Grey-headed Gull
| Gender | undetermined |
| Age | adult |
| Plumage | undetermined |
| Recorded | 2018-07-27 |
| Location | Kasane, BW |
| Copyright | Beat Rüegger |
| Family | Gulls |
| Status CH | |
| References | en.wikipedia.org |
| vogelwarte.ch |
23 | 28