Gerrit Vyn / Horned Puffin (Horned Puffin). Pribilof Islands, Alaska. July.

Gerrit Vyn / Horned Puffin (Horned Puffin). Pribilof Islands, Alaska. July.

Tim Fitzharris / Path through grasses and pines near marsh, Saint George Island, Florida

Tim Fitzharris / Marsh and trees, Saint George Island, Florida

David Tipling / Tufted puffin (Fratercula cirrhata) calling on cliff top, St Paul Island, Pribilof Islands, Bering Sea, Alaska.

David Tipling / Least Auklet (Aethia pusilla) pair on St Paul Island, Pribilof Islands, Alaska, USA.

Jacob S. Spendelow / Grey-crowned Rosy-Finch (Leucosticte tephrocotis), Saint Paul Island, Alaska

Sergey Gorshkov / Arctic Fox (Alopex lagopus) eating a Wrangel Lemming (Dicrostonyx vinogradovi), Wrangel Island, Russia

Sergey Gorshkov / Arctic Fox (Alopex lagopus) juvenile standing over a carcass, Wrangel Island, Russia

Sergey Gorshkov / Arctic Fox (Alopex lagopus) juvenile eating a carcass, Wrangel Island, Russia

Sergey Gorshkov / Arctic Fox (Alopex lagopus) cubs looking out of their den, Wrangel Island, Russia

Sergey Gorshkov / Arctic Fox (Alopex lagopus) pups at entrance to burrow, Wrangel Island, Russia