| 28/04/24 | Black-headed Gull | College Lake | 106 | L Evans |
15:50
| A fraction of the number that were once within this breeding colony with around 35 active nests including one on the artificial raft. |
| 28/04/24 | Black-headed Gull | Foxcote Res | 22 | P Gomersall |
10:05
| ad. Around rafts. |
| 28/04/24 | Black-headed Gull | Foxcote Res | 21 | R S Hill |
09:00
| Signs of breeding activity on the rafts. |
| 27/04/24 | Black-headed Gull | Foxcote Res | 18 | L Evans |
11:49
| Just 5 pairs occupying the rafts but no sign of actual nesting; Paul's earlier Little Gulls had moved on. |
| 27/04/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 8 | C Shepherd |
09:00
| |
| 27/04/24 | Black-headed Gull | Calvert BBOWT Lake, Calvert | 10 | P Watts |
08:59
| |
| 27/04/24 | Black-headed Gull | Flackwell Heath | 2 | L P Quy |
08:09
| SU902898. |
| 27/04/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 4 | M Haberfield |
05:45
| |
| 27/04/24 | Black-headed Gull | Willen Lake South, Willen Lakes | 1 | S Nichols |
05:27
| |
| 22/04/24 | Black-headed Gull | Chalfont St Giles | 110 | M Milne |
18:32
| C.110 counted in flooded field at pin drop. SU987942. |
| 26/04/24 | Black-headed Gull | College Lake | 64 | A C Bayliss |
| Still a very small colony compared to previous years. A few pairs now on scrapes. |
| 25/04/24 | Black-headed Gull | Foxcote Res | 7 | P Gibbs |
13:23
| A couple of birds sat on rafts, but no apparent breeding behaviour. |
| 24/04/24 | Black-headed Gull | Little Marlow GP | 1 | G Smith |
10:31
| |
| 23/04/24 | Black-headed Gull | Foxcote Res | 12 | P Gibbs |
11:47
| 2 on a raft. |
| 22/04/24 | Black-headed Gull | Chalfont St Giles | 51 | L Evans |
17:40
| |
| 22/04/24 | Black-headed Gull | Chalfont St Giles | 1 | L P Quy |
17:28
| Lots. SU989943. |
| 20/04/24 | Black-headed Gull | Fulmer Lake, Fulmer | 1 | M Milne |
09:45
| |
| 14/04/24 | Black-headed Gull | Fulmer Lake, Fulmer | 9 | M Milne |
09:30
| |
| 20/04/24 | Black-headed Gull | College Lake | 52 | A C Bayliss |
| Small colony on the east island looking more settled. Starting to defend the territory and a few look like they are on scrapes. |
| 18/04/24 | Black-headed Gull | Amersham Flood Meadows | 48 | L Evans |
07:00
| Still lingering on the floods. |
| 18/04/24 | Black-headed Gull | Foxcote Res | 1 | P Gomersall |
10:20
| ad. Flew over. |
| 18/04/24 | Black-headed Gull | Little Marlow - Emmetts Fields | 4 | L P Quy |
08:35
| |
| 17/04/24 | Black-headed Gull | Amersham Flood Meadows | 80 | J N Sweeney |
17:30
| |
| 16/04/24 | Black-headed Gull | Tattenhoe Park, Milton Keynes | 3 | H Appleyard |
| Trio flying to the west. |
| 16/04/24 | Black-headed Gull | Foxcote Res | 2 | P Gomersall |
10:45
| ad. On plastic raft. |
| 16/04/24 | Black-headed Gull | Foxcote Res | 1 | P Gibbs |
10:08
 | Zero present, and rafts empty. Very strange as there were 180+ last week, with nestbuilding taking place. |
| 13/04/24 | Black-headed Gull | College Lake | 20 | A C Bayliss |
| A few BHGs on the east island looking like they might nest there. Previous years would have seen hundreds of birds. It looks like the bird flu of last year had a long lasting impact. |
| 13/04/24 | Black-headed Gull | Hulcott | 5 | M Wallen |
09:30
| On rapidly drying flood. |
| 11/04/24 | Black-headed Gull | Amersham Flood Meadows | 48 | L Evans |
18:30
| |
| 10/04/24 | Black-headed Gull | Foxcote Res | 52 | J Rowley |
12:00
| Either on dam or squabbling over space on rafts. |
| 09/04/24 | Black-headed Gull | Foxcote Res | 92 | R S Hill |
10:00
| |
| 08/04/24 | Black-headed Gull | Dorney Common, Dorney | 18 | D L Cleal |
15:05
| |
| 08/04/24 | Black-headed Gull | Calvert Sailing Lake, Calvert | 41 | T Watts |
14:48
| |
| 07/04/24 | Black-headed Gull | Foxcote Res | 150 | P Gomersall |
09:00
| ad. Mainly around rafts but also on dam. |
| 06/04/24 | Black-headed Gull | College Lake | 29 | A C Bayliss |
| On the islands first thing but not yet nesting in earnest. |
| 06/04/24 | Black-headed Gull | Foxcote Res | 164 | P Gibbs |
16:37
| Quite a number taking their place on the rafts. |
| 06/04/24 | Black-headed Gull | Hyde Lane | 15 | R S Hill |
08:30
| |
| 05/04/24 | Black-headed Gull | Amersham Flood Meadows | 72 | L Evans |
09:32
| including sadly the very badly oiled adult that is now seemingly resident on site. |
| 05/03/24 | Black-headed Gull | Dorney Common, Dorney | 150 | R W Seekins |
09:50
| |
| 03/04/24 | Black-headed Gull | Foxcote Res | 81 | P Gibbs |
08:51
| More on site, but this number are keeping close to the rafts, a lot of them look to have paired up. |
| 02/04/24 | Black-headed Gull | Calvert BBOWT Lake, Calvert | 12 | T Watts |
10:42
| On and around rafts. |
| 02/04/24 | Black-headed Gull | Foxcote Res | 121 | P Gibbs |
09:31
| |
| 01/04/24 | Black-headed Gull | Rowsham | 50 | M Wallen |
10:30
| Approx. On floods between Rowsham and Hulcott. |
| 31/03/24 | Black-headed Gull | Rowsham | 60 | M Wallen |
15:30
| Approx. |
| 30/03/24 | Black-headed Gull | Rowsham | 100 | M Wallen |
11:00
| Approx. On floods between Rowsham and Hulcott. |
| 26/03/24 | Black-headed Gull | College Lake | 130 | L Evans |
10:26
| 24 active nests now occupied but most birds are still to find scrapes. |
| 24/03/24 | Black-headed Gull | Foxcote Res | 53 | J Rowley |
10:00
| a few birds on the 2 rafts. |
| 24/03/24 | Black-headed Gull | Foxcote Res | 80 | P Gomersall |
08:15
| ad. Mainly around rafts. |
| 22/03/24 | Black-headed Gull | Foxcote Res | 59 | P Gibbs |
09:05
| One pair already on a raft. |
| 11/03/24 | Black-headed Gull | Dorney Common, Dorney | 144 | K P Duncan |
10:00
| |
| 21/03/24 | Black-headed Gull | Calvert BBOWT Lake, Calvert | 22 | P Gibbs |
11:11
| |
| 18/03/24 | Black-headed Gull | Amersham Flood Meadows | 30 | P Watts |
13:00
| |
| 17/03/24 | Black-headed Gull | Amersham Flood Meadows | 73 | M Milne |
13:50
| C.73. |
| 17/03/24 | Black-headed Gull | Fulmer Lake, Fulmer | 30 | M Milne |
10:08
| Probably more. |
| 15/03/24 | Black-headed Gull | Rowsham | 700 | M Wallen |
10:00
| Approx. On floods between Rowsham and Hulcott. |
| 17/03/24 | Black-headed Gull | Rowsham | 400 | M Wallen |
11:20
| Approx. On floods between Rowsham and Hulcott. |
| 17/03/24 | Black-headed Gull | Calvert | 19 | L P Quy |
14:18
| SP682251. |
| 16/03/24 | Black-headed Gull | College Lake | 170 | A C Bayliss |
| Approx. Number increased over the past week but nowhere near the number seen at this time of year in recent years. |
| 16/03/24 | Black-headed Gull | Linford Reserve, Linford GPs | 3 | M Haberfield |
12:00
| |
| 14/03/24 | Black-headed Gull | Amersham Flood Meadows | 160 | L Evans |
08:41
| Still around 160 present on the flooded fields including the striking leucistic first-winter; also 3 adult Common Gulls. |
| 14/03/24 | Black-headed Gull | Foxcote Res | 48 | P Gibbs |
09:46
| |
| 13/03/24 | Black-headed Gull | Rowsham | 500 | M Wallen |
09:15
| Approx, on floods. |
| 13/03/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 50 | M Haberfield |
08:15
| On the spit viewed from the hide, many more around by the pagoda. |
| 12/03/24 | Black-headed Gull | Foxcote Res | 191 | P Gibbs |
15:27
| |
| 11/03/24 | Black-headed Gull | Rowsham | 500 | M Wallen |
14:00
| Approx. On flooded fields between Rowsham and Hulcott. |
| 11/03/24 | Black-headed Gull | Foxcote Res | 229 | P Gibbs |
09:06
| |
| 10/03/24 | Black-headed Gull | Foxcote Res | 114 | P Gomersall |
10:00
| ad. All over res:. |
| 08/03/24 | Black-headed Gull | Rowsham | 300 | M Wallen |
08:00
| Approx.On floods/ wet valley fields between Rowsham and Hulcott. |
| 10/03/24 | Black-headed Gull | Weston Turville Reservoir | 17 | J C Seabrook |
08:30
| |
| 10/03/24 | Black-headed Gull | Dorney Common, Dorney | 82 | L P Quy |
07:31
| SU942789. |
| 09/03/24 | Black-headed Gull | Dorney Common, Dorney | 214 | D L Cleal |
12:00
| |
| 09/03/24 | Black-headed Gull | College Lake | 96 | A C Bayliss |
| On the Marsh. |
| 09/03/24 | Black-headed Gull | Floodplain Forest Nature Reserve (formerly Manor Farm) | 20 | M Haberfield |
11:30
| |
| 09/03/24 | Black-headed Gull | Little Marlow GP | 400 | J E Rose |
08:30
| Approx feeding in Meadow. |
| 09/03/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 90 | M Haberfield |
09:25
| Strung out along the spit. |
| 05/03/24 | Black-headed Gull | Weston Turville Reservoir | 56 | P Stanford |
17:15
| |
| 08/03/24 | Black-headed Gull | Furzton Lake, Milton Keynes | 90 | M Shepherd |
14:42
| Approx. |
| 07/03/24 | Black-headed Gull | Wotton Lakes | 2 | J W Gearing |
10:45
| Please note that this is a private site. |
| 07/03/24 | Black-headed Gull | Foxcote Res | 161 | P Gibbs |
12:00
| |
| 06/03/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 50 | M Haberfield |
16:46
| |
| 05/03/24 | Black-headed Gull | Rowsham | 400 | M Wallen |
13:30
| Approx. |
| 05/03/24 | Black-headed Gull | Floodplain Forest Nature Reserve (formerly Manor Farm) | 40 | I Norman |
11:00
| |
| 05/03/24 | Black-headed Gull | College Lake | 78 | A C Bayliss |
| Spread across the Marsh islands, with some displaying and mating. |
| 04/03/24 | Black-headed Gull | Willen Lake North, Willen Lakes | 30 | M Haberfield |
12:05
| Over 30 black-headed gull milling about over the lake in. front of the hide, many with their summer plumage black heads. |
| 04/03/24 | Black-headed Gull | Ickford | 20 | L P Quy |
16:38
| SP649065. |
| 09/02/24 | Black-headed Gull | Amersham Flood Meadows | 230 | R W Seekins |
11:40
| on flood below reserve. |
| 03/03/24 | Black-headed Gull | College Lake | 70 | A C Bayliss |
| Approx. On the islands. |
| 02/03/24 | Black-headed Gull | Weston Turville Reservoir | 1 | P Watts |
21:30
| |
| 02/03/24 | Black-headed Gull | Rowsham | 500 | M Wallen |
10:15
| Approx, on flooded fields/ floods. |
| 02/03/24 | Black-headed Gull | Floodplain Forest Nature Reserve (formerly Manor Farm) | 20 | M Haberfield |
13:02
| |
| 01/03/24 | Black-headed Gull | Dorney Common, Dorney | 600 | D L Cleal |
14:00
| Constant stream of birds flying in from the NE, with others leaving SW. |
| 27/02/24 | Black-headed Gull | Foxcote Res | 100 | J Rowley |
13:19
| |
| 26/02/24 | Black-headed Gull | Dorney Common, Dorney | 180 | D L Cleal |
15:00
| |
| 25/02/24 | Black-headed Gull | Foxcote Res | 279 | P Gomersall |
12:00
| ad. Mainly on res: some on gantry. |
| 20/02/24 | Black-headed Gull | Dorney Common, Dorney | 1 | K P Duncan |
11:05
| includes a ringed individual (details supplied separately). |
| 23/02/24 | Black-headed Gull | Dorney Common, Dorney | 220 | D L Cleal |
14:30
| |
| 23/02/24 | Black-headed Gull | Tattenhoe, Milton Keynes | 9 | H Appleyard |
| |
| 23/02/24 | Black-headed Gull | Leckhampstead Wharf | 200 | R S Hill |
11:30
| |
| 23/02/24 | Black-headed Gull | Foxcote Res | 220 | P Gomersall |
10:10
| ad. On res: Not counted on gantry. |
| 20/02/24 | Black-headed Gull | Dorney Common, Dorney | 500 | K P Duncan |
11:00
| circa on flood. |
| 20/02/24 | Black-headed Gull | Dorney Common, Dorney | 1 | K P Duncan |
11:00
| COLOUR RINGED: YELLOW Ring with Black code 2RKT Metal Ring No.EZ58118 Ringed aged 3cy or older on 2nd April 2016 at Pitsea Landfill Site, ESSEX by the North Thames Gull Group. 2880 days since ringing. 80km/W from ringing site. Previous sightings on 04/12/2018, 02/01/2019 and 01/10/2022 at Dorney Common and on 20/02/2019 at Little Marlow GP, BUCKINGHAMSHIRE. |
| 18/02/24 | Black-headed Gull | Leckhampstead Wharf | 600 | R S Hill |
15:00
| Distant on the extensive floods. Flock counted when they all took flight. |
| 16/02/24 | Black-headed Gull | Campbell Park | 7 | M Shepherd |
22:37
| |
| 13/02/24 | Black-headed Gull | Eythrope | 37 | D J Stone |
| |
| 14/02/24 | Black-headed Gull | Newport Pagnell, Newport Pagnell | 200 | R Norris |
12:30
| In the horse paddocks by Bury Field.
Including a pure white individual. |
| 14/02/24 | Black-headed Gull | Foxcote Res | 224 | P Gibbs |
10:07
| Very vocal, starting to pair up and getting territorial. |
| 12/02/24 | Black-headed Gull | Langley Park | 63 | L Evans |
| Including a ringed adult winter that has overwintered on site. HA-45926 from Lithuania where it was ringed as a nestling on 2nd June 2018 (Kretuono). |
| 12/02/24 | Black-headed Gull | Leckhampstead Wharf | 1300 | R S Hill |
15:00
| |
| 12/02/24 | Black-headed Gull | Sherington | 200 | W Bush |
12:15
| At least on floods nest Sherington Bridge. |
| 10/02/24 | Black-headed Gull | Fulmer Lake, Fulmer | 60 | M Milne |
17:54
| C.60. |
| 11/02/24 | Black-headed Gull | Rowsham | 1400 | M Wallen |
10:45
| Approx. On floods and feeding in flooded fields between Rowsham and Hulcott. |
| 11/02/24 | Black-headed Gull | Leckhampstead Wharf | 1100 | R S Hill |
16:00
| Significant increase in numbers from this morning. |
| 11/02/24 | Black-headed Gull | Foxcote Res | 24 | P Gomersall |
10:15
| ad. On res: more seen on gantry. |
| 11/02/24 | Black-headed Gull | Leckhampstead Wharf | 800 | R S Hill |
09:45
| |
| 09/02/24 | Black-headed Gull | Linford Reserve, Linford GPs | 4 | M Haberfield |
12:00
| |
| 19/01/24 | Black-headed Gull | Great Brickhill | 30 | R D Andrews |
07:24
| Approx. |
| 08/02/24 | Black-headed Gull | Pump Lane, Marlow | 50 | R Kirk |
00:01
| |
| 07/02/24 | Black-headed Gull | Foxcote Res | 70 | J Rowley |
10:30
| |
| 06/02/24 | Black-headed Gull | Foxcote Res | 178 | P Gibbs |
09:07
| |
| 05/02/24 | Black-headed Gull | Foxcote Res | 164 | P Gibbs |
09:01
| |
| 04/02/24 | Black-headed Gull | Dorney Common, Dorney | 200 | D L Cleal |
14:00
| |
| 04/02/24 | Black-headed Gull | Foxcote Res | 256 | P Gomersall |
10:30
| ad. Most counted so far. |
| 03/02/24 | Black-headed Gull | Tattenhoe, Milton Keynes | 79 | H Appleyard |
| Around this number in a mixed flock of gulls foraging on the estate. |
| 03/02/24 | Black-headed Gull | Stowe | 120 | M S Hunt |
10:00
| |
| 31/01/24 | Black-headed Gull | Dorney Common, Dorney | 200 | D L Cleal |
13:30
| |
| 31/01/24 | Black-headed Gull | Wotton Lakes | 3 | J W Gearing |
10:05
| Please note that this is a private site. |
| 31/01/24 | Black-headed Gull | The Rye, High Wycombe | 150 | J E Rose |
11:30
| Spread across the Rye. |
| 31/01/24 | Black-headed Gull | Foxcote Res | 73 | P Gibbs |
09:07
| |
| 28/01/24 | Black-headed Gull | Eythrope | 30 | D J Stone |
| Approx. Seen with Stewart Dennis. |
| 28/01/24 | Black-headed Gull | Little Marlow Village | 2900 | D J Bevan |
17:30
| BTO WGS- Randall's Lake (Private) 1500-1720. SU870871. |
| 28/01/24 | Black-headed Gull | Linford Reserve, Linford GPs | 18 | M Haberfield |
13:56
| |
| 28/01/24 | Black-headed Gull | Foscote Manor, Foxcote Res | 132 | P Gomersall |
09:35
| ad. All over res:. |
| 27/01/24 | Black-headed Gull | Tongwell | 19 | P R Moon |
12:58
| |
| 27/01/24 | Black-headed Gull | Broughton Grounds, MK | 19 | P R Moon |
11:31
| |
| 26/01/24 | Black-headed Gull | Willen Lake South, Willen Lakes | 1 | M Wallen |
09:30
| Colour Ringed.
Blue ring on right leg with TC69 in white.
Polish ringed bird also seen here at the end of 2023. |
| 26/01/24 | Black-headed Gull | Linford Reserve, Linford GPs | 7 | M Sleet |
23:00
| |
| 26/01/24 | Black-headed Gull | Foxcote Res | 106 | J Rowley |
15:30
| Pre roost maxima. |
| 26/01/24 | Black-headed Gull | Linford Reserve, Linford GPs | 12 | L P Quy |
14:47
| SP842428. |
| 26/01/24 | Black-headed Gull | Foxcote Res | 1 | L P Quy |
10:03
| SP712362. |
| 26/01/24 | Black-headed Gull | Calvert Sailing Lake, Calvert | 3 | L P Quy |
09:06
| |
| 26/01/24 | Black-headed Gull | Foxcote Res | 62 | P Gibbs |
09:01
| |
| 25/01/24 | Black-headed Gull | Leckhampstead Wharf | 110 | R S Hill |
13:30
| |
| 24/01/24 | Black-headed Gull | Foxcote Res | 4 | P Gibbs |
17:21
| Gull roost. |
| 24/01/24 | Black-headed Gull | Wendover Canal | 9 | J C Seabrook |
12:45
| |
| 24/01/24 | Black-headed Gull | Little Marlow GP | 1 | L P Quy |
16:00
| SU877874. |
| 24/01/24 | Black-headed Gull | Foxcote Res | 47 | J Rowley |
11:30
| |
| 23/01/24 | Black-headed Gull | Amersham Flood Meadows | 600 | L Evans |
13:46
| 600 of over 2300 Black-headed Gull feeding in the Misbourne floods at the moment. |
| 21/01/24 | Black-headed Gull | Dorney Common, Dorney | 500 | K P Duncan |
13:20
| circa on flood. |
| 20/01/24 | Black-headed Gull | Willen Lake South, Willen Lakes | 3000 | M Wallen |
16:00
| Approx. |
| 21/01/24 | Black-headed Gull | Little Marlow GP | 50 | M Milne |
16:07
| At least. Half standing on ice together near S path and the other half feeding in the water meadows. |
| 21/01/24 | Black-headed Gull | Foxcote Res | 51 | P Gomersall |
12:00
| ad. Around res:. |
| 20/01/24 | Black-headed Gull | Leckhampstead Wharf | 38 | R S Hill |
10:00
| |
| 19/01/24 | Black-headed Gull | Ivinghoe Hills | 21 | H Appleyard |
| Flying to the west/southwest in the late afternoon. |
| 17/01/24 | Black-headed Gull | Linford GPs | 4 | M Oliver |
13:00
| Please note that a permit is required for access to this site. |
| 17/01/24 | Black-headed Gull | Springfield Farm Landfill | 259 | L Evans |
10:14
| |
| 17/01/24 | Black-headed Gull | Buckingham | 8 | M S Hunt |
08:25
| Coming down to our feeding Station for food scraps. |
| 16/01/24 | Black-headed Gull | Furzton Lake, Milton Keynes | 90 | H Appleyard |
| An estimate of flocks across the lake, though probably more. |
| 15/01/24 | Black-headed Gull | Dorney Lake, Dorney | 20 | D L Cleal |
12:40
| |
| 14/01/24 | Black-headed Gull | Foxcote Res | 82 | P Gomersall |
11:00
| ad. Across res:. |
| 14/01/24 | Black-headed Gull | Leckhampstead Wharf | 350 | R S Hill |
09:45
| |
| 14/01/24 | Black-headed Gull | Weston Turville Reservoir | 15 | J C Seabrook |
09:00
| |
| 13/01/24 | Black-headed Gull | Floodplain Forest Nature Reserve (formerly Manor Farm) | 30 | M Haberfield |
15:00
| |
| 11/01/24 | Black-headed Gull | Ashland, Milton Keynes | 50 | P Barnes |
15:15
| |
| 11/01/24 | Black-headed Gull | College Lake | 2042 | L Evans |
16:00
| 2,042 click-counted by 4pm. |
| 07/01/24 | Black-headed Gull | Foxcote Res | 39 | P Gomersall |
10:55
| ad. In middle of res:. |
| 05/01/24 | Black-headed Gull | Thornton | 150 | R S Hill |
09:15
| Including a striking, partially leucistic bird. |
| 04/01/24 | Black-headed Gull | Lowndes Park, Chesham | 4 | T M Mylett |
09:20
| |
| 04/01/24 | Black-headed Gull | Leckhampstead Wharf | 380 | R S Hill |
10:15
| |
| 03/01/24 | Black-headed Gull | Dorney Common, Dorney | 200 | D L Cleal |
13:30
| |
| 03/01/24 | Black-headed Gull | Leckhampstead Wharf | 350 | R S Hill |
10:00
| |
| 01/01/24 | Black-headed Gull | Wotton Lakes | 1 | J W Gearing |
09:30
| Please note that this is a private site. |
| 01/01/24 | Black-headed Gull | Little Marlow GP | 50 | M Milne |
15:35
| At least. |
| 01/01/24 | Black-headed Gull | Foxcote Res | 1 | P Gomersall |
10:40
| ad. Flew over. |
| 01/01/24 | Black-headed Gull | Passenham Quarry | 40 | R S Hill |
11:00
| |
| 01/01/24 | Black-headed Gull | Beachampton | 130 | R S Hill |
10:30
| On floods west of Hall Farm. |
| 01/01/24 | Black-headed Gull | Leckhampstead Wharf | 230 | R S Hill |
10:00
| |