Great Black-backed Gull
| Gender | undetermined |
| Age | adult |
| Plumage | non-breeding plumage |
| Recorded | 2004-10-04 |
| Location | Klaipeda, LT |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | undetermined |
| Plumage | undetermined |
| Recorded | 2000-10-01 |
| Location | Brouwersdam, NL |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | 1st calendar year |
| Plumage | undetermined |
| Recorded | 2004-10-03 |
| Location | Juodkranté, LT |
| Copyright | Beat Rüegger |
| Family | Gulls |
| Status CH | rare migrant, local winter visitor |
| References | en.wikipedia.org |
| vogelwarte.ch |
104 | 234