| Great Tit (Parus major) | | 2020-01-27 | 2020-01-25 | Kastellet (Akershus, Norway) |  |
| Mealy Redpoll (Carduelis flammea) | | 2020-01-27 | 2020-01-25 | Kastellet (Akershus, Norway) | |
| Eurasian Siskin (Carduelis spinus) | | 2020-01-27 | 2020-01-25 | Kastellet (Akershus, Norway) | |
| European Greenfinch (Carduelis chloris) | | 2020-01-27 | 2020-01-25 | Kastellet (Akershus, Norway) | |
| Great Tit (Parus major) | | 2019-01-28 | 2019-01-27 | Kastellet (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2019-01-28 | 2019-01-27 | Kastellet (Akershus, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2019-01-28 | 2019-01-27 | Kastellet (Akershus, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2019-01-28 | 2019-01-27 | Kastellet (Akershus, Norway) | |
| European Greenfinch (Carduelis chloris) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Jackdaw (Corvus monedula) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Great Tit (Parus major) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Golden Eagle (Aquila chrysaetos) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Whooper Swan (Cygnus cygnus) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Black-billed Magpie (Pica pica) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Nuthatch (Sitta europaea) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Long-tailed Tit (Aegithalos caudatus) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| European Shag (Phalacrocorax aristotelis) | | 2018-01-30 | 2018-01-28 | Kastellet (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Common Blackbird (Turdus merula) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Nuthatch (Sitta europaea) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Black-billed Magpie (Pica pica) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Whooper Swan (Cygnus cygnus) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Great Tit (Parus major) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Jackdaw (Corvus monedula) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Mealy Redpoll (Carduelis flammea) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| European Greenfinch (Carduelis chloris) | | 2017-01-30 | 2017-01-29 | Kastellet (Akershus, Norway) | |
| Whooper Swan (Cygnus cygnus) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| European Shag (Phalacrocorax aristotelis) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Common Blackbird (Turdus merula) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Nuthatch (Sitta europaea) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Black-billed Magpie (Pica pica) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Great Tit (Parus major) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Fieldfare (Turdus pilaris) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Mealy Redpoll (Carduelis flammea) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Eurasian Siskin (Carduelis spinus) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| European Greenfinch (Carduelis chloris) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2016-01-31 | 2016-01-31 | Kastellet (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2015-01-26 | 2015-01-25 | Kastellet (Akershus, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2015-01-26 | 2015-01-25 | Kastellet (Akershus, Norway) | |
| Nuthatch (Sitta europaea) | | 2015-01-26 | 2015-01-25 | Kastellet (Akershus, Norway) | |
| Black-billed Magpie (Pica pica) | | 2015-01-26 | 2015-01-25 | Kastellet (Akershus, Norway) | |
Sustain.no is provided by the Norwegian Centre for Science Education