Site: Østensjøvannet
| Species | Scientific name | 2025 |
|---|---|---|
| Feral Pigeon | Columba livia domestica | 1 |
| Mew Gull | Larus canus | 2 |
| Greylag Goose | Anser anser | 1 |
| Grey Heron | Ardea cinerea | 1 |
| Black-headed Gull | Chroicocephalus ridibundus | 1 |
| Barnacle Goose | Branta leucopsis | 1 |
| Jackdaw | Corvus monedula | 1 |
| Canada Goose | Branta canadensis | 1 |
| Mute Swan | Cygnus olor | 1 |
| Pink-footed Goose | Anser brachyrhynchus | 1 |
| Eurasian Teal | Anas crecca | 1 |
| Hooded Crow | Corvus cornix | 1 |
| Common Goldeneye | Bucephala clangula | 1 |
| Goosander | Mergus merganser | 1 |
| Barn Swallow | Hirundo rustica | 1 |
| Lesser Black-backed Gull | Larus fuscus | 1 |
| Moorhen | Gallinula chloropus | 1 |
| Reed Bunting | Emberiza schoeniclus | 1 |
| Common Coot | Fulica atra | 1 |
| Northern Pintail | Anas acuta | 1 |
| Mallard | Anas platyrhynchos | 2 |
| Common Pochard | Aythya ferina | 1 |
| Tufted Duck | Aythya fuligula | 1 |
| Great Crested Grebe | Podiceps cristatus | 1 |
