Common Tern
| Gender | undetermined |
| Age | adult |
| Plumage | breeding plumage |
| Recorded | 2011-05-16 |
| Location | Donaudelta, RO |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | adult |
| Plumage | breeding plumage |
| Recorded | 2012-05-20 |
| Location | Donaudelta, RO |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | adult |
| Plumage | breeding plumage |
| Recorded | 2014-05-03 |
| Location | Chablais de Cudrefin, FR, CH |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | 1st calendar year |
| Plumage | undetermined |
| Recorded | 2001-10-05 |
| Location | Donaudelta, RO |
| Copyright | Beat Rüegger |
| Gender | undetermined |
| Age | 1st calendar year |
| Plumage | juvenile plumage |
| Recorded | 2005-08-20 |
| Location | Chablais de Cudrefin, CH |
| Copyright | Beat Rüegger |
| Family | Terns |
| Status CH | regular migrant, local breeding bird |
| References | en.wikipedia.org |
| vogelwarte.ch |
5 | 5