| Great Tit (Parus major) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) |  |
| Common Blackbird (Turdus merula) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) | |
| House Sparrow (Passer domesticus) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2022-01-31 | 2022-01-29 | Birkeland (Rogaland, Norway) | |
| House Sparrow (Passer domesticus) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Great Spotted Woodpecker (Dendrocopos major) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Common Blackbird (Turdus merula) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2021-01-31 | 2021-01-31 | Birkeland (Rogaland, Norway) | |
| House Sparrow (Passer domesticus) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Common Blackbird (Turdus merula) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2019-01-28 | 2019-01-28 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Common Blackbird (Turdus merula) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Marsh Tit (Poecile palustris) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Green Woodpecker (Picus viridis) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2018-01-29 | 2018-01-28 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Common Blackbird (Turdus merula) | | 2017-01-30 | 2017-01-29 | Birkeland (Rogaland, Norway) | |
| Fieldfare (Turdus pilaris) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Common Blackbird (Turdus merula) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2016-01-31 | 2016-01-31 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2015-01-26 | 2015-01-25 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2015-01-26 | 2015-01-25 | Birkeland (Rogaland, Norway) | |
| Great Tit (Parus major) | | 2015-01-26 | 2015-01-25 | Birkeland (Rogaland, Norway) | |
| Robin (Erithacus rubecula) | | 2015-01-26 | 2015-01-25 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2015-01-26 | 2015-01-25 | Birkeland (Rogaland, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2014-01-27 | 2014-01-26 | Birkeland (Rogaland, Norway) | |
| Nuthatch (Sitta europaea) | | 2014-01-27 | 2014-01-26 | Birkeland (Rogaland, Norway) | |
| Black-billed Magpie (Pica pica) | | 2014-01-27 | 2014-01-26 | Birkeland (Rogaland, Norway) | |
Sustain.no is provided by the Norwegian Centre for Science Education