Petter Bjertnæs Nilsson
| Species | Scientific name | 2011 | 2024 |
|---|---|---|---|
| Blue Tit | Cyanistes caeruleus | 2 | 1 |
| Lesser Spotted Woodpecker | Dendrocopos minor | 1 | |
| Great Spotted Woodpecker | Dendrocopos major | 2 | 1 |
| House Sparrow | Passer domesticus | 1 | |
| Yellowhammer | Emberiza citrinella | 2 | 1 |
| Northern Goshawk | Accipiter gentilis | 1 | |
| Great Tit | Parus major | 2 | 1 |
| Eurasian Tree Sparrow | Passer montanus | 1 | 1 |
| Robin | Erithacus rubecula | 1 | |
| Black-billed Magpie | Pica pica | 1 | |
| Nuthatch | Sitta europaea | 1 | 1 |
| Common Blackbird | Turdus merula | 1 | 1 |
Sustain.no is provided by the Norwegian Centre for Science Education