| Ref. No. | Title |
|---|---|
| 6565 | Comparative feeding ecology of Herring Gulls Larus argentatus and Lesser Black-backed Gulls Larus fuscus. |
| 7027 | Interactions between Herring and Lesser Black-backed Gulls feeding on refuse. |
| 7041 | Comparative feeding behavior of immature and adult Herring Gulls. |