flies:
- 7 midges only of several species again
- 2 moth fly Psychodidae sp. [Drain Fly or Owl Fly]
- 1 Common Crane-fly Tipula oleracea

Spiders, harvestmen etc.:
- 3 Long-jawed Orb-web Spiders Tetragnatha sp.

(Ed Wilson)

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The Flash: 06:05 – 07:05

(128th visit of the year)

Bird notes:
- A gross of adult Canada Geese noted, eighteen of which flew out. The gosling and its parents were on the water among a large group of Canadas.
- three Greylag Geese together when I arrived. A group of twenty arrived.
- still eight visiting Mute Swans.
- a low count of Mallard. Perhaps some were at the Balancing Lake where there was a higher than recent number.
- thirteen juvenile Coots found from four broods. Yesterday's new second brood could not be counted as a parent was brooding them on the nest. I did see all four well-grown juveniles from their first brood. Also a new-to-me brood of five.
- I only spotted one Great Crested Grebe.
- a trio of Starlings flew over. Not exactly rare but I see this species infrequently here at the time I visit.

Bird(s) noted flying over here:
- 3 Starlings

Noted on / around the water:
- 144 + 1 (1 brood) Canada Geese: of these 18 departed in three groups
- 23 Greylag Geese: of these 20 arrived together
- 10 Mute Swans: assuming the pen is still on the hidden nest.
- 11 (8♂) Mallard only: see notes
- 6 Moorhens
- 44 + 13 (4 broods) Coots
- 1 Great Crested Grebe

Hirundines etc. noted:
- no Swifts
- 2 House Martins

Warblers noted (the number in brackets refers to birds singing):
- 3 (3) Chiffchaffs
- 4 (4) Blackcaps

Noted around the area:

Moths:
- 1 Yellow-barred Longhorn Nemophora degeerella
- *!1 White-banded Grass-moth Crambus pascuella [was Inlaid Grass-veneer]

Flies:
- 4 Black Snipeflies Chrysopilus cristatus: all males
- *2 dagger flies Empis livida
- 2 moth flies Psychodidae sp. [Drain Fly or Owl Fly]

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

The first of the confusing "grass moths" to appear this year. The larvae of these feed on grass roots and the adults spend most of their time lurking in long grass where they usually rest head-down before flying a long ways away when disturbed. They will come to light as this White-banded Grass-moth Crambus pascuella has done. It requires a good view to identify the species.

This the dagger fly Empis livida with three stripes on the thorax and reddish legs. This group are also known as dance flies. I am not sure why as I have never seen them do so.

(Ed Wilson)

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2007
Priorslee Lake
1 Gadwall
(John Isherwood)

2006
Priorslee Lake
4 Ruddy Ducks
1 Common Sandpiper
(Ed Wilson)