| Referens | Wilkens, S. and K.-M. Exo, 1998 Population size and density dependant effects on breeding success in Herring gulls (Larus argentatus) on Mellum Island. Journal for Ornithology 139:21-36. |
| Ref. | 101503 Wilkens, S. and K.-M. Exo, 1998 |
| Sida | |
| Named Used as Valid | Larus argentatus |
| Observationsplats | |
| Distribution |