Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, Norway, August.

Ismaele Tortella / Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August.

David Gallan / Desperately thirsty eastern grey kangaroos (Macropus giganteus) drink from a bird bath following a bushfire in Tathra, New South Wales, Australia. Water holes had dried up due to drought and food was...

Espen Bergersen / Northern fulmar (Fulmarus glacialis) in front of the Seljalandsfoss waterfall, Iceland. May

Espen Bergersen / Ruddy turnstone (Arenaria interpres) in water, Iceland

Espen Bergersen / Common Loon (Gavia immer) flapping wings in water, Iceland, May.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) male holding female under water as part of copulation. Iceland

Espen Bergersen / Pair of Harlequin duck (Histrionicus histrionicus) in river stream. Myvatn, Iceland.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) in river stream. Myvatn, Iceland. May.

Espen Bergersen / Barrow's goldeneye (Bucephala islandica) in partly frozen lake. Iceland, May.

Espen Bergersen / Whooper swan (Cygnus cygnus). Iceland

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) Jokulsarlon lake. Iceland 2016