Site: Østensjøvannet
| Species | Scientific name | 2025 |
|---|---|---|
| Feral Pigeon | Columba livia domestica | 1 |
| Chaffinch | Fringilla coelebs | 1 |
| Mew Gull | Larus canus | 1 |
| Great Spotted Woodpecker | Dendrocopos major | 1 |
| Chiffchaff | Phylloscopus collybita | 1 |
| European Greenfinch | Chloris chloris | 1 |
| Greylag Goose | Anser anser | 1 |
| Black-headed Gull | Chroicocephalus ridibundus | 1 |
| Canada Goose | Branta canadensis | 1 |
| Great Tit | Parus major | 1 |
| Mute Swan | Cygnus olor | 1 |
| Goosander | Mergus merganser | 1 |
| Smew | Mergellus albellus | 1 |
| Eurasian Tree Sparrow | Passer montanus | 1 |
| Wood Pigeon | Columba palumbus | 1 |
| Lesser Black-backed Gull | Larus fuscus | 1 |
| Common Coot | Fulica atra | 1 |
| European Goldfinch | Carduelis carduelis | 1 |
| Mallard | Anas platyrhynchos | 1 |
| Great Cormorant | Phalacrocorax carbo | 1 |
| Common Blackbird | Turdus merula | 1 |
| Tufted Duck | Aythya fuligula | 1 |
| Great Crested Grebe | Podiceps cristatus | 1 |
