| Blue Tit (Cyanistes caeruleus) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) |  |
| Nuthatch (Sitta europaea) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2020-02-16 | 2020-01-16 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2020-02-02 | 2020-02-02 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2020-02-02 | 2020-02-02 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-02-02 | 2020-02-02 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2020-02-02 | 2020-02-02 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2020-02-02 | 2020-02-02 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2020-01-27 | 2020-01-26 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2020-01-27 | 2020-01-26 |  | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2020-01-27 | 2020-01-26 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-01-27 | 2020-01-26 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2020-01-27 | 2020-01-26 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2020-01-27 | 2020-01-26 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Nuthatch (Sitta europaea) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2020-01-25 | 2020-01-25 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2020-01-03 | 2020-01-03 | | kjerkol (Trøndelag, Norway) | |
| Nuthatch (Sitta europaea) | | 2020-01-03 | 2020-01-03 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2020-01-03 | 2020-01-03 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2020-01-03 | 2020-01-03 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2020-01-03 | 2020-01-03 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-02-12 | 2019-02-12 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| House Sparrow (Passer domesticus) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-02-03 | 2019-02-03 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2019-01-28 | 2019-01-28 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2019-01-28 | 2019-01-28 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-01-28 | 2019-01-28 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2019-01-28 | 2019-01-28 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2019-01-28 | 2019-01-28 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Great Tit (Parus major) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Willow Tit (Poecile montanus) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2019-01-27 | 2019-01-27 | | kjerkol (Trøndelag, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2018-01-28 | 2018-01-28 | | kjerkol (Trøndelag, Norway) | |
| Whooper Swan (Cygnus cygnus) | | 2018-01-28 | 2018-01-28 | | kjerkol (Trøndelag, Norway) | |
Sustain.no is provided by the Norwegian Centre for Science Education