8 May 26

Priorslee Balancing Lake and The Flash

9.0°C > 13.0°C: Mostly cloudy. A few breaks. A very light shower, mostly passing to the West. Light south-easterly breeze. Very good visibility.

Sunrise: 05:25 BST

* = a species photographed today
$ = a new species for me in this area

Priorslee Balancing Lake: 05:20 – 06:30 // 07:35 – 09:55

(110th visit of the year)

Bird notes:
- the Greylag Geese goslings still doing OK.
- *three Mallard ducklings seen: these seemed to be about a week old.
- still a big sexual disparity in the Tufted Duck: there was none of the chasing and communal diving see the previous two days.
- an adult Black-headed Gull was flying up and down the water c.05:45: an unusual date for any to be here.
- *a third year Herring Gull visited briefly at c.07:50.
- an adult Lesser Black-backed Gull visited very briefly at c.05:40
- more changes in the warblers:
a Sedge Warbler was singing from the lower pool as I walked to the Flash but not when I walked back. Probably a passage bird and my first at this location.
now eight singing Reed Warblers
two Garden Warbler singing again. The one hitherto near its traditional nesting area in the tallest bushes alongside the M54 had moved slightly toward the lake. A second was singing near the Teece Drive gate on my first circuit and was presumably the bird singing from the bottom end of the Ricoh hedge c.09:30. As usual neither was seen.
*the only Common Whitethroats noted was the recent arrival along the South side that was singing over a considerable area.
- for the third day I neither heard nor saw any Reed Buntings.

Bird(s) noted flying over here:
- 3 Canada Geese: a pair flew East; another pair flew East with one of them circling to splash down briefly.
- 1 Lesser Black-backed Gull
- 1 Cormorant again
- 3 Stock Doves: loosely together
- 3 Wood Pigeons

Counts from the lake area:
- 1 Canada Goose: briefly
- 2 + 7 (1 brood) Greylag Geese
- 2 Mute Swans
- *10 (7♂) + 3 (1 brood) Mallard
- 14 (12♂) Tufted Duck: see notes
- 1 Moorhen only
- 15 Coots only
- 6 Great Crested Grebes
- 1 Black-headed Gull: adult
- *1 Herring Gull: third year
- 1 Lesser Black-backed Gull: adult
- 1 Grey Heron: departed

Hirundines etc. noted:
no low cloud so birds feeding elsewhere
- 4 Swifts
- 6 Barn Swallows

Warblers noted (the number in brackets refers to birds singing):
Song is beginning to fade away as birds get on with nesting duties:
- 16 (14) Chiffchaffs
- 1 (1) Sedge Warblers
- 8 (8) Reed Warblers
- 12 (11) Blackcaps
- *1 (1) Common Whitethroat
- 2 (2) Garden Warblers: see notes
Whatever happened to the Cetti's Warbler!?

On the West end street lamp poles post-dawn:
Nothing!

Noted around the area later:
The sun was just about to appear after a very light shower

Butterflies:
- none

Caterpillar:
- *unidentified caterpillar – butterfly? moth? sawfly?

Bees, wasps etc.:
- none

Hoverflies:
- *Common Spotted Field Syrph Eupeodes luniger [Lunuled Aphideater]
- Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]
- *Spotted Meliscaeva Meliscaeva auricollis [Spotted Thintail]

Dragon- / damsel-flies:
- none

Other flies:
- *Common Blow Fly Calliphora vicina
- *Fever-fly Dilophus febrilis
- *dagger fly Empis tessellata
- *Fannia lustrator
- Greenbottle Lucilia sp.
- *Muscid fly Phaonia subventa
- *Yellow Dung Fly Scathophaga stercoraria
- *cranefly Tipula varipennis
- *other unidentified flies

Beetles:
- 7 Spot Ladybird Coccinella 7-punctata
- Harlequin Ladybird Harmonia axyridis var. spectabilis
- *also var. succinea
- *Pollen Beetle Meligethes sp.

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

New flowers for the year:
- *Red Clover Trifolium pratense

A few breaks early before more extensive cloud arrived giving a very light shower, and then the sun tried to get out again.

Always at the other end of the water! A duck Mallard with her three growing ducklings.

A third year Herring Gull. Features to note at this age are the extensive adult-looking inner primaries and the indistinct tail-band. The bill (hard to see) is mostly yellow with a small black area.

The recently arrived Common Whitethroat shouting from an unusually high perch.

An unidentified caterpillar descending from the canopy prior to pupating on, or in, the ground.

A Common Spotted Field Syrph Eupeodes luniger. Of all the hoverflies in this genus most individuals of this species are easily recognised by the obvious separation between each pair of yellow lunule-shaped marks.

Not easy to see the spots on this Spotted Meliscaeva hoverfly Meliscaeva auricollis. At least the Obsidentify name of Spotted Thintail points to the abdomen shape as well as the spotting (hidden by the folded wings). Note at the top of the view one of the very common but unidentified midges / flies.

The most boring of today's flies: a Common Blow Fly Calliphora vicina.

A Fever-fly Dilophus febrilis. It looks superficially like a beetle.

A good plan-view of the dagger fly Empis tessellata. I do need to try for a side-elevation shot to show the dagger-like mouth-parts clearly.

This fly is most likely Fannia lustrator (no common name). The tapered abdomen, orange base to the wings and rufous on the mid- and hind- legs are the features that point to this species.

A different individual.

There were many around today: here is another.

And another showing the leg colour clearly.

With an orange abdomen and barely striped thorax this is the Muscid fly Phaonia subventa.

A female Yellow Dung Fly Scathophaga stercoraria

 And a male. At this range I could not get all the body in focus.

Close up and personal with a cranefly Tipula varipennis.

"My what big eyes you have!" One of the unidentified flies from today. I don't think the body is green: I think it is some type of light interference pattern introduced by the camera.

Very frustrating. This fly has a very distinctive pattern on the thorax and would seem to be easy to ID. "Seem" being the operative word. I am not even sure to which family it belongs.

A typical Harlequin Ladybird Harmonia axyridis of the most common form succinea.

This one has lost / never had most of its spots: a frequent occurrence. I also noted one of the less-common form spectabilis but it dropped off a leaf in to the undergrowth before I could photograph it.

Soon to be abundant feeding in buttercups is this Pollen Beetle. One of many species in from the large Meligethes genus, most not further identifiable from photos.

I am feeling a bit guilty. I flushed a small midge and it flew in to the web of and was pounced on by a Long-jawed Orb-web Spider Tetragnatha sp. Count the 14 legs!

Red Clover Trifolium pratense. This species always starts flowering before White Clover T. repens and also continues after the latter species dies away in Autumn.

(Ed Wilson)

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Noted in the Priorslee Avenue tunnel:

Moths!!! My first of the year here!
- *1 Common Pug Eupithecia vulgata

Flies:
- 12 midges of at least two species
- 1 moth fly Psychodidae sp. [Drain Fly or Owl Fly]

Spiders, harvestmen etc.:
- *1 running crab spider Philodromus sp.
- *1 unidentified spider

A Common Pug moth Eupithecia vulgata. My first moth of the year here! Only 49 species to go to equal last year's total!

A running crab spider Philodromus sp. There are two broad categories of crab spider. Those that hide and wait for prey to blunder in to them: and this group that chases after prey.

I have not got an identity for this small spider that was running along a thread of its web.

(Ed Wilson)

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The Flash: 06:35 – 07:30

(107th visit of the year)

Bird notes:
- the five visiting Mute Swans still here with the resident cob keeping them corralled at the top end. One of the fishermen told me that a trio – two adults and a sub-adult - had briefly flown away only to return. The five do seem to be acting as a pair and a trio. No rings seen.
- a pair of Tufted Duck were separately chased from cover when they strayed too close to a Coot nest.
- a pair of Coots seen with four well-grown juveniles. Most other juveniles are still being brooded on the nest at the time I visit.
- a Common Buzzard attempted to land in trees alongside squirrel alley. The local Magpies had other ideas.

Bird(s) noted flying over here:
- 1 Greylag Goose
- 1 Cormorant again

Noted on / around the water:
- 24 Canada Geese
- no Greylag Geese
- 7 Mute Swans: (assuming the resident pen hidden on the nest): see notes
- 17 (15♂) Mallard
- 2 (1♂) Tufted Duck
- 4 Moorhens again
- 18 + 4 (1 brood) Coots
- 1 Great Crested Grebe: only the bird on the nesting platform seen

Hirundines etc. noted:
None

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

Notes around the area:

Flies:
- *1 moth fly Psychodidae sp. [Drain Fly or Owl Fly]
- 2 unidentified midges

I had an extra strong coffee to improve my reaction time and managed to capture a Blue Tit leaving the nest box....

...and heading away for more insects for the brood.

A moth fly Psychodidae sp. with, as normal, matching patterns on each wing.

(Ed Wilson)

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2010
Priorslee Lake
1 Wheatear
1 Common Sandpiper
(John Isherwood)

Nedge Hill
6 Wheatear
(John Isherwood)

2008
Priorslee Lake
Spotted Flycatcher
5 Black Terns
(Ed Wilson)

Nedge Hill
2 Wheatears
3 Ravens
(Ed Wilson)

2006
Priorslee Lake
2 Ruddy Duck
(Ed Wilson)

7 May 26

Priorslee Balancing Lake and The Flash

6.0°C > 8.0°C: Cloudy. Once again brighter-looking to the East. Light / moderate south-easterly breeze. Very good visibility.

Sunrise: 05:27 BST

* = a species photographed today
$ = a new species for me in this area

Priorslee Balancing Lake: 05:20 – 06:30 // 07:25 – 09:45

(109th visit of the year)

Bird notes:
- all seven Greylag Geese goslings present and correct.
- no Mallard ducklings seen.
- *after a respite yesterday it was back to chasing a lone female for many of the Tufted Duck – eleven drakes involved! Another pair remained well away from the action.
- I confirmed seven Great Crested Grebes today.
- all the gulls seen today were fly-overs again with one group of two Herring Gulls with eight Lesser Black-backed Gulls heading East.
- more changes in the warblers:
no Sedge Warblers heard.
two Garden Warbler singing: one near its traditional nesting area in the tallest bushes alongside the M54; the other in the copse beside the sailing club HQ. Neither was seen.
- at c.05:30 I thought I heard a snatch of a Lesser Whitethroat song from beside the (very noisy) M54. Nothing was heard later.
Only two singing Common Whitethroats noted: yesterday's third at the West end alongside the footpath was not noted.

Bird(s) noted flying over here:
- 4 Canada Geese: a pair flew East and a pair flew North
- 4 Greylag Geese: a pair flew South again and a pair flew East
- 2 Herring Gulls
- 12 Lesser Black-backed Gulls
- 1 Cormorant
- 1 Feral Pigeon
- 3 Stock Doves: a pair and a single
- 4 Wood Pigeons

Counts from the lake area:
- 4 Canada Geese: one pair throughout: another pair arrived and were presumed to have been the pair that departed
- 2 + 7 (1 brood) Greylag Geese
- 2 Mute Swans
- 7 (6♂) Mallard
- *14 (12♂) Tufted Duck: see notes
- 3 Moorhens
- 17 Coots only
- 7 Great Crested Grebes
- 1 Grey Heron: departed

Hirundines etc. noted:
Minimum numbers as birds swirled around
- *10 Swifts
- *20 Sand Martins
- *25 Barn Swallows
- 4 House Martins

Warblers noted (the number in brackets refers to birds singing):
- 18 (16) Chiffchaffs
- no Sedge Warblers
- 7 (7) Reed Warblers again
- 15 (13) Blackcaps
- 1 (1)? Lesser Whitethroat: see notes
- 2 (2) Common Whitethroats
- 2 (2) Garden Warblers: see notes

On the West end street lamp poles post-dawn:
Once again very disappointing:

Flies:
- *1 unidentified midge.

Noted around the area later:
Very little in the overcast conditions with temperatures below the magic 10°C

Flies:
- *probable Spotted Cranefly Nephrotoma appendiculata
- *female cranefly Tipula lunata

Plants:
- *probable Rapeseed Brassica napus [rape; oilseed rape]
- *Ribwort Plantain Plantago lanceolata
- *Common or Stinging Nettle Urtica dioica

Yet another morning when it was clearer to the East. No clearance arrived today.

Eleven drake and one duck Tufted Duck all together on the surface. The duck is none too easy to spot: behind the sixth drake from the left.

And again: here the duck is fourth from the left. And added bonus: two Sand Martins in the distance.

And talk about Sand Martins and one comes along.

If this were sharp it would be amazing. A Sand Martin twisting with its mouth wide open to catch and insect. Hey ho!

A speeding Swift has a very distinctive shape.

Three of the twenty-five or so Barn Swallows in crowded airspace.

One in reflective mood.

The best of a generally uninspiring set of photos.

Another "pity it is not sharp" photo: this Barn Swallow is concentrating hard on the insect on the water...

 ...and flying away with the insect in its bill.

Most Robins are too busy on nesting duty to pose for the camera. This one taking time off.

A distinctive-looking cranefly. It is probably a Spotted Cranefly Nephrotoma appendiculata though to be 100% sure I would have needed to see the markings on the abdomen. This species has an almost unbroken and thick black line down the abdomen: the similar Tiger Cranefly N. flavescens has, a thin, broken black line down its abdomen. Spotted Cranefly is the most abundant of the two species in April and May.

Another distinctive-looking cranefly: it is a female (the ovipositor) Tipula lunata.

Another morning with "just the one" on the street lamp poles around dawn. This time a common-enough midge species for which I have never been able to find an ID.

These are probably flowers of Rapeseed Brassica napus or a similar brassica cultivar that has escaped from the fields across Castle Farm Way.

The "flowers" of Ribwort Plantain Plantago lanceolata.

And, such as they are, the flower clusters of Common or Stinging Nettle Urtica dioica.

(Ed Wilson)

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Noted in the Priorslee Avenue tunnel:

Flies:
- 11 midges of at least two species
- *2 moth flies Psychodidae sp. [Drain Fly or Owl Fly]
- 1 unidentified cranefly

One of the moth flies Psychodidae sp. in the tunnel shows, unusually. a different pattern on each wing. The pattern is irrelevant in identifying which of the 100 or so species any individual belongs to so this is not useful. I have never noted any such discrepancy previously.

(Ed Wilson)

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The Flash: 06:35 – 07:20

(106th visit of the year)

Neither of yesterday's additional species here, were noted today.

Bird notes:
- still five visiting Mute Swans with the resident cob giving occasional half-hearted chase.
- no Tufted Duck for the second day.
- *I noted one of the recently erected nest boxes was in use by a pair of Blue Tits.

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

Noted on / around the water:
- 13 Canada Geese
- 5 Greylag Geese: of these a pair arrived
- 7 Mute Swans: (assuming the resident pen hidden on the nest): see notes
- 20 (16♂) Mallard
- no Tufted Duck again
- 4 Moorhens
- 19 Coots
- 2 Great Crested Grebes

Hirundines etc. noted:
None

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

Notes around the area:

Flies:
- 2 unidentified midges

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

I need faster reactions. A Blue Tit flew in and out of this nest box twice and I was too slow to capture it on camera.

On one of the street lamp poles I noted this money spider Erigone sp.

On another pole I noticed this Long-jawed Orb-web Spider Tetragnatha sp. The "mess" behind it does not, I think, have any direct connection with the spider: as I recall it was there yesterday and the spider wasn't.

(Ed Wilson)

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2013
Nedge Hill
Yellow Wagtail
3 Wheatear
(John Isherwood)

2012
Wrekin
2 Wood Warblers
4 Pied Flycatchers
(Mike Stokes)

2011
Nedge Hill
2 Wheatear
(John Isherwood)

2008
Priorslee Lake
18 Mute Swans
(Martin Adlam)

2006
Priorslee Lake
Pair of Ruddy Ducks
(Ed Wilson)