Site: Skien
| Species | Scientific name | 2007 | 2010 | 2011 | 2012 | 2013 | 2014 | 2017 | 2018 | 2019 | 2021 | 2022 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feral Pigeon | Columba livia domestica | 1 | 1 | 2 | 1 | 1 | 1 | 1 | ||||||
| Downy Birch | Betula pubescens | 1 | ||||||||||||
| Blue Tit | Cyanistes caeruleus | 1 | ||||||||||||
| Giant Garden Slug | Limax maximus | 1 | ||||||||||||
| Eurasian Bullfinch | Pyrrhula pyrrhula | 1 | ||||||||||||
| European Greenfinch | Chloris chloris | 1 | ||||||||||||
| House Sparrow | Passer domesticus | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Fieldfare | Turdus pilaris | 1 | ||||||||||||
| Yellowhammer | Emberiza citrinella | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | |||||
| White-lipped Gardensnail | Cepaea hortensis | 1 | ||||||||||||
| Colt's-foot | Tussilago farfara | 1 | ||||||||||||
| Wood Anemone | Anemone nemorosa | 1 | ||||||||||||
| Great Tit | Parus major | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||
| White Wagtail | Motacilla alba | 1 | ||||||||||||
| Common Buzzard | Buteo buteo | 1 | ||||||||||||
| Eurasian Tree Sparrow | Passer montanus | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| Wood Pigeon | Columba palumbus | 1 | 1 | |||||||||||
| Robin | Erithacus rubecula | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Goat Willow | Salix caprea | 1 | ||||||||||||
| Eurasian Magpie | Pica pica | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Nuthatch | Sitta europaea | 1 | ||||||||||||
| Common Blackbird | Turdus merula | 1 | 1 | 1 | 1 | |||||||||
| Eurasian Collared Dove | Streptopelia decaocto | 1 | 1 | 1 | ||||||||||
| Northern Lapwing | Vanellus vanellus | 1 | ||||||||||||
| Bumble-bee | Bombus sp. | 1 |
