Lesser Black-backed Gull
- Group
- Birds
- Peak month
- August
- Records since 2000
- 1,165,954
Black-headed Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 1,071,610
Herring Gull
- Group
- Birds
- Peak month
- April
- Records since 2000
- 1,031,320
Mew Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 355,098
Great Black-backed Gull
- Group
- Birds
- Peak month
- October
- Records since 2000
- 343,232
Common Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 154,963
Mediterranean Gull
- Group
- Birds
- Peak month
- August
- Records since 2000
- 120,966
Black-legged Kittiwake
- Group
- Birds
- Peak month
- June
- Records since 2000
- 94,955
Sandwich Tern
- Group
- Birds
- Peak month
- August
- Records since 2000
- 88,504
Arctic Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 33,992
Yellow-legged Gull
- Group
- Birds
- Peak month
- August
- Records since 2000
- 31,327
Little Gull
- Group
- Birds
- Peak month
- April
- Records since 2000
- 23,156
Little Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 20,325
Caspian Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 12,452
Black Tern
- Group
- Birds
- Peak month
- September
- Records since 2000
- 10,051
Iceland Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 6,693
Glaucous Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 5,212
Roseate Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 4,046
Sabine's Gull
- Group
- Birds
- Peak month
- September
- Records since 2000
- 2,159
Bonaparte's Gull
- Group
- Birds
- Peak month
- July
- Records since 2000
- 1,770
Ring-billed Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 1,313
White-winged Tern
- Group
- Birds
- Peak month
- August
- Records since 2000
- 1,194
Caspian Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 826
Whiskered Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 470
Gull billed Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 428
Franklin's Gull
- Group
- Birds
- Peak month
- July
- Records since 2000
- 355
Laughing Gull
- Group
- Birds
- Peak month
- February
- Records since 2000
- 352
Forster's Tern
- Group
- Birds
- Peak month
- August
- Records since 2000
- 341
Ross's Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 315
Kelp Gull
- Group
- Birds
- Peak month
- August
- Records since 2000
- 283
Elegant Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 255
Bridled Tern
- Group
- Birds
- Peak month
- June
- Records since 2000
- 244
Sooty Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 167
American Herring Gull
- Group
- Birds
- Peak month
- March
- Records since 2000
- 154
Lesser Crested Tern
- Group
- Birds
- Peak month
- December
- Records since 2000
- 138
Ivory Gull
- Group
- Birds
- Peak month
- December
- Records since 2000
- 129
Royal Tern
- Group
- Birds
- Peak month
- October
- Records since 2000
- 94
Crested Tern
- Group
- Birds
- Peak month
- October
- Records since 2000
- 75
Anous stolidus
- Group
- Birds
- Peak month
- October
- Records since 2000
- 74
Audouin's Gull
- Group
- Birds
- Peak month
- May
- Records since 2000
- 68