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Data for:
San Mateo, California, United States
List:

Charadriiformes > Laridae

Western Gull

Larus occidentalis

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Identification

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Large, stocky gull with a stout bill. Strictly found at coastal sites. Most common gull of California beach parking lots. Adults have much darker gray back than Herring Gull; immatures are similarly brown, but note the thick bill. Frequently hybridizes with Glaucous-winged Gull at the northern edge of its range.

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