Jussi Murtosaari / Goldeneye (Bucephala clangula) with chicks swimming behind, Helsinki, Uusimaa, Finland, May.

Jussi Murtosaari / Green-veined white butterfly (Pieris napi) in flight, Jyvaskyla, Keski-Finland / Central Finland, Finland, September.

Jussi Murtosaari / Apollo butterfly (Parnassius apollo) in flight, Foglo, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Muskrat (Ondatra zibethicus) Espoo, Uusimaa, Finland, May. Introduced species.

Jussi Murtosaari / Scarce tortoiseshell butterfly (Nymphalis xanthomelas) on pussy willow, Luhanka, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Yellow-necked mouse (Apodemus flavicollis) Joutsa, Keski-Finland, March. / Central Finland, Finland, March.

Jussi Murtosaari / Yellow-necked mouse (Apodemus flavicollis) peering out of undergrowth, Joutsa, Keski-Finland, March. / Central Finland, Finland, March.

Jussi Murtosaari / Red-throated pipit (Anthus cervinus) on algae at waters edge, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Northern shoveler (Anas clypeata) female, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Northern shoveler (Anas clypeata) male, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / European adder (Vipera berus) pair mating, Joutsa, Keski-Finland / Central Finland, Finland, May.

Jussi Murtosaari / European adder (Vipera berus) mating pair, Joutsa, Keski-Finland / Central Finland, Finland, May.

Jussi Murtosaari / Fieldfare (Turdus pilaris) feeding on Rowan (Sorbus aucuparia) berries on snow covered branch, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Fieldfare (Turdus pilaris) feeding on Rowan (Sorbus aucuparia) berries on snow covered branch, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Fieldfare (Turdus pilaris) feeding on Rowan (Sorbus aucuparia) berries, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Fieldfare (Turdus pilaris) in Rowan (Sorbus aucuparia) tree, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Fieldfare (Turdus pilaris) feeding on berries in Rowan (Sorbus aucuparia) tree, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Fieldfare (Turdus pilaris) in Rowan (Sorbus aucuparia) tree, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Blackbird (Turdus merula) Uto, Lounais-Finland, March. / South-Western Finland, Finland, March.

Jussi Murtosaari / Wood sandpiper (Tringa glareola) Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Yellow-winged darter dragonfly (Sympetrum flaveolum) pair mating, Turku, Lounais-Finland / South-Western Finland, Finland, July.

Jussi Murtosaari / Lesser whitethroat (Sylvia curruca) Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Eurasian blackcap (Sylvia atricapilla) Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / (Sylvia atricapilla) Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Eurasian woodcock (Scolopax rusticola) Jyvaskyla, Keski-Finland / Central Finland, Finland, May.

Jussi Murtosaari / Eurasian woodcock (Scolopax rusticola) Jyvaskyla, Keski-Finland / Central Finland, Finland, May.

Jussi Murtosaari / Red squirrel (Sciurus vulgaris) feeding, Jyvaskyla, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Common blue butterfly (Polyommatus icarus) two mating with another flying above, Jyvaskyla, Keski-Finland / Central Finland, Finland, September.

Jussi Murtosaari / Common blue butterfly (Polyommatus icarus) on ground, Jyvaskyla, Keski-Finland / Central Finland, Finland, September.

Jussi Murtosaari / Common blue butterfly (Polyommatus icarus) on ground, Jyvaskyla, Keski-Finland / Central Finland, Finland, September.

Jussi Murtosaari / Northern brown argus butterfly (Plebeius artaxerxes) Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Pine grosbeak (Pinicola enucleator) feeding on Rowan (Sorbus aucuparia) berries, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Pine grosbeak (Pinicola enucleator) feeding on Rowan (Sorbus aucuparia) berries, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Pine grosbeak (Pinicola enucleator) feeding on Rowan (Sorbus aucuparia) berries, Jyvaskyla, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / Grey-headed woodpecker male (Picus canus) Multia, Keski-Finland, January

Jussi Murtosaari / Greenish warbler (Phylloscopus trochiloides) Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Edible frog (Pelophylax esculentus) swimming, Turku, Lounais-Finland / South-Western Finland, Finland, July.

Jussi Murtosaari / Willow tit (Parus montanus) in winter, Multia, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Crested tit (Parus cristatus) in winter, Multia, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Crested tit (Parus cristatus) in winter, Multia, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Blue tit (Parus caeruleus) perched, Uto, Lounais-Finland, March. / South-Western Finland, Finland, March.

Jussi Murtosaari / Apollo butterfly (Parnassius apollo) on lichen, Foglo, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Apollo butterfly (Parnassius apollo) on clover, Foglo, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Large wall brown butterfly (Lasiommata maera) Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Black-tailed skimmer dragonfly (Orthetrum cancellatum) in flight, Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Black-tailed skimmer dragonfly (Orthetrum cancellatum) on rock, Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Muskrat (Ondatra zibethicus) swimming, Espoo, Uusimaa, Finland, May. Introduced species.

Jussi Murtosaari / Isabelline wheatear (Oenanthe isabellina) profile, Laukaa, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Chimney sweeper moth (Odezia atrata) Kumlinge, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Scarce tortoiseshell butterfly (Nymphalis xanthomelas) on pussy willow, Luhanka, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Scarce tortoiseshell butterfly (Nymphalis xanthomelas) on ground, Luhanka, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Night sky over Jyvaskyla, Keski-Finland / Central Finland, Finland, September.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding on fish, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding on fish, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding on fish, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding on fish, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) coming out of water, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) coming out of water, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding on fish, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) on rock, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) swimming, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) feeding, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) swimming, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) swimming, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) swimming, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) swimming, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Grass snake (Natrix natrix) on rock, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Bank vole (Myodes glareolus) feeding among moss, Joutsa, Keski-Finland, March. / Central Finland, Finland, March.

Jussi Murtosaari / Bank vole (Myodes glareolus) Joutsa, Keski-Finland, March. / Central Finland, Finland, March.

Jussi Murtosaari / Spotted flycatcher (Muscicapa striata) flying low over the ground, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Purple-edged copper butterfly (Lycaena hippothoe) Etela-Karjala / South Karelia, Finland, June.

Jussi Murtosaari / Purple-edged copper butterfly (Lycaena hippothoe) in grassland, Etela-Karjala / South Karelia, Finland, June.

Jussi Murtosaari / Otter (Lutra lutra) by snowy shore, Muurame, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Red crossbill (Loxia curvirostra) male in pine tree, Etela-Karjala / South Karelia, Finland, June.

Jussi Murtosaari / Red crossbill (Loxia curvirostra) fmale in pine tree, Etela-Karjala / South Karelia, Finland, June.

Jussi Murtosaari / Black-tailed godwit (Limosa limosa) Liminka, Pohjois-Pohjanmaa /Northern Ostrobothnia, Finland, June.

Jussi Murtosaari / Poplar admiral butterfly (Limenitis populi) puddling on dead slow worm, Leivonmaki National Park, Keski-Finland / Central Finland, Finland, July.

Jussi Murtosaari / Broad-bodied chaser dragonfly (Libellula depressa) resting on stick, Luhanka, Keski-Finland / Central Finland, Finland, July.

Jussi Murtosaari / Eurasian wryneck (Jynx torquilla) in tree, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Blue-tailed damselfly (Ischnura elegans) on rock, Foglo, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Purple-bordered gold moth (Idaea muricata) Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Common emerald moth (Hemithea aestivaria) Lemland, Ahvenanmaa / Aland Islands, Finland, July.

Jussi Murtosaari / Grey seal (Halichoerus grypus) hauled out, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Brimstone butterfly (Gonepteryx rhamni) on pussy willow, Jyvaskyla, Keski-Finland, April. / Central Finland, Finland, April.

Jussi Murtosaari / Eurasian pygmy owl (Glaucidium passerinum) on snowy branch, Multia, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Eurasian jay (Garrulus glandarius) albino form, Joutsa, Keski-Finland / Central Finland, Finland, December.

Jussi Murtosaari / European pied flycatcher (Ficedula hypoleuca) on post, Uto, Lounais-Finland / South-Western Finland, Finland, May.

Jussi Murtosaari / Robin (Erithacus rubecula) on ground with flowers, Lemland, Ahvenanmaa / Aland Islands, Finland, April.

Jussi Murtosaari / Eurasian baskettail dragonfly (Epitheca bimaculata) with its nymph exoskeleton, Laukaa, Keski-Finland / Central Finland, Finland, June.

Jussi Murtosaari / Yellowhammer (Emberiza citrinella) on snowy branch, Multia, Keski-Finland, January. / Central Finland, Finland, January.

Jussi Murtosaari / Great egret (Egretta alba) with fish prey by snow, Tampere, Pirkanmaa, Finland, January.

Jussi Murtosaari / Greater spotted woodpecker (Dendrocopos major) Joutsa, Keski-Finland, March. / Central Finland, Finland, March.

Jussi Murtosaari / Pale clouded yellow butterfly (Colias hyale) in flight, Laitila, Lounais-Finland / South-Western Finland, Finland, July.

Jussi Murtosaari / Red-throated diver (Gavia stellata) on Lake Teerijarvi. Jamsa, Finland. May.

Jussi Murtosaari / Golden-ringed dragonfly (Cordulegaster boltonii) resting on stem. Jyvaskyla, Finland. June.