Gulls (Laridae)

Swallow-tailed Gull (Creagrus furcatus) - HBW 3, p. 621

French: Mouette à queue fourchue German: Gabelschwanzmöwe Spanish: Gaviota Tijereta

Taxonomy: Larus furcatus Néboux, 1846, Monterey, California (error = Galapagos).
Morphometric analysis consistently shows this to be a particularly distinctive species. Monotypic.

Distribution: Galapagos, mainly in E half of archipelago; also Malpelo I, off W Colombia.