29 Jun 25

Priorslee Balancing Lake and The Flash

17.0°C > 21.0°C: Mainly overcast with only a few breaks. Light south-westerly breeze. Excellent visibility.

Sunrise: 04:49 BST

* = a species photographed today
$ = my first sighting of the species for this year
$$ = my first ever recorded sighting of the species in the area

Priorslee Balancing Lake: 05:00 – 06:20 // 07:40 – 09:55

(159th visit of the year)

Bird notes:
- the Canada and Greylag goslings all still present and correct though the supernumerary adult Greylag Goose was chased away after at least two weeks as part the gang.
- a visiting Mute Swan arrived and was eventually chased away. Only the resident cob did the chasing.
- only three groups of Mallard ducklings seen: those of two, four and a single small duckling. The sailing club arrived early to set-up for the day and the usual loafing area for the Mallard and Coots was cleared. As a result some numbers are smaller than usual as birds sought shelter in the reeds.
- the duck Pochard present.
- a drake Tufted Duck was present early only
- the Little Grebe was heard calling again.
- *the third pair of Great Crested Grebes with juveniles seems to have four.
- a group of 12 apparent Feral Pigeons flew West at 05:15. Surely too early for Racing Pigeons. Might some of the local "roof birds" roost in nearby woods and this was a return to the estate area?
- the Garden Warblers was singing frequently again.
- more corvid confusion. Mainly about Rooks today. After 17 were noted outbound from their roost site(s) in small groups a party of 42 flew the other way at 05:30. Then at 05:40 a mixed group of 18 Jackdaws and 32 Rooks flew outbound.

Bird(s) noted flying over here:
- 12 Feral Pigeons: see notes
- 77 Wood Pigeons
- 11 Lesser Black-backed Gulls again
- 26 Jackdaws
- 98 Rooks: see notes

Counts from the lake area:
- 4 + 1 (1 brood) Canada Geese
- 3 + 3 (1 brood) Greylag Geese
- 3 Mute Swans: see notes
- 17 (?♂) + 7 (3 broods) Mallard: see notes
- 1 (0♂) Pochard
- 1 (1♂) Tufted Duck: departed
- 4 Moorhens
- 63 adult and juvenile Coots
- 1 Little Grebe: heard only
- *7 + 6 (3 broods) Great Crested Grebes: see notes
- 7 Lesser Black-backed Gulls
- 1 Grey Heron

Hirundines etc. noted:
- 2 Swifts
- 1 Barn Swallow

Warblers recorded (the figure in brackets is birds noted singing):
- 1 (1) Cetti's Warbler
- 12 (8) Chiffchaffs
- 11 (7) Reed Warblers
- 10 (7) Blackcaps
- 1 (1) Garden Warbler

Noted on the West end street lamp poles around-dawn:

Moths:
none

Spiders, harvestmen etc.:
*Bridge Orb-web Spider Larinioides sclopetarius

Noted later:
Still breezy and cloudy early on.

Butterflies:
*Small Skipper Thymelicus sylvestris
Large White Pieris brassicae
Small White Pieris rapae
Green-veined White Pieris napi
Speckled Wood Pararge aegeria
Ringlet Aphantopus hyperantus
Comma Polygonia c-album

Moths
1 Common Nettle-tap Anthophila fabriciana
3 Common Marbles Celypha lacunana
*1 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]
*$ 1 White-banded Grass-moth Crambus pascuella [was Inlaid Grass-veneer]
*$1 Pale Straw Pearl Udea lutealis
*1 Shaded Broad-bar Scotopteryx chenopodiata

Bees, wasps etc.:
*Honey Bee Apis mellifera
Red-tailed Bumblebee Bombus lapidarius
Common Carder Bee Bombus pascuorum
Buff-tailed Bumblebee Bombus terrestris
Common Wasp Paravespula vulgaris
*$$ possible social wasp Symmorphus bifasciatus
*ichneumon Amblyteles armatorius
*unidentified small ichneumon

Hoverflies:
*$$ probable Houseleek Blacklet Cheilosia caerulescens
Bumblebee Blacklet Cheilosia illustrata
Stripe-backed Fleckwing Dasysyrphus albostriatus [Stripe-backed Brusheye]
Marmalade Hoverfly Episyrphus balteatus
Tapered Dronefly Eristalis pertinax
Common Dronefly Eristalis tenax
*Migrant Field Syrph Eupeodes corollae [Migrant Hoverfly; Migrant Aphideater]
Meadow Field Syrph Eupeodes latifasciatus [Broad-banded Aphideater]
Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]
*Dead-head Hoverfly Myathropa florea [Common Batman Fly]
*Common Twist-tail Sphaerophoria scripta [Long Hoverfly; Common Globetail]
*Syrphus sp. S. ribesii / S. vitripennis

Dragon-/Damsel-flies:
Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
Blue-tailed Damselfly Ischnura elegans [Common Bluetail]
many damselflies not specifically identified

Lacewings:
none

Other flies:
Black Snipefly Chrysopilus cristatus
*Tachinid fly Eriothrix rufomaculata [Red-sided Eriothrix]
plus
as usual many unidentified flies of many different species

Bugs:
none

Beetles:
7 Spot Ladybird Coccinella 7-punctata
pupae of Harlequin Ladybird Harmonia axyridis: many
Pollen Beetle Meligethes sp.
Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]
*Spotted Longhorn Beetle Rutpela maculata [formerly Strangalia maculata]

Slugs, snails etc.:
White-lipped Snail Cepaea hortensis

Amphibians:
Common Frog Rana temporaria

Spiders, harvestmen etc.:
none

New flowers for the year:
*$$ Pale Persicaria Persicaria lapathifolia

The visiting Mute Swan. It is just possible to see that it has a blue Darvic ring on the left leg. Sadly none of the photos showed the leg clear of the water to enable me to read it.

The adult Great Crested Grebe seems to have arranged the four juveniles neatly.

A juvenile Carrion Crow. Note the slight gape line and some fluffy juvenile feathers on the flanks.

Song Thrush not banging a snail for a change. Just sitting on a fence.

Another Small Skipper butterfly Thymelicus sylvestris with its tongue in a Common Knapweed Centaurea nigra.

And here is real close-up to show we can discount it being an Essex Skipper T. lineola (which despite its name is possible here) as that species has jet-black tips to its antennae.

One of those pesky grass moths. It is a White-banded Grass-moth Crambus pascuella which used to be called Inlaid Grass-veneer. As with most grass moths they are seen flushed from the grass, fly erratically at speed and suddenly grab hold of a grass stem and collapse making them very hard to locate. Moth species #56 for me here this year.

They usually end up head-down along a grass stem as this Garden Grass-moth Chrysoteuchia culmella has done.

First sighting of this moth this year. It is a Pale Straw Pearl Udea lutealis frequently flushed from long grass. Moth species #56 for me here this year.

It was eight days ago I threatened to find a better photo of a Shaded Broad-bar Scotopteryx chenopodiata. At last!

This Honey Bee Apis mellifera is not a very "busy bee" as there is no pollen in the pollen baskets on the hind leg.

The best fit from the photos on the NatureSpot site is the social wasp Symmorphus bifasciatus.

"Leave those blackberries for later when they are ripe.. You will get tummy ache eating then unripe!" This seems to be the ichneumon Amblyteles armatorius

An unidentified small ichneumon wasp.

Sadly the insect in the foreground here will have to stay a "probable". Obsidentify was sure it is a Houseleek Blacklet Cheilosia caerulescens but I cannot get enough confirmation with the photos on Steven Falk's Flickr site to be sure - where are the white knees? This species is a recent colonist to the UK, probably brought in with a consignment of alien houseleeks (also known as "hen and chicks") originating in southern Europe. [at the back is an out-of-focus Common Red Soldier Beetle Rhagonycha fulva.]

Not new for the year however I do not spot this species of hoverfly very often. It is a Stripe-backed Fleckwing Dasysyrphus albostriatus which Obsidentify calls a Stripe-backed Brusheye. The identification features are that the yellow marks angle downwards and there are two stripes on the thorax.

Apart from being common and attractively-marked a feature of Marmalade Hoverflies Episyrphus balteatus is that they are remarkably approachable and content for the camera (or me) to be inches away from them.

The Field Syrph hoverflies can be difficult to separate. Here is a Migrant Field Syrph Eupeodes corollae (also known as Migrant Hoverfly or Migrant Aphideater) which is identified by the yellow bands extending around the sides of the abdomen.

Close-up with a Dead-head Hoverfly Myathropa florea.

Two for the price of one. I scratched my head over the small flying hoverfly. While it looked somewhat like a Common Twist-tail Sphaerophoria scripta (or Long Hoverfly) the yellow bands seemed very narrow and angled downward. Searching through Steven Falk's photos I noted several females that had very narrow bands and I think the angled effect it just because I am looking side-on. The hoverfly on the right is a Syrphus sp.. either S. ribesii / S. vitripennis.

A fly that is relatively easy to identify. It is the Tachinid fly Eriothrix rufomaculata which Obsidentify calls, with justification, Red-sided Eriothrix.

A great-looking beetle: a Spotted Longhorn Beetle Rutpela maculata.

It is a while since I saw one of these: a Bridge Orb-web Spider Larinioides sclopetarius.

A new plant for me: Pale Persicaria Persicaria lapathifolia.

(Ed Wilson)

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In the Priorslee Avenue tunnel:

Moths:
*$1 Double-striped Pug Gymnoscelis rufifasciata
1 Small Dusty Wave Idaea seriata

Flies
14 midges of various species.

Spiders, harvestmen etc.:
none

My first Double-striped Pug Gymnoscelis rufifasciata of the year. Pug moth species seem to like the tunnel: my fourth species this year none of which I have seen elsewhere. It is surprisingly the 21st species of moth I have found in the tunnel this year.

(Ed Wilson)

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The Flash: 06:25 – 07:35

(157th visit of the year)

Bird notes:
- just three adult Mute Swans noted.
- yesterday's late brood of three Mallard ducklings not seen.
- 11 Tufted Duck: seven drakes though it is getting hard to tell as they moult.
- fewer Coots counted. For some reason there was no gathering alongside the eastern edge of the island today and those I did find were scattered around.
- at least four and possibly five Great Crested Grebes. Singles sitting on nests at the top end and alongside the island. Singles seen in the water close-by to each nest site. One seen elsewhere may have been one of these – I could never see all five at the same time.
- two adult Cormorants flew in together and stayed in the water only a few minutes before departing. Too much weed?

Bird(s) noted flying over here:
- 13 Jackdaws

Noted on / around the water:
- 179 Canada Geese
- 36 Greylag Geese
- 1 mainly white feral goose
- 3 Mute Swans
- 24 (?♂)Mallard
- 11 (7♂) Tufted Duck
- 8 + 2 (1 brood) Moorhens
- 38 + 9 (3 broods) Coots
- 4 (5?) Great Crested Grebes: see notes
- 2 Cormorants: arrived and departed together

Hirundines etc. noted:

None

Warblers recorded (the figure in brackets is birds noted singing):
- 4 (4) Chiffchaffs
- 5 (5) Blackcaps again

Noted around the area:

Butterflies:
Green-veined White Pieris napi

Moths [on street lamp poles and in the grass]
1 Common Nettle-tap Anthophila fabriciana
4 Common Marbles Celypha lacunana
3 Garden Grass-moths Chrysoteuchia culmella [was Garden Grass-veneer]
*1 Mottled Beauty Alcis repandata

Bees, wasps etc.:
Common Carder Bee Bombus pascuorum
Buff-tailed Bumblebee Bombus terrestris
Common Wasp Paravespula vulgaris

Hoverflies:
Marmalade Hoverfly Episyrphus balteatus

Dragon-/Damsel-flies:
none

Other flies:
numerous different midges and flies

Bugs:
*$ instar of Common Green Shieldbug Palomena prasina

Beetles:
larvae of Alder Leaf Beetle Agelastica alni
pupae of Harlequin Ladybird Harmonia axyridis
Rough-haired Lagria Beetle Lagria hirta
Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]

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

New flowers for the year:
None

This somewhat worn Mottled Beauty moth Alcis repandata was resting on vegetation and asking to be eaten. I saw it first. My 42nd moth species around The Flash in 2025.

A distinctive-looking fly. Obsidentify was clear it was a Muscid fly. A search of the photo galleries in NatureSpot and eakringbirds failed to come up with an identity.

An early instar of a Common Green Shieldbug Palomena prasina . That is a grass "flower" it is resting on to give some idea of scale. It is the first instar or adult of this usually common species that I have seen this year.

(Ed Wilson)

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2013
Priorslee Lake
15 Cormorants
(Ed Wilson)

2011
Priorslee Lake
Common Sandpiper
(Ed Wilson)

2010
Priorslee Lake
Juvenile Yellow Wagtail
(Ed Wilson)

2009
Priorslee Lake
Siskin
(Ed Wilson)

2006
Priorslee Lake
2 drake Ruddy Ducks
(Ed Wilson)

28 Jun 25

Priorslee Balancing Lake and The Flash

19.0°C > 21.0°C: A mainly overcast start with some sunny breaks developing. Moderate south-westerly breeze gusting fresh at times. Excellent visibility.

Sunrise: 04:49 BST

* = a species photographed today
$ = my first sighting of the species for this year
$$ = my first ever recorded sighting of the species in the area

Priorslee Balancing Lake: 05:00 – 06:25 // 07:40 – 09:40

(158th visit of the year)

Bird notes
*Highlight today was hearing and then seeing Marsh Tit(s) near the Teece Drive gate just as I was leaving. Not new for the year but any record of this much-declined species is noteworthy.

Other bird notes:
- the Canada and Greylag goslings all still present and correct.
- both resident Mute Swans were together occasionally. Mostly only the resident cob visible.
- the same four groups of Mallard ducklings seen: in descending size of the ducklings in each brood these comprised eleven, two, four and a single small duckling.
- the duck Pochard present.
- the Little Grebe not heard.
- I did not see whether the latest pair of Great Crested Grebes still had any juvenile(s). Unless I had seen the other parent arrive with food they would have been hidden on the parent's back.
- a Great White Egret was present at c.05:30. At c.06:30 it was presumably this bird that was in the lower pool between the lake and The Flash. A later report of a "large white bird with a long bill" walking up Castle Farm Way and disrupting the traffic was no doubt this bird though what it was doing and where it went is unknown. I did not see it at The Flash today.
- the Garden Warblers was singing frequently again. Another heard calling.
- no Common Whitethroat seen or heard again.
- different corvid confusion. Just 17 Jackdaws were noted flying South out of their roost site(s) before at 05:40 a party of 52 flew North. A few singles later. Just six Rooks noted.
- one of three parties of Long-tailed Tits contained at least 18 individuals.

Bird(s) noted flying over here:
- 50 Wood Pigeons
- 11 Lesser Black-backed Gulls
- 73 Jackdaws: see notes
- 6 Rooks

Counts from the lake area:
- 4 + 1 (1 brood) Canada Geese
- 3 + 3 (1 brood) Greylag Geese
- 2 Mute Swans
- 23 (?♂) + 18 (4 broods) Mallard: see notes
- 1 (0♂) Pochard
- 1 Moorhen only again
- 74 adult and juvenile Coots
- no Little Grebe
- 7 + 2 (2 broods) Great Crested Grebes: see notes
- 14 Lesser Black-backed Gulls
- 1 Grey Heron
- 1 Great Egret: see n0tes

Hirundines etc. noted:
- 6 Swifts
- 1 Barn Swallow

Warblers recorded (the figure in brackets is birds noted singing):
- 1 (1) Cetti's Warbler
- 12 (9) Chiffchaffs
- 9 (7) Reed Warblers
- 6 (6) Blackcaps
- 2 (1) Garden Warbler
- no Common Whitethroat

Noted on the West end street lamp poles around-dawn:

Moths:
*1 Bird-cherry Ermine Yponomeuta evonymella

Noted later:
Still breezy and cloudy early on.

Butterflies:
*$ Small Skipper Thymelicus sylvestris
Large White Pieris brassicae
Green-veined White Pieris napi
many unidentified "whites"
Ringlet Aphantopus hyperantus
*Meadow Brown Maniola jurtina
*Red Admiral Vanessa atalanta
Comma Polygonia c-album

Moths
1 Common Nettle-tap Anthophila fabriciana
1 Common Marble Celypha lacunana
*1 Garden Grass-moth Chrysoteuchia culmella [was Garden Grass-veneer]

Bees, wasps etc.:
*Honey Bee Apis mellifera
Red-tailed Bumblebee Bombus lapidarius
Common Carder Bee Bombus pascuorum
Buff-tailed Bumblebee Bombus terrestris
Common Wasp Paravespula vulgaris

Hoverflies:
Bumblebee Blacklet Cheilosia illustrata
*Marmalade Hoverfly Episyrphus balteatus
*Tapered Dronefly Eristalis pertinax
Common Dronefly Eristalis tenax
Meadow Field Syrph Eupeodes latifasciatus [Broad-banded Aphideater]
Common Spotted Field Syrph Eupeodes luniger [Lunuled Aphideater]
Chequered Hoverfly Melanostoma scalare [Long-winged Duskyface]
Dead-head Hoverfly Myathropa florea [Common Batman Fly]
Common Twist-tail Sphaerophoria scripta [Long Hoverfly; Common Globetail]
Syrphus sp. S. ribesii / S. vitripennis

Dragon-/Damsel-flies:
Common Blue Damselfly Enallagma cyathigerum [Common Bluet]
many damselflies not specifically identified
Brown Hawker Aeshna grandis
a different hawker sp. seen in flight only

Lacewings:
none

Other flies:
*root-maggot fly Anthomyia procellaris
*$ fungus gnat Sciara sp.
Common Crane-fly Tipula oleracea
plus
as usual many unidentified flies of many different species

Bugs:
none

Beetles:
7 Spot Ladybird Coccinella 7-punctata
pupae of Harlequin Ladybird Harmonia axyridis: many
Harlequin Ladybird Harmonia axyridis var. succinea: adult
Pollen Beetle Meligethes sp.
*Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]

Slugs, snails etc.:
White-lipped Snail Cepaea hortensis

Spiders, harvestmen etc.:
none

New flowers for the year:

None

Trying to hide from the camera is...

..a Marsh Tit. Separation from Willow Tit is best done by sound (calls, song). There is a theory that Marsh Tits show a pale spot at the base of the upper mandible – as here, though that could well be a feather sticking forward? Good luck seeing that in the field!

The shape of the black bib differs between species but again it is difficult to be sure when faced with a single bird – alongside it would be easy but generally they like different habitats and would not be seen together.

A good year for this moth species: another Bird-cherry Ermine Yponomeuta evonymella.

Looking rather worse for wear is this Garden Grass-moth Chrysoteuchia culmella.

My first Small Skipper butterfly Thymelicus sylvestris of the year. Separate from Large Skipper Ochlodes sylvanus by the near border to the forewing. Size is essentially irrelevant and the names therefore misleading.

A tongue like a coiled spring!

Did I mention looking worse for wear? How about this Meadow Brown Maniola jurtina?

This is what they are supposed to look like.

A Red Admiral butterfly Vanessa atalanta and I remembered to reset the camera's mode, I usually shoot using "sports mode" but that setting renders red colours very washed out.

A Honey Bee Apis mellifera tucks in.

By far the most abundant hoverfly species at the moment is the Marmalade Hoverfly Episyrphus balteatus.

A male Tapered Dronefly Eristalis pertinax takes off.

This neatly marked fly is the root-maggot fly Anthomyia procellaris.

The orange underside indicates this is a fungus gnat of the Sciara species group. These cannot be specifically identified from photos.

A Common Red Soldier Beetle Rhagonycha fulva is so engrossed in feeding in the Common Knapweed Centaurea nigra that it is exposing more of its abdomen than usual.

Three is a crowd but at least this means the striped underside of the abdomen is visible.

(Ed Wilson)

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In the Priorslee Avenue tunnel:

Moths:
*1 Riband Wave Idaea aversata

Flies
10 midges of various species.

Spiders, harvestmen etc.:
none

A Riband Wave moth Idaea aversata.

(Ed Wilson)

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The Flash: 06:30 – 07:35

(156th visit of the year)

Bird notes:
- all six adult Mute Swans noted.
- *a late brood of just three Mallard ducklings
- no Tufted Duck seen.
- three Great Crested Grebe noted. Two separately around the island. The third tucked up under overhanging trees at the north: could it be nesting there?
- the Great (White) Egret not seen.

Bird(s) noted flying over here:
- 1 Lesser Black-backed Gull
- 3 Jackdaws

Noted on / around the water:
- 164 Canada Geese
- 39 Greylag Geese
- 1 mainly white feral goose
- 6 Mute Swans
- *19 (?♂) + 3 (1 brood) Mallard
- no Tufted Duck
- 8 + 3 (2 broods) Moorhens
- 56 + 11 (5 broods) Coots
- 3 Great Crested Grebes

Hirundines etc. noted:
- 1 Swift

Warblers recorded (the figure in brackets is birds noted singing):
- 5 (5) Chiffchaffs
- 5 (5) Blackcaps

Noted around the area:
sunny spells

Butterflies:
Green-veined White Pieris napi
Ringlet Aphantopus hyperantus
Meadow Brown Maniola jurtina

Moths [on street lamp poles and in the grass]
1 Leopard Moth Zeuzera pyrina: as yesterday
1 Common Marble Celypha lacunana
*$ 1 Double Orange-spot Pammene aurana [was Orange-spot Piercer]
3 Garden Grass-moths Chrysoteuchia culmella [was Garden Grass-veneer]
*1 Common Grey Scoparia ambigualis

Bees, wasps etc.:
Honey Bee Apis mellifera
Common Carder Bee Bombus pascuorum
Buff-tailed Bumblebee Bombus terrestris
Common Wasp Paravespula vulgaris
*$ male Ichneumon xanthorius

Hoverflies:
Marmalade Hoverfly Episyrphus balteatus
Common Dronefly Eristalis tenax
Meadow Field Syrph Eupeodes latifasciatus [Broad-banded Aphideater]
Syrphus sp. S. ribesii / S. vitripennis

Dragon-/Damsel-flies:
Common Blue Damselfly Enallagma cyathigerum [Common Bluet]

Other flies:
*$$ Notch-horned Cleg Haematopota pluvialis [Common Horse Fly]
also numerous different midges and flies

Bugs:
none

Beetles:
larvae of Alder Leaf Beetle Agelastica alni
larva and pupae of Harlequin Ladybird Harmonia axyridis: another late larva?
Harlequin Ladybird Harmonia axyridis var. succinea: adult
*Rough-haired Lagria Beetle Lagria hirta
*female Swollen-thighed Beetle Oedemera nobilis [False Oil Beetle or Thick-legged Flower Beetle]
*Common Red Soldier Beetle Rhagonycha fulva [Hogweed Bonking-beetle]

Spiders, harvestmen etc.:
*male harvestman Leiobunum blackwalli

New flowers for the year:

None

Mrs. Mallard with a late brood of three ducklings.

My first Double Orange-spot moth Pammene aurana this year. Micro-moths names seem to have been standardised and many have change. This used to be called Orange-spot Piercer.

A Common Grey moth Scoparia ambigualis. These like to rest on lichen covered surfaces where they can be very hard to see – this is a street lamp pole.

What a splendid-looking creature: it is a male Ichneumon xanthorius. Females have some yellow in the antennae and the yellow pattern on the abdomen differs.

If I have this correct this is a new species of fly for me – a Notch-horned Cleg Haematopota pluvialis, called by Obsidentify a Common Horse Fly. It seems to be the patterning in the wings that leads to the identification, supported by the prominent antennae.

I found this Rough-haired Lagria Beetle Lagria hirta.

A female Swollen-thighed Beetle Oedemera nobilis identified by the way the elytra are held partially open. It is only the males that have the swollen thighs.

A Common Red Soldier Beetle Rhagonycha fulva making do with Common Knapweed Centaurea nigra rather than the usual Common Hogweed Heracleum sphondylium.

A male harvestman Leiobunum blackwalli. I am still not entirely sure I should be seeing so many harvestmen in June, global warming notwithstanding.

(Ed Wilson)

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Between the Balancing Lake and The Flash:

Of note:

As reported under the entry for the Balancing Lake the Great White Egret was in the lower pool as I was walking toward The Flash but not upon my return.

(Ed Wilson)

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2009
Priorslee Lake
Yellow Wagtail
(Ed Wilson)

2006
Priorslee Lake
Common Tern
(Ed Wilson)