| Titre : | Migration of Red-throated Divers Gavia stellata and Black-throated Divers G. arctica near Helgoland (SE North Sea). |
| Auteurs : | Volker Dierschke, Auteur |
| Type de document : | Article |
| Dans : | Vogelwelt (Die) (123(4) 2002) |
| Article en page(s) : | 203-211 |
| Résumé : | Twelve-year counts of migrating divers revealed an extrapolated annual number of 27,400 birds (>95% Red-throated Divers) passing the sea in a |



