| Referens | Cadée, G.C., 2000 Herring gulls feeding on a recent invader in the Wadden Sea, Ensis directus. Geological Society, London, Special Publications 177(1):459-464. |
| Ref. | 113039 Cadée, G.C., 2000 |
| Sida | 462 |
| Named Used as Valid | Ensis directus |
| Observationsplats | |
| Distribution |