Species: Wilsonia pusilla
Wilson's Warbler
Species
Show on Lists
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Aves
Order
Passeriformes
Family
Parulidae
Genus
Wilsonia
NatureServe
Classification
Other Global Common Names
Chipe Corona Negra - paruline à calotte noire
Informal Taxonomy
Animals, Vertebrates - Birds - Perching Birds
Formal Taxonomy
Animalia - Craniata - Aves - Passeriformes - Parulidae - Wilsonia
Ecology and Life History
Migration
false - false - true - Migrants arrive in Sierra Nevada nesting areas in late May; on California coast, males begin to arrive in late March (Stewart et al. 1978). Migrants arrive in the southern winter range in mid-September, depart by mid-May (Stiles and Skutch 1989).
Non-migrant
false
Locally Migrant
false
Food Comments
Diet includes insects (wasps, ants, flies, beetles, caterpillars, etc.). Foraging occurs throughout available vegetation. Most food is obtained from leaves by gleaning while perched or flying (Stewart et al. 1978). In winter in Mexico, this warbler forages in the upper third of the canopy where the foliage is fairly dense and leaf size is small; leaves are the most common feeding substrate (Rappole and Warner 1980).
Reproduction Comments
Clutch size commonly is 3-4 in coastal California, 4-5 in the Sierra Nevada, 5-6 in Alaska. Incubation, by female, lasts 12-15 days. Young are tended by both parents, leave nest at 9-10 days in California. Some males are polygynous in the Sierra Nevada (Stewart et al. 1978).
Ecology Comments
In California, territory size in different habitats ranges from about 0.2 to 2.0 ha (Stewart et al. 1978).<br><br>Usually this warbler is solitary and territorial in winter, but it may join mixed flocks (Stiles and Skutch 1989).
Length
12
Weight
7
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
2009-03-24
Global Status Last Changed
1996-12-03
Other Status
LC - Least concern
Distribution
Conservation Status Map
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Global Range
H - >2,500,000 square km (greater than 1,000,000 square miles) - H - Breeding range extends from most of Alaska eastward across central Canada to Labrador and Newfoundland, and south to southern Alaska, southern California, Nevada, Utah, northern New Mexico, central Saskatchewan, southern Manitoba, northern Great Lakes region, northeastern New York, northern Vermont, central Maine, and Nova Scotia (AOU 1998). <br><br>Primary winter range extends from coastal California (rare), southern Baja California, southern Sonora, southern Texas, southern Louisiana, southern Mississippi (rare), southern Alabama (rare), and Florida south through Middle America (rarely in the Yucatan Peninsula) to Panama (AOU 1998).
Global Range Code
H
Global Range Description
>2,500,000 square km (greater than 1,000,000 square miles)