Gulls (Laridae)

Ross's Gull (Rhodostethia rosea) - HBW 3, p. 620

French: Mouette rosée German: Rosenmöwe Spanish: Gaviota Rosada
Other common names: Rosy Gull

Taxonomy: Larus roseus MacGillivray, 1824, Melville Peninsula, Canada.
Relationships rather obscure. Resembles Larus minutus in size and plumage sequence, but with very different adult plumage. Morphometric analysis suggests it is an early derivative of a primitive larid or of a hooded larid. Monotypic.

Distribution: NE Siberia, from Taymyr Peninsula E to R Kolyma; also locally in Greenland, and irregularly in Canada. Winters mainly in Arctic. Limits of distribution very poorly known for all seasons.