| Great Tit (Parus major) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) |  |
| Yellowhammer (Emberiza citrinella) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) | |
| Great Spotted Woodpecker (Dendrocopos major) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) | |
| Robin (Erithacus rubecula) | | 2020-01-25 | 2020-01-25 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Common Blackbird (Turdus merula) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Black-billed Magpie (Pica pica) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Robin (Erithacus rubecula) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Great Tit (Parus major) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-01-31 | 2019-01-28 | Årum (Østfold, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2018-01-27 | 2018-01-26 | Årum (Østfold, Norway) | |
| Great Tit (Parus major) | | 2018-01-27 | 2018-01-26 | Årum (Østfold, Norway) | |
| Common Blackbird (Turdus merula) | | 2018-01-27 | 2018-01-26 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2018-01-27 | 2018-01-26 | Årum (Østfold, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2018-01-27 | 2018-01-26 | Årum (Østfold, Norway) | |
| Black-billed Magpie (Pica pica) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| Great Spotted Woodpecker (Dendrocopos major) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| Great Tit (Parus major) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| Common Blackbird (Turdus merula) | | 2017-01-29 | 2017-01-29 | Årum (Østfold, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Common Blackbird (Turdus merula) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Black-billed Magpie (Pica pica) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Robin (Erithacus rubecula) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Great Tit (Parus major) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Great Spotted Woodpecker (Dendrocopos major) | | 2015-01-25 | 2015-01-25 | Årum (Østfold, Norway) | |
| Great Spotted Woodpecker (Dendrocopos major) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Common Blackbird (Turdus merula) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Black-billed Magpie (Pica pica) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Robin (Erithacus rubecula) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Great Tit (Parus major) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| House Sparrow (Passer domesticus) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2014-01-25 | 2014-01-25 | Årum (Østfold, Norway) | |
Sustain.no is provided by the Norwegian Centre for Science Education