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| BTO Home > Bird Atlas Home > Species index > Black-headed Gull | |
Black-headed Gull - Larus ridibundus |
This page shows maps of 10km squares where this species was recorded during the first and second breeding atlases, the winter atlas and the change in distribution between the two breeding atlases. See the main pages for detailed descriptions of the Atlas survey and mapping methods. |
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| Compare Breeding Atlas I and Atlas II side by side |
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| Black-headed Gull coverage (number of squares recorded) |
| Channel Isles not included - see notes for details |
| Years | Br breeding | Ir breeding | Both |
|---|---|---|---|
| 1968-72 | 827 | 281 | 1108 |
| 1988-91 | 671 | 145 | 816 |
| Change % | -19 | -48 | -26 |
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