ZSSD / Hawaiian Crow (Corvus hawaiiensis) using stick tool to reach food, native to Hawaii

ZSSD / Hawaiian Crow (Corvus hawaiiensis) using stick tool to reach food, native to Hawaii

Mark Hamblin / Raven (Corvus corax) adult calling from rock in mountain habitat, Scotland, UK. November. Third place in British Birds Bird Photograph of the Year competition 2016.

Bence Mate / Hooded crow (Corvus cornix) mobbing Buzzard (Buteo buteo) Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / White tailed sea eagle (Haliaeetus albicilla) and Hooded crow (Corvus cornix) in snow, Lake Csaj, Kiskunsagi National Park, Hungary. January.

Bence Mate / Jay (Garrulus glandarius) jumping into the air, Pusztaszer, Kiskunsagi National Park, Hungary, November.

Bence Mate / Juvenile White tailed eagle (Haliaeetus albicilla)in flight, with Hooded crow (Corvus cornix) mobbing it, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Donald M. Jones / Common Raven (Corvus corax) walking in snow, western Alberta, Canada

Donald M. Jones / Common Raven (Corvus corax) walking in snow, western Alberta, Canada

Donald M. Jones / Common Raven (Corvus corax) in snow, western Alberta, Canada

Staffan Widstrand / Raven (Corvus corax) mobbing Gyrfalcon (Falco rusticolus), Hornoya Island, Varanger Peninsula, Norway, March.

Bence Mate / Group of Great egrets (Ardea alba) reflected in still water, with Hooded crows (Corvus cornix), Lake Csaj, Pusztaszer, Hungary. Winner of the Portfolio category of the Terre Sauvage Nature Images Awar...