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| Subspecies: | Unknown |
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| Est. World Population: | |
| CITES Status: | NOT LISTED |
| IUCN Status: | Least Concern |
| U.S. ESA Status: | NOT LISTED |
| Body Length: | |
| Tail Length: | |
| Shoulder Height: | |
| Weight: | |
| Top Speed: | |
| Jumping Ability: | (Horizontal) |
| Life Span: | in the Wild |
| Life Span: | in Captivity |
| Sexual Maturity: | (Females) |
| Sexual Maturity: | (Males) |
| Litter Size: | |
| Gestation Period: | |
Habitat:
This species can be found on a variety of habitats, including coasts, estuaries, bays, mudflats and fields, breeding in open habitats usually on low rocky islands in freshwater and hypersaline lakes. Its breeding season begins in early May, laying in April and May in colonies. It feeds on insects, grubs, the eggs and young of birds, rodents, rubbish, grain and berries (del Hoyo et al. 1996).
Range:
The breeding range of this species in in western North America from Northwest Territories (Canada) south to eastern California and Colorado (USA). It winters in coastal regions from south-west Canada to south-west Mexico (del Hoyo et al. 1996).