Species: Larus heermanni
Heermann'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 Ploma - Goéland de Heermann
Informal Taxonomy
Animals, Vertebrates - Birds - Other Birds
Formal Taxonomy
Animalia - Craniata - Aves - Charadriiformes - Laridae - Larus
Ecology and Life History
Short General Description
A bird (gull).
Migration
true - true - true - Post-breeding migrants move up the Pacific coast as far north as southern British Columbia; early migrants appear in May in British Columbia and numbers peak in mid-October, after which numbers decline rapidly as birds move south (Campbell et al. 1990).
Non-migrant
true
Locally Migrant
true
Food Comments
Eats marine fishes, crustaceans, and mollusks. May pirate fish from pelicans and cormorants; also scavenges for food along beaches and shores.
Reproduction Comments
Lays two to three eggs April-June (Terres 1980). Usually only two young produced from three-egg clutches.
Length
48
Weight
500
Conservation Status
NatureServe Global Status Rank
G4
Global Status Last Reviewed
1997-02-05
Global Status Last Changed
1997-02-05
Other Status
NT - Near threatened
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=__&US.AZ=__&US.CA=__&US.OR=__&US.WA=__" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
FG - 20,000-2,500,000 square km (about 8000-1,000,000 square miles) - FG - BREEDING: mainly on islets off Pacific coast of Baja California, in Gulf of California, and locally off the coast of Mexico south to Sinaloa and Nayarit. Isolated breeding in coastal California (AOU 1998). NON-BREEDING: from breeding grounds north to southern British Columbia, common in California; south to Pacific coast of Guatemala (AOU 1998).
Global Range Code
FG
Global Range Description
20,000-2,500,000 square km (about 8000-1,000,000 square miles)