Site: Vollen
| Species | Scientific name | 2017 | 2019 | 2023 |
|---|---|---|---|---|
| Blue Tit | Cyanistes caeruleus | 1 | 1 | 1 |
| Chaffinch | Fringilla coelebs | 1 | ||
| Eurasian Bullfinch | Pyrrhula pyrrhula | 1 | 1 | |
| Eurasian Red Squirrel | Sciurus vulgaris | 1 | 1 | 1 |
| European Greenfinch | Carduelis chloris | 1 | 1 | |
| Eurasian Siskin | Carduelis spinus | 1 | ||
| Herring Gull | Larus argentatus | 1 | 1 | |
| Mealy Redpoll | Carduelis flammea | 1 | 1 | |
| House Sparrow | Passer domesticus | 1 | ||
| Fieldfare | Turdus pilaris | 1 | ||
| Yellowhammer | Emberiza citrinella | 1 | ||
| Great Tit | Parus major | 1 | 1 | 1 |
| Hooded Crow | Corvus cornix | 1 | 1 | |
| Eurasian Jay | Garrulus glandarius | 1 | ||
| Eurasian Tree Sparrow | Passer montanus | 1 | 1 | |
| Robin | Erithacus rubecula | 1 | 1 | |
| Eurasian Magpie | Pica pica | 1 | 1 | 1 |
| Nuthatch | Sitta europaea | 1 | 1 | |
| Eurasian Sparrowhawk | Accipiter nisus | 1 | ||
| Common Blackbird | Turdus merula | 1 | 1 |
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