Loic Poidevin / Northern ravens (Corvus corax) interacting in snow, Leon, Spain, February.

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.

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

Sven Zacek / Ravens (Corvus corax) fighting in bog during snowfall, Tartumaa, Estonia. December.

Espen Bergersen / Gyrfalcon (Falco rusticolus) and Raven (Corvus corax) in flight, Hornoya bird cliff, Finnmark, Norway. March

Espen Bergersen / Common raven (Corvus corax) pair in courtship display, flying upsidedown and calling, Hornoya bird cliff, Norway. March.

Markus Varesvuo,Markus Varesvuo / Pair of Common ravens (Corvus corax) displaying, Vardo, Norway, March.

Markus Varesvuo,Markus Varesvuo / Commen raven (Corvus corax) flying in falling snow, Vardo, Norway, March.

Markus Varesvuo / Raven (Corvus corax) in flight, Norway, April

Markus Varesvuo / Common Raven (Corvus corax) two in flight during snow storm, Kuusamo, Finland April

Markus Varesvuo / Common Raven (Corvus corax) huddled down amidst snow storm, Utajarvi Finland, February

Staffan Widstrand / Eurasian / Grey wolf (Canis lupus) watching flying flock of Common raven (Corvus corax) Kuhmo, Finland. September.

Lassi Rautiainen / Two Common ravens (Corvus corax) in flight through snow, Finland, April

Lassi Rautiainen / Common raven (Corvus corax) perched in snow beside birch tree, Finland, March

Markus Varesvuo / Raven (Corvus corax) in flight, Norway, April

Niall Benvie / A pair of Ravens (Corvus corax) perched in bleached out pine tree, Estonia, March 2008

Wild Wonders of Europe / Máté / Raven (Corvus corax) in flight carrying food, Fisher pond, Prypiat area, Belarus, June 2009

Wild Wonders of Europe / Hermansen / Common raven (Corvus corax) calling, beak open, The Burren, County Clare, Ireland, June 2009

Wild Wonders of Europe / Hermansen / Raven (Corvus corax) in flight, The Burren, County Clare, Ireland, June 2009

Wild Wonders of Europe / Hermansen / Raven (Corvus corax) in flight, silhouetted, The Burren, County Clare, Ireland, June 2009

Wild Wonders of Europe / Hermans / Raven (Corvus corax) on cliff top, Cliffs of Moher, County Clare, Ireland, June 2009

Wild Wonders of Europe / Hermans / Raven (Corvus corax) Cliffs of Moher, Ireland, June 2009

Angelo Gandolfi / Raven (Corvus corax). Atlas range, Morocco.

Wild Wonders of Europe / Relanzón / Common raven (Corvus corax) perched on rock, La Caldera de Taburiente National Park, La Palma, Canary Islands Spain, March 2009

Guy Edwardes / Common raven {Corvus corax} in flight, Gigrin Farm, Rhayader, Powys, Wales, UK, January

Ian McCarthy / Common raven {Corvus corax} landing on snow, Bryce Canyon NP, Utah, USA

Markus Varesvuo / Seven Ravens (Corvus corax) perched on dead tree in the snow, Utaj?i, Finland, February

Markus Varesvuo / Raven (Corvus corax) in flight, Kuusamo, Finland, April

Markus Varesvuo / Common raven (Corvus corax) in flight, Kuhmo, Finland, March

Rolf Nussbaumer / Common raven, juvenile {Corvus corax} Norway.

Mike Read / Common buzzard {Buteo buteo} and Raven {Corvus corax} share rabbit carcass. Wales, UK

Dietmar Nill / Common raven portrait (Corvus corax) Germany

Bengt Lundberg / Common raven (Corvus corax) juveniles in tree Sweden

Georgette Douwma / Raven (Corvus corax) standing on grassy cliff top. England UK

Roland Seitre / White Stork (Ciconia ciconia) group and Common Raven (Corvus corax) foraging at garbage dump, Morocco

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

Michael Quinton / Common Raven (Corvus corax) checking out tourist, Yellowstone National Park, Wyoming

Michael Quinton / Common Raven (Corvus corax) using its beak to open a snowmobile's storage compartment in search of food, Yellowstone National Park, Wyoming

Jim Brandenburg / Raven Lake surrounded by autumn colored forest, Minnesota

David Pike / Common raven (Corvus corax) feeding on bird carcass, Marlborough Downs, Wiltshire, England, UK, October.

Staffan Widstrand / RF - Two Raven (Corvus corax) perched in tree, Vitbergets Nature Reserve, Vasterbotten, Sweden (This image may be licensed either as rights managed or royalty free.)

Staffan Widstrand / Raven (Corvus corax) flying, Vitbergets Nature Reserve, Vasterbotten, Sweden