Ole Jorgen Liodden / Pomarine Skua / Jaeger (Stercorarius pomarinus) in flight. Nordaustlandet, Svalbard, September.

Hanne & Jens Eriksen / Pomarine skua (Stercorarius pomarinus) harassed by House crows (Corvus splendens), Oman, October

Markus Varesvuo / Pomarine skua (Stercorarius pomarinus) flying, Norway, May.

Matthew Studebaker / Pomarine Jaeger (Stercorarius pomarinus), Alaska

Brent Stephenson / Adult light morph Pomarine jaeger (Stercorarius pomarinus) in breeding plumage with large tail 'spoons'. Cape St Elias, Alaska, United States. July.

Jacob S. Spendelow / Pomarine Jaeger (Stercorarius pomarinus), Alaska

Alan Murphy / Pomarine Jaeger (Stercorarius pomarinus) flying, Alaska

Gerrit Vyn / Adult Pomarine Jaeger (Stercorarius pomarinus) resting on a beach. Chukotka, Russia. July.

Gerrit Vyn / Pomarine skua / jaeger (Stercorarius pomarinus) standing on a gravel beach, Chukotka, Russia. July.

Sebastian Kennerknecht / Pomarine Jaeger (Stercorarius pomarinus) flying, Monterey Bay, California

Sue Flood / Pomarine skua {Stercorarius pomarinus} feeding on seal carcass, Canada

Roy Mangersnes / Male Pomarine Skua (Stercorarius pomarinus) in flight over arctic tundra, Barrow, Alaska, USA. June

Roy Mangersnes / Female Pomarine Skua (Stercorarius pomarinus) in flight over arctic tundra, Barrow, Alaska, USA. June

Roy Mangersnes / Female Pomarine Skua (Stercorarius pomarinus) in flight over arctic tundra, Barrow, Alaska, USA. June

Winfried Wisniewski / Pomarine Jaeger (Stercorarius pomarinus) adult in light phase, Europe

Mateusz Piesiak / Pomarine jaeger (Stercorarius pomarinus) head portrait, Poland. October.

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) adult resting on beach. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) taking off from beach. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) taking off from beach. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) standing on beach. Durham, UK. September.

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September.

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September.

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September.

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. September

Oscar Dewhurst / Pomarine skua (Stercorarius pomarinus) in flight. Durham, UK. August.