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

Bence Mate / Herring gull (Larus argentatus) mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / Gull mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

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.

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

Ole Jorgen Liodden / Arctic tern (Sterna paridisea) mobbing, Arctic fox (Alopex lagopus) in Spitsbergen, Svalbard, Norway, July.

Bence Mate / Barn swallow (Hirundo rustica) mobbing Euasian Kestrel (Falco tinnunculus) Pusztaszer, Hungary, June.

Mike Wilkes / Carrion crows (Corvus corone) harassing Buzzard (Buteo buteo) trying to steal its prey, Warwickshire, England, UK, March

SCOTLAND: The Big Picture / Buzzard( buteo buteo) mobbing White Tailed Eagle (Haliaeetus albicilla) flying against blue sky fighting, Scotland, UK, June.

Markus Varesvuo / Arctic tern (Sterna paradisaea) mobbing Grass snake (Natrix natrix) on rocks below. Uto, Western Finland. June.

Chris Gomersall / Great skua (Stercorarius skua) attacking adult Northern gannet (Morus bassanus) in flight. Boreray, Saint Kilda, Scotland. June 2009.

David Tipling / Common cuckoo (Cuculus canorus) male being mobbed by host species Meadow pipit (Anthus pratensis) Peak District, England, UK. May.