| Bilberry (Vaccinium myrtillus) | | 2015-05-01 | 2015-04-30 | Bjørkelangen (Akershus, Norway) |
| Brambling (Fringilla montifringilla) | | 2015-05-01 | 2015-04-20 | Bjørkelangen (Akershus, Norway) |
| Brambling (Fringilla montifringilla) | | 2015-05-01 | 2015-01-08 | Bjørkelangen (Akershus, Norway) |
| Downy Birch (Betula pubescens) | | 2015-05-01 | 2015-04-10 | Bjørkelangen (Akershus, Norway) |
| Downy Birch (Betula pubescens) | | 2015-05-01 | 2015-04-16 | Bjørkelangen (Akershus, Norway) |
| Marsh-marigold (Caltha palustris) | | 2015-05-01 | 2015-04-27 | Bjørkelangen (Akershus, Norway) |
| Common Blackbird (Turdus merula) | | 2015-05-01 | 2015-03-21 | Bjørkelangen (Akershus, Norway) |
| European Starling (Sturnus vulgaris) | | 2015-05-01 | 2015-03-13 | Bjørkelangen (Akershus, Norway) |
| Mallard (Anas platyrhynchos) | | 2015-05-01 | 2015-01-22 | Bjørkelangen (Akershus, Norway) |
| Mealy Redpoll (Carduelis flammea) | | 2014-02-05 | 2014-01-17 | Bjørkelangen (Akershus, Norway) |
| Common Blackbird (Turdus merula) | | 2014-02-05 | 2014-02-02 | Bjørkelangen (Akershus, Norway) |
| Mallard (Anas platyrhynchos) | | 2014-02-05 | 2014-01-04 | Bjørkelangen (Akershus, Norway) |
| Mallard (Anas platyrhynchos) | | 2014-02-05 | 2014-01-04 | Bjørkelangen (Akershus, Norway) |
| Eurasian Sparrowhawk (Accipiter nisus) | | 2014-02-05 | 2014-01-14 | Bjørkelangen (Akershus, Norway) |
| Nuthatch (Sitta europaea) | | 2014-02-05 | 2014-01-17 | Bjørkelangen (Akershus, Norway) |
| Nuthatch (Sitta europaea) | | 2014-02-05 | 2014-01-17 | Bjørkelangen (Akershus, Norway) |
| Black-billed Magpie (Pica pica) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Black-billed Magpie (Pica pica) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Common Raven (Corvus corax) | | 2014-02-05 | 2014-01-11 | Bjørkelangen (Akershus, Norway) |
| Mealy Redpoll (Carduelis flammea) | | 2014-02-05 | 2014-01-17 | Bjørkelangen (Akershus, Norway) |
| Common Raven (Corvus corax) | | 2014-02-05 | 2014-01-11 | Bjørkelangen (Akershus, Norway) |
| Eurasian Tree Sparrow (Passer montanus) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Eurasian Tree Sparrow (Passer montanus) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Hooded Crow (Corvus cornix) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
| Hooded Crow (Corvus cornix) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
| Mute Swan (Cygnus olor) | | 2014-02-05 | 2014-02-02 | Bjørkelangen (Akershus, Norway) |
| Mute Swan (Cygnus olor) | | 2014-02-05 | 2014-02-02 | Bjørkelangen (Akershus, Norway) |
| Great Tit (Parus major) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Jackdaw (Corvus monedula) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
| Feral Pigeon (Columba livia domestica) | | 2014-02-05 | 2014-01-08 | Bjørkelangen (Akershus, Norway) |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Great Spotted Woodpecker (Dendrocopos major) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Great Spotted Woodpecker (Dendrocopos major) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| European Greenfinch (Carduelis chloris) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| Jackdaw (Corvus monedula) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
| Yellowhammer (Emberiza citrinella) | | 2014-02-05 | 2014-01-15 | Bjørkelangen (Akershus, Norway) |
| Yellowhammer (Emberiza citrinella) | | 2014-02-05 | 2014-01-15 | Bjørkelangen (Akershus, Norway) |
| Fieldfare (Turdus pilaris) | | 2014-02-05 | 2014-01-11 | Bjørkelangen (Akershus, Norway) |
| Blue Tit (Cyanistes caeruleus) | | 2014-02-05 | 2014-01-01 | Bjørkelangen (Akershus, Norway) |
| House Sparrow (Passer domesticus) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
| House Sparrow (Passer domesticus) | | 2014-02-05 | 2014-01-02 | Bjørkelangen (Akershus, Norway) |
Sustain.no is provided by the Norwegian Centre for Science Education