Benjam Pontinen / Brown hare (Lepus europaeus) running past hay barn in snow storm, Lapua, Finland, March. WINNER, Animals in their Environment category, 2011 WILDLIFE PHOTOGRAPHER OF THE YEAR competition

Benjam Pontinen / Siberian flying squirrel looking out of nest hole in tree {Pteromys volans} Finland, Europe

Benjam Pontinen / Siberian flying squirrel in nest {Pteromys volans} Finland.

Benjam Pontinen / Siberian flying squirrels in nest {Pteromys volans} , Finland.

Benjam Pontinen / Siberian flying squirrel feeds in alder tree. Nurmo, Finland.

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) feeding on birch buds, Lapua, Finland, April.

Benjam Pontinen / Siberian flying squirrel flying (Pteromys volans) in flight, Lapua, Finland, April.

Benjam Pontinen / Siberian flying squirrels (Pteromys volans) courtship, Lapua, Finland, April.

Benjam Pontinen / Siberian flying squirrel (Pteromys volans). Lapua, Finland, April.

Benjam Pontinen / Siberian flying squirrel flying (Pteromys volans). mating flight, Lapua Finland, April.

Benjam Pontinen / Siberian flying squirrels (Pteromys volans) courting pair, Lapua Finland, April.

Benjam Pontinen / Siberian flying squirrel (Pteromys volans), on branch, Lapua Finland, April. Note flat tail which helps steer when flying

Benjam Pontinen / Siberian flying squirrel (Pteromys volans), pair mating, Lapua Finland, April.

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) rival males fighting during breeding season, Lapua Finland, April.

Benjam Pontinen / Eurasian cranes (Grus grus ) flying at dusk before roosting, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, September

Benjam Pontinen / Flock of Eurasian cranes (Grus grus ) flying at dusk before roosting, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, September

Benjam Pontinen / Flock of Eurasian cranes (Grus grus ) flying at dusk before roosting, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, September .

Benjam Pontinen / De Geer moraine ridges, area of glacial deposits, Kvarken, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, June

Benjam Pontinen / DeGeer moraines, deposited by glaciers, Bjorko Island, Korsholm, Kvarken, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, August

Benjam Pontinen / De Geer moraine ridges, areas of debris deposited by glaciers, Kvarken, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, August 2016.

Benjam Pontinen / Sea-buckthorn (Hippophae rhamnoides ) growing among rocks, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, May 2010.

Benjam Pontinen / Flock of Eurasian cranes (Grus grus ) flying at dusk before roosting, High Coast / Kvarken Archipelago UNESCO Natural World Heritage Site, Finland, September 2016

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) eating Rowan (Sorbus) berries, Finland

Benjam Pontinen / Siberian flying squirrel (Pteromys volans), one month baby, Seinajoki, Finland, August

Benjam Pontinen / Siberian flying squirrel (Pteromys volans), one month baby, Seinajoki, Finland, July

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) sat in tree at dusk with house in the background, Seinajoki, Finland, August

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) with head poking out of nest hole in tree, Lapua, Finland, July

Benjam Pontinen / Siberian flying squirrel (Pteromys volans) peering out from nest made of lichen, Lapua, Finland, June

Benjam Pontinen / Siberian flying squirrel {Pteromys volans} in tree feeding, Nurmo, Finland, Europe.

Benjam Pontinen / Siberian flying squirrel in flight {Pteromys volans} Finland

Benjam Pontinen / Siberian flying squirrel {Pteromys volans} feeding in Rowan tree, Nurmo, Finland.

Benjam Pontinen / Siberian flying squirrel {Pteromys volans} feeding in Alder tree, Nurmo, Finland.

Benjam Pontinen / Siberian flying squirrel {Pteromys volans} Nurmo Finland

Benjam Pontinen / Siberian flying squirrel in flight {Pteromys volans} Nurmo Finland

Benjam Pontinen / Siberian flying squirrel in flight {Pteromys volans} Finland

Benjam Pontinen / Dotterel {Eudromias morinellus} in breeding plumage, North Sweden