Species: Larus hyperboreus
Glaucous 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 Blanca - goƩland bourgmestre
Informal Taxonomy
Animals, Vertebrates - Birds - Other Birds
Formal Taxonomy
Animalia - Craniata - Aves - Charadriiformes - Laridae - Larus - (Snell 1991a).
Ecology and Life History
Migration
false - false - true - Summer and winter ranges overlap somewhat in some areas; migratory status in those areas? Arrives in breeding areas in Beaufort Sea area in May, most depart by mid-September, though some, especially juveniles, may remain into November (Johnson and Herter 1989).
Non-migrant
false
Locally Migrant
false
Food Comments
In Arctic an important predator of lemmings; also predator of young alcids, ducks, and gulls. Feeds on fishes, mollusks, crustaceans and seabird eggs. Preys heavily on eggs and chicks, especially those of waterfowl, in breeding season (Johnson and Herter 1989). Large numbers may stop to feed along barrier islands, at whale carcasses, and at dumps during fall movements (Johnson and Herter 1989).
Reproduction Comments
Breeding begins late May to early June (Harrison 1978); egg laying occurs mainly mid- to late June in Beaufort Sea area (Johnson and Herter 1989). Both sexes incubate 2-3 eggs for 27-28 days (Terres 1980). Hatching begins in second week of July in Beaufort Sea area. Semi-precocial young are tended by both parents, fledge at 45-50 days, may be accompanied by adults into mid-September. Often nests in colonies, but may nest singly.
Length
69
Weight
1576
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
BREEDS: arctic coasts, islands from northern Alaska east across northern Canada, Greenland, Iceland, northern Europe to eastern Siberia. WINTERS: from southern part of breeding range south to southern California and Virginia; occasional in Hawaii; in Old World, south to northern Europe and central Siberia.

