Presidio of San Francisco - Black Turnstone (U.S. National Park Service)

(Arenaria melanocephala)

USGS Photograph

A Black Turnstone similar to what may be found at the Presidio.

Natural History: The Black Turnstone forages along the shore by probing for invertebrates using its bill. It roosts in upland areas during high tide. Nesting in the Alaskan tundra, its migration peaks in August and April.

General Distribution: In the Presidio, this species can be found in areas of tidal sand and rock.

Frequency: This species is common during the fall, winter, and spring seasons.

Identifying Characteristics: The Black Turnstone is a blackish colored shorebird with black legs. It displays a whitish belly.

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