Overview
Distribution
National Distribution
United States
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Type of Residency: Year-round
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Global Range: BREEDING: salt marshes of the San Francisco Bay area, ranging from Tomales Bay to Carquinez Strait to San Jose. NON-BREEDING: along California coast from the breeding range to San Diego, casual north to northern California (AOU 1957).
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Physical Description
Size
Diagnostic Description
Differs from Pacific Coast subspecies Arizela in being much smaller (mean male length 10.7 cm vs. 12.0 cm) and slightly darker, especially on the sides and flanks (Ridgway 1902).
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Ecology
Habitat
Comments: Salt marshes. BREEDING: Nests just above ground or over water, in thick herbaceous vegetation, often at base of shrub or sapling, sometimes higher in weeds or shrubs up to about 1 m.
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Migration
Non-Migrant: Yes. At least some populations of this species do not make significant seasonal migrations. Juvenile dispersal is not considered a migration.
Locally Migrant: Yes. At least some populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: No. No populations of this species make annual migrations of over 200 km.
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Trophic Strategy
Comments: Eats various small invertebrates obtained among low plants.
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Life History and Behavior
Reproduction
Clutch size 3-6 (usually 4). Incubation 11-13 days, by female. Young tended by both parents, leave nest at 8-10 days.
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Conservation
Conservation Status
National NatureServe Conservation Status
United States
Rounded National Status Rank: N2 - Imperiled
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NatureServe Conservation Status
Rounded Global Status Rank: T2 - Imperiled
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Wikipedia
Salt Marsh Common Yellowthroat
The Salt Marsh Common Yellowthroat, (Geothlypis trichas sinuosa), is a subspecies of the Common Yellowthroat, a New World warbler.[2]
The Salt Marsh Common Yellowthroat has experienced a dramatic 80% decline from the early 20th century through 1976.[2] It is a species of concern for protection in efforts to restore Chelsea Wetlands in Hercules, California.[3]
References
- ^ BirdLife International (2004). Geothlypis trichas. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 9 May 2006. Database entry includes justification for why this species is of least concern
- ^ a b Common Yellowthroat, National Audubon Society, access date 11-02-2009
- ^ Chelsea Wetlands Restoration, City of Hercules website, 23-06-2008, access date 08-02-2009
 | This Parulidae-related article is a stub. You can help Wikipedia by expanding it. |
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