dresserbirdsofeurope:charadriiformes;ste
Dresser/Birds of Europe: Charadriiformes; Stercorariidae
Charadriiformes--Stercorariidae (Skuas)
4 images available on two pages.
612 Buffon's Skua.
Stercorarius parasiticus.
Richardsons Skua.
Stercorarius crepidatus.