Site: Hovenga, Porsgrunn
| Species | Scientific name | 2010 | 2013 |
|---|---|---|---|
| Feral Pigeon | Columba livia domestica | 2 | 1 |
| Brambling | Fringilla montifringilla | 1 | |
| Blue Tit | Cyanistes caeruleus | 1 | |
| Great Spotted Woodpecker | Dendrocopos major | 1 | |
| European Greenfinch | Carduelis chloris | 1 | |
| House Sparrow | Passer domesticus | 1 | 1 |
| Colt's-foot | Tussilago farfara | 1 | |
| Great Tit | Parus major | 1 | 1 |
| Hooded Crow | Corvus cornix | 1 | |
| White Wagtail | Motacilla alba | 1 | |
| Small Tortoiseshell | Aglais urticae | 1 | |
| Robin | Erithacus rubecula | 1 | 1 |
| Goat Willow | Salix caprea | 1 | |
| Eurasian Magpie | Pica pica | 2 | 1 |
| Bumble-bee | Bombus sp. | 1 |
