Site: Tretjønnveien 20
| Species | Scientific name | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|
| Brambling | Fringilla montifringilla | 1 | ||||||
| Blue Tit | Cyanistes caeruleus | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Eurasian Bullfinch | Pyrrhula pyrrhula | 1 | 1 | 1 | ||||
| Eurasian Red Squirrel | Sciurus vulgaris | 1 | ||||||
| Great Spotted Woodpecker | Dendrocopos major | 1 | 1 | |||||
| European Greenfinch | Carduelis chloris | 1 | ||||||
| Eurasian Siskin | Carduelis spinus | 1 | ||||||
| House Sparrow | Passer domesticus | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Hedge Accentor | Prunella modularis | 1 | 1 | |||||
| Hawfinch | Coccothraustes coccothraustes | 1 | 1 | |||||
| Great Tit | Parus major | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Blackcap | Sylvia atricapilla | 1 | ||||||
| Eurasian Tree Sparrow | Passer montanus | 1 | 1 | 1 | 1 | 1 | 1 | |
| Wood Pigeon | Columba palumbus | 1 | 1 | 1 | ||||
| Robin | Erithacus rubecula | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Black-billed Magpie | Pica pica | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nuthatch | Sitta europaea | 1 | 1 | 1 | ||||
| European Starling | Sturnus vulgaris | 1 | 1 | |||||
| Coal Tit | Periparus ater | 1 | 1 | |||||
| Common Blackbird | Turdus merula | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Eurasian Collared Dove | Streptopelia decaocto | 1 |
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