Sea Gulls / Gull Species

Black-tailed Gull, Larus crassirostris


Seagull / Gull Information and Photos

Herring Gull, Larus argentatus - collecting nesting material

Species

FAMILY LARIDAE

Genus Larus

Heermann’s Gull (Larus heermanni) Genus Rissa

Genus Pagophila

Genus Rhodostethia

Genus Xema

Genus Creagrus

The Laridae are known from fossil evidence since the Early Oligocene, some 30-33 mya. A fossil seagull from the Late Miocene of Cherry County, USA is placed in the prehistoric genus Gaviota; apart from this and the undescribed Early Oligocene fossil, all prehistoric species are at least tentatively assigned to the modern genus Larus, q.v.

Swallow-tailed Gull



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