Species: Larus thayeri
Thayer's Gull
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Aves
Order
Charadriiformes
Family
Laridae
Genus
Larus
NatureServe
Classification
Other Global Common Names
Gaviota de Thayer - goéland de Thayer
Informal Taxonomy
Animals, Vertebrates - Birds - Other Birds
Formal Taxonomy
Animalia - Craniata - Aves - Charadriiformes - Laridae - Larus - "
Ecology and Life History
Migration
false - false - true - Arrives in breeding areas late May-early June.
Non-migrant
false
Locally Migrant
false
Food Comments
Feeds on fishes, mollusks, crustaceans, marine worms, carrion, and garbage. Feeds on the surface of the water, along beaches, around harbors and boats.
Reproduction Comments
Breeding begins early to mid-June (Harrison 1978). Usually 2-3 eggs; incubation 25-28 days, by both sexes. Nestlings semi-precocial, tended by both parents until fledging in late Aug. Usually nests in colonies, a few pairs up to 200 or so; about 50 pairs typical (Johnson and Herter 1989).
Ecology Comments
Similar to herring gull.
Length
58
Weight
1093
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1996-11-27
Global Status Last Changed
1996-11-27
Other Status
LC - Least concern
Distribution
Conservation Status Map
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Global Range
BREEDING: islands and adjacent northern peninsulas of Canadian Arctic, northwestern Greenland. NON-BREEDING: coastal western North America primarily from southern British Columbia south to southern California and central Baja California. Casual east and throughout interior.