Site: Olsberg
| Species | Scientific name | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|
| Blue Tit | Cyanistes caeruleus | 1 | 1 | 1 | 1 | 1 |
| Eurasian Bullfinch | Pyrrhula pyrrhula | 1 | 1 | 1 | 1 | 1 |
| Willow Tit | Poecile montanus | 1 | 1 | 1 | 1 | 1 |
| Mealy Redpoll | Carduelis flammea | 1 | ||||
| Grey-headed Woodpecker | Picus canus | 1 | 1 | 1 | ||
| Great Tit | Parus major | 1 | 1 | 1 | 1 | 1 |
| Hooded Crow | Corvus cornix | 1 | 1 | 1 | 1 | |
| Eurasian Jay | Garrulus glandarius | 1 | 1 | 1 | 1 | |
| Tengmalm's Owl | Aegolius funereus | 1 | ||||
| Black-billed Magpie | Pica pica | 1 | 1 | 1 | 1 | |
| Nuthatch | Sitta europaea | 1 | 1 | |||
| Coal Tit | Periparus ater | 1 | 1 | 1 | 1 | 1 |
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