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Wilson's Warbler (Cardellina pusilla)

Wilson's Warbler (Cardellina pusilla)

Wilson's Warbler (Wilsonia pusilla)


Class: Aves
Family: Parulidae
Common Name: Wilson's Warbler
Genus: Cardellina
Species Name: pusilla

About The Wilson's Warbler

A small (4 ¾ inches) wood warbler, Wilson’s Warbler is most easily identified by its black cap and yellow throat and breast. Other field marks include an olive-green back, thin black bill, and orange legs. The female Wilson’s Warbler is duller yellow-green and lacks the male’s black cap. Wilson’s Warbler breeds across a large portion of central Canada and Alaska. Smaller breeding populations occur south of the Canadian border in Maine, along the Pacific coast, and at higher elevations in the Rocky Mountains. Most Wilson’s Warblers winter in Mexico and Central America, but a small number spend the winter in south Texas and along the Gulf Coast of eastern Texas and Louisiana. In summer, Wilson’s Warbler breeds in overgrown thickets, clearings, and other semi-open habitats near woodland. During the winter, this species inhabits tropical forests as well as overgrown fields and scrubland. On migration, Wilson’s Warbler may be found in a variety of habitat types similar to those used for breeding. This species primarily eats insects and spiders, but occasionally also eats fruit. Despite its bright colors, Wilson’s Warbler is often difficult to observe due to its small size and preference for habitats with thick vegetation. With the aid of binoculars, Wilson’s Warblers may be seen deep in the undergrowth gleaning insects from branches. Wilson’s Warbler is most active during the day, but, like many migratory songbirds, this species migrates at night.



Rights Holder: Unknown
Bibliographic Citation: Rumelt, Reid B. Cardellina pusilla. June-July 2012. Brief natural history summary of Cardellina pusilla. Smithsonian's National Museum of Natural History, Washington, D.C.

Trips Where Observed

Alaska
Alaska 2010
Mexico to Panama
Mexico, Baja California Sur
Mexico, Nayarit
Mexico, Veracruz
Newfoundland
San Francisco 2007
Southeast Arizona

Member Lifelists

California
Illinois
Mexico
North America
San Francisco
United States
World

Sites Where Observed

Location
Date
Notes
10/13/2007
Very common throughout Veracruz
1/4/2008
Old Town
2/6/2009
5/17/2010
Seen about 50 miles offshore.
7/16/2014
With fledgelings

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