Wilson's Warbler (male, breeding plumage)
Family: (Parulidae) Wood-Warblers
Preferred Habitat: Thickets near water
Seasonal Occurrence: Common spring and fall; uncommon in winter.
Notes by Susan Billetdeaux: In spring plumage male Wilson's Warblers are easily identified by their black caps and yellow breasts. Most females do not have caps but have olive-gray crowns. Both sexes have yellow eye-rings which make their dark eyes seem more prominent. On the U.S. west coast Wilson's Warblers can be a bright yellow, almost orange. In our area the yellow is generally more muted and often with a greenish tinge. Wilson's Warblers are generally found in low understory plants; they are particularly fond of willow thickets.
Comments by Don Verser: Many Wilson's Warblers overwinter. Some Wilson's Warblers, particularly first fall females can be confused with Yellow Warblers. Check to see that the undertail is gray for Wilson's and not yellow as it is for Yellow Warblers.