13.0°C > 18.0°C: Early cloud produced a very light shower c.06:00 before clearing to good sunny periods. Clouded again after 09:15. Light, becoming moderate mainly southerly breeze. Very good visibility.
Sunrise: 04:50 BST
* = a species photographed today
! = a first sighting of the species this year
$ = a new species for me in this area
Priorslee Balancing Lake: 04:45– 06:00 // 07:15 – 09:45
(150th visit of the year)
Bird notes:
- the seven Greylag Geese goslings with two extra adults present.
- yesterday's new brood of two Mallard ducklings now down to just one.
- six adult Great Crested Grebes with two trios of juveniles.
- probably the same adult Black-headed Gull appeared and disappeared several times.
- less early breeze meant fewer Swifts early: about 15. Again not so many later.
- the warbler update:
three of the Reed Warblers were singing from outside the reeds. I still did not manage to see any of them.
I did not hear the Garden Warbler possibly because I did not go close to that area this morning.
both the Common Whitethroats at the West end and along the South side were singing, the former persistently.
Bird(s) noted flying over here:
- 83 Wood Pigeons
- 22 Jackdaws
- 5 Rooks
That's all
Counts from the lake area:
- 4 + 7 (1 brood) Greylag Geese
- 2 Mute Swans
- 30 (?♂) + 1 (1 brood) Mallard
- 2 Moorhens
- 53 Coots: of these at least six were obvious juveniles from four broods
- 6 + 6 (2 broods) Great Crested Grebes: as yesterday
- 1 Black-headed Gull
1 Grey Heron: early only again
Hirundines etc. noted:
- c.15 Swifts
- 2 House Martin
Warblers noted (the number in brackets refers to birds singing):
- 11 (10) Chiffchaffs
- 111 (11) Reed Warblers
- 10 (8) Blackcaps
- no Garden Warbler
- 2 (2) Common Whitethroats
Also noted:
Many butterflies while to sun was out. Otherwise disappointing
Butterflies:
- *1 ! Essex Skipper Thymelicus lineola
- *18 Small Skipper-type Thymelicus sylvestris: by far my largest ever count of this species here. A few of these may also have been Essex Skippers: not all could be checked in detail.
- *4 Large Skipper Ochlodes sylvanus
- *1 ! Small White Pieris rapae
- 4 Green-veined White Pieris napi
- 10+ unidentified "whites"
- 1 Speckled Wood Pararge aegeria
- 17+ Ringlet Aphantopus hyperantus
- 3 Meadow Brown Maniola jurtina
- *7 ! Gatekeeper Pyronia tithonus
- 2 Red Admiral Vanessa atalanta
- *1 ! Essex Skipper Thymelicus lineola
- *18 Small Skipper-type Thymelicus sylvestris: by far my largest ever count of this species here. A few of these may also have been Essex Skippers: not all could be checked in detail.
- *4 Large Skipper Ochlodes sylvanus
- *1 ! Small White Pieris rapae
- 4 Green-veined White Pieris napi
- 10+ unidentified "whites"
- 1 Speckled Wood Pararge aegeria
- 17+ Ringlet Aphantopus hyperantus
- 3 Meadow Brown Maniola jurtina
- *7 ! Gatekeeper Pyronia tithonus
- 2 Red Admiral Vanessa atalanta
Moths:
In the sunny conditions most flushed moths disappeared in to the far distance
In the sunny conditions most flushed moths disappeared in to the far distance
- *1 ! Common Knapweed Tortrix Eucosma hohenwartiana [was Bright Bell]
- 5 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
- 5 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
Bees, wasps etc.:
- Honey Bee Apis mellifera
- Red-tailed Bumblebee Bombus lapidarius
- Buff-tailed Bumblebee Bombus terrestris
- *ichneumon wasp Amblyteles armatorius
- Honey Bee Apis mellifera
- Red-tailed Bumblebee Bombus lapidarius
- Buff-tailed Bumblebee Bombus terrestris
- *ichneumon wasp Amblyteles armatorius
Hoverflies:
- *Bumblebee Blacklet Cheilosia illustrata
- Marmalade Hoverfly Episyrphus balteatus
- *! Furry Dronefly Eristalis intricaria
- Common Dronefly Eristalis tenax
- Migrant Field Syrph Eupeodes corollae [Migrant Hoverfly; Migrant Aphideater]
- *Common Spotted Field Syrph Eupeodes luniger [Lunuled Aphideater]
- *Common Twist-tail Sphaerophoria scripta [Long Hoverfly; Common Globetail]
- Syrphus sp. S. ribesii / S. vitripennis / S. torvus
- *Bumblebee Blacklet Cheilosia illustrata
- Marmalade Hoverfly Episyrphus balteatus
- *! Furry Dronefly Eristalis intricaria
- Common Dronefly Eristalis tenax
- Migrant Field Syrph Eupeodes corollae [Migrant Hoverfly; Migrant Aphideater]
- *Common Spotted Field Syrph Eupeodes luniger [Lunuled Aphideater]
- *Common Twist-tail Sphaerophoria scripta [Long Hoverfly; Common Globetail]
- Syrphus sp. S. ribesii / S. vitripennis / S. torvus
Damsel / Dragon-flies:
Again most damselflies not checked. I am sure there are Azure Damselflies Coenagrion puella somewhere!
- Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
- Blue-tailed Damselfly Ischnura elegans [Common Bluetail]
- *Black-tailed Skimmer Orthetrum cancellatum
- mating pair of Common Darter Sympetrum striolatum
At least two other species of large dragonfly seen in flight only/
Again most damselflies not checked. I am sure there are Azure Damselflies Coenagrion puella somewhere!
- Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
- Blue-tailed Damselfly Ischnura elegans [Common Bluetail]
- *Black-tailed Skimmer Orthetrum cancellatum
- mating pair of Common Darter Sympetrum striolatum
At least two other species of large dragonfly seen in flight only/
Lacewings and other four-winged flies:
- *Common Green Lacewing Chrysoperia carnea
- *Common Green Lacewing Chrysoperia carnea
True flies:
a few including...
- Black Snipefly Chrysopilus cristatus
- greenbottle Lucilia sp.
- *semaphore fly Poecilobothrus nobilitatus
- * $ rust fly, possibly Psila fimetaria
- *flesh fly Sarcophaga sp., possibly S. carnaria
other unidentified flies
a few including...
- Black Snipefly Chrysopilus cristatus
- greenbottle Lucilia sp.
- *semaphore fly Poecilobothrus nobilitatus
- * $ rust fly, possibly Psila fimetaria
- *flesh fly Sarcophaga sp., possibly S. carnaria
other unidentified flies
Bugs:
none
none
Beetles:
- *Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]
- *Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]
Spiders, harvestmen etc.:
- *male harvestman Leiobunum rotundum
On the West end street lamp poles around dawn:
Another blank morning
- *male harvestman Leiobunum rotundum
On the West end street lamp poles around dawn:
Another blank morning
The first skipper butterfly I photographed this morning turned out to be an Essex Skipper Thymelicus lineola. Like a Small Skipper T. sylvestris but with the tip of the antennae wholly black.
Here is a Small Skipper.
My: what a long tongue you have. Another Small Skipper.
My first Gatekeeper butterflies Pyronia tithonus of the year appeared this morning: at least seven. A similar colour to Meadow Brown Maniola jurtina but smaller and crucially it has two white dots in the dark circle in the wing. The Meadow Brown only has one. This is a male, identified by the shading in the centre of the forewing.
A micromoth I see most years: a Common Knapweed Tortrix Eucosma hohenwartiana.
For the third consecutive day I have seen an ichneumon wasp Amblyteles armatorius.
Not a hoverfly I see too often: this is a Furry Dronefly Eristalis intricaria...
...and from this angle shows the typical brown marks of the genus at the top of the abdomen.
A male Common Twist-tail Sphaerophoria scripta. This species is most easily spotted by the obvious yellow scutellum (the half-moon shaped area behind the thorax) and the yellow antennae.
Trying to be camouflaged is a Black-tailed Skimmer dragonfly Orthetrum cancellatum
A well-posed male semaphore fly Poecilobothrus nobilitatus.
(Ed Wilson)
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In the Priorslee Avenue tunnel:
On my return through the tunnel council workers were painting the wall to obliterate the often obscene scribblings of the mindless.
Moths:
- 1 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
- *1 Common Grey Scoparia ambigualis
- *2 Small Fan-footed Wave Idaea biselata
- *1 Riband Wave Idaea aversata nominate form aversata
- 1 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
- *1 Common Grey Scoparia ambigualis
- *2 Small Fan-footed Wave Idaea biselata
- *1 Riband Wave Idaea aversata nominate form aversata
Flies:
- 8 midges of several species
- 2 moth fly Psychodidae sp. [Drain Fly or Owl Fly]
- *1 cranefly Nephrotoma quadrifaria
- 8 midges of several species
- 2 moth fly Psychodidae sp. [Drain Fly or Owl Fly]
- *1 cranefly Nephrotoma quadrifaria
Warming its feet on one of the strip-lighting covers was this Common Grey moth Scoparia ambigualis
The combination of abdomen and wing markings identify this as the cranefly Nephrotoma quadrifaria.
(Ed Wilson)
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The Flash: 06:05 – 07:10
(147th visit of the year)
The path across the bridges still firmly shut.
Bird notes:
- counting the geese was, as always a challenge. With the footbridges closed some had decided to go in to the cut-offs where they were hard to see.
- I think ten Mute Swans. There were eight on the open water and probably two seen around the island at different times. At least neither of these seemed be slumped down as I suspected the previous two days.
- I did not see the duck Mallard with her partly-grown ducklings. *I noted a small group of fully grown birds keeping close-company and all with duck(female)-like plumage suggesting they might be from the same brood. If so where have they come from? Are they able to fly? Some Mallard certainly can and do fly as a very few still appear on roof-tops,
- a small arrival of Tufted Duck. I am not attempting to sex all of them as they go through their moult.
- *Coots have begun their usual post-breeding gathering along the East side of the island, all bunched up (no more testosterone) and hard to count.
- no Great Crested Grebe seen.
- a Grey Heron was on the edge of the island again.
Bird(s) noted flying over here:
- 1 Lesser Black-backed Gull
- 6 Jackdaws
Noted on / around the water:
- 176 + 1 (1 brood) Canada Geese
- 116 Greylag Geese
- 10? Mute Swans: see notes
- *19 (?♂) Mallard
- 12 (?♂) Tufted Duck
- 4 Moorhens
- *48 adult and immature Coots: eight of these juveniles from six late broods
- no Great Crested Grebes
- 1 Grey Heron
Hirundines etc. noted:
These appeared overhead as the light shower faded away and were seen no more.
- 3 Swifts
- 3 House Martins
Warblers noted (the number in brackets refers to birds singing):
- 2 (2) Chiffchaffs
- 5 (4) Blackcaps
Noted around the area:
Conditions were poor at the time I was here.
Moths:
- 2 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
- *1 Riband Wave Idaea aversata form remutata
- 1 Small Fan-footed Wave Idaea biselata
- *1 Swallow Prominent Pheosia tremula
- 2 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
- *1 Riband Wave Idaea aversata form remutata
- 1 Small Fan-footed Wave Idaea biselata
- *1 Swallow Prominent Pheosia tremula
Bees, wasps etc.:
none
none
Hoverflies:
none
none
Other flies:
- 1 larva of a mayfly Caenis sp. If the same as yesterday it had moved several feet up the street lamp pole.
- 1 Black Snipefly Chrysopilus cristatus
- 1 larva of a mayfly Caenis sp. If the same as yesterday it had moved several feet up the street lamp pole.
- 1 Black Snipefly Chrysopilus cristatus
Beetles:
- 1 Rough-haired Lagria Beetle Lagria hirta
- 1 Rough-haired Lagria Beetle Lagria hirta
Spiders, harvestmen etc.:
- 1 Long-jawed Orb-web Spider Tetragnatha sp.
This group of four Mallard were keeping close together and may well be siblings. If so I did not see them growing up from ducklings. Of the right hand trio the back two have pale bills suggesting they will moult in to drakes; the other the pale-edged bill of a duck. I am not sure about the left-most bird. None of them looks to have flight feathers.
At the end of the breeding season Coots congregate on the East side of the island – as here. I make it 19 (and one Mute Swan, likely the resident pen).
I found this Swallow Prominent moth Pheosia tremula where I see a few every year: on one or other of the two street lamp poles in the wooded area top left. This species is bivoltine (it has two generations each year). Since I saw one at the Balancing Lake in April this must be from a second generation specimen.
(Ed Wilson)
2010
Priorslee Lake
Common Sandpiper
(Ed Wilson)
2006
Priorslee Lake
1 drake Ruddy Duck
(Ed Wilson)
- 1 Long-jawed Orb-web Spider Tetragnatha sp.
This group of four Mallard were keeping close together and may well be siblings. If so I did not see them growing up from ducklings. Of the right hand trio the back two have pale bills suggesting they will moult in to drakes; the other the pale-edged bill of a duck. I am not sure about the left-most bird. None of them looks to have flight feathers.
(Ed Wilson)
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2010
Priorslee Lake
Common Sandpiper
(Ed Wilson)
2006
Priorslee Lake
1 drake Ruddy Duck
(Ed Wilson)
























































