| House Martin (Delichon urbicum) | | 2024-05-05 | 2024-05-04 | Heer (Akershus, Norway) | |
| Gjøkesyre (Oxalis acetosella) | | 2024-05-05 | 2024-04-28 | Heer (Akershus, Norway) | |
| Gean, Wild Cherry (Prunus avium) | | 2024-05-05 | 2024-05-04 | Heer (Akershus, Norway) | |
| Large White (Pieris brassicae) | | 2024-05-03 | 2024-05-02 | Heer (Akershus, Norway) | |
| Lesser Whitethroat (Sylvia curruca) | | 2024-05-03 | 2024-05-03 | Heer (Akershus, Norway) | |
| Peacock Butterfly (Aglais io) | | 2024-05-01 | 2024-04-24 | Heer (Akershus, Norway) | |
| Downy Birch (Betula pubescens) | | 2024-05-01 | 2024-04-27 | Heer (Akershus, Norway) | |
| Willow Warbler (Phylloscopus trochilus) | | 2024-05-01 | 2024-04-29 | Heer (Akershus, Norway) | |
| Blackcap (Sylvia atricapilla) | | 2024-05-01 | 2024-04-27 | Heer (Akershus, Norway) | |
| Pied Flycatcher (Ficedula hypoleuca) | | 2024-05-01 | 2024-04-26 | Heer (Akershus, Norway) | |
| Downy Birch (Betula pubescens) | | 2024-04-21 | 2024-04-19 | Heer (Akershus, Norway) | |
| White Wagtail (Motacilla alba) | | 2024-04-18 | 2024-04-17 | Heer (Akershus, Norway) | |
| Goat Willow (Salix caprea) | | 2024-04-16 | 2024-04-14 | Heer (Akershus, Norway) | |
| Wood Anemone (Anemone nemorosa) | | 2024-04-16 | 2024-04-09 | Heer (Akershus, Norway) | |
| Bumble-bee (Bombus sp.) | | 2024-04-16 | 2024-04-14 | Heer (Akershus, Norway) | |
| Chiffchaff (Phylloscopus collybita) | | 2024-04-16 | 2024-04-11 | Heer (Akershus, Norway) | |
| Brimstone (Gonepteryx rhamni) | | 2024-04-01 | 2024-04-01 | Heer (Akershus, Norway) | |
| Redwing (Turdus iliacus) | | 2024-03-31 | 2024-03-31 | Heer (Akershus, Norway) | |
| Song Thrush (Turdus philomelos) | | 2024-03-31 | 2024-03-31 | Heer (Akershus, Norway) | |
| Winter Wren (Troglodytes troglodytes) | | 2024-03-31 | 2024-03-31 | Heer (Akershus, Norway) | |
| Greylag Goose (Anser anser) | | 2024-03-25 | 2024-03-11 | Heer (Akershus, Norway) | |
| Robin (Erithacus rubecula) | | 2024-03-25 | 2024-03-24 | Heer (Akershus, Norway) | |
| Chaffinch (Fringilla coelebs) | | 2024-03-16 | 2024-03-16 | Heer (Akershus, Norway) | |
| Black Alder (Alnus glutinosa) | | 2024-03-15 | 2024-03-10 | Heer (Akershus, Norway) | |
| Common Blackbird (Turdus merula) | | 2024-03-15 | 2024-03-14 | Heer (Akershus, Norway) | |
| Goat Willow (Salix caprea) | | 2024-03-15 | 2024-03-10 | Heer (Akershus, Norway) | |
| Common Hazel (Corylus avellana) | | 2024-03-11 | 2024-03-09 | Heer (Akershus, Norway) | |
| Colt's-foot (Tussilago farfara) | | 2024-03-07 | 2024-03-07 | Heer (Akershus, Norway) | |
| Eurasian Tree Sparrow (Passer montanus) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) |  |
| Brambling (Fringilla montifringilla) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Blue Tit (Cyanistes caeruleus) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Eurasian Bullfinch (Pyrrhula pyrrhula) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| European Greenfinch (Carduelis chloris) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Eurasian Siskin (Carduelis spinus) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Mealy Redpoll (Carduelis flammea) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Yellowhammer (Emberiza citrinella) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Hawfinch (Coccothraustes coccothraustes) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Great Tit (Parus major) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Wood Pigeon (Columba palumbus) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Black-billed Magpie (Pica pica) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Nuthatch (Sitta europaea) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| European Goldfinch (Carduelis carduelis) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Common Blackbird (Turdus merula) | | 2024-03-07 | 2024-01-15 | Heer (Akershus, Norway) | |
| Skylark (Alauda arvensis) | | 2024-03-07 | 2024-03-04 | Heer (Akershus, Norway) | |
| Skylark (Alauda arvensis) | | 2024-03-07 | 2024-03-05 | Heer (Akershus, Norway) | |
| House Martin (Delichon urbicum) | | 2008-05-26 | 2008-05-25 | Heer (Akershus, Norway) | |
| Common Swift (Apus apus) | | 2008-05-26 | 2008-05-25 | Heer (Akershus, Norway) | |
| Pied Flycatcher (Ficedula hypoleuca) | | 2008-05-12 | 2008-05-03 | Heer (Akershus, Norway) | |
| Chiffchaff (Phylloscopus collybita) | | 2008-05-12 | 2008-05-07 | Heer (Akershus, Norway) | |
| Chiffchaff (Phylloscopus collybita) | | 2008-05-12 | 2008-05-07 | Heer (Akershus, Norway) | |
Sustain.no is provided by the Norwegian Centre for Science Education