216 PASSERES: Perching Birds 



VIRGINIA WARBLER 



(644. Vermivora virginiae) 4f in. 



Gray, with bright yellow chest and under tail-coverts; throat 

 usually yellow; white eye-ring conspicuous; chestnut crown 

 partly obscured by gray tips; rump bright yellow-green; belly 

 dull white. 



Female duller throughout; back brownish. 



Compare Calaveras Warbler, olive-green above and all 

 yellow below. 



CALAVERAS WARBLER 



(645a. Vermivora rubricapilla gutturalis) 4f in. 



Bright yellow below; white eye-ring; head and neck bluish gray 

 (except chestnut crown-patch, rarely visible in the field) ; back 

 olive-green, changing to bright green on rump. No white in 

 plumage except eye-ring. Female generally duller below and 

 chestnut crown-patch smaller or lacking. 



LUTESCENT WARBLER 



(646a. Vermivora celata lutescens) 4| in. 

 Whole upper parts bright olive-green, changing to bright 

 yellow-green below, darker streaked on throat and breast. 

 Without sharp markings of any sort. The yellow eye-ring is 

 hardly visible in the olive-green sides of head while it is 

 sometimes fairly conspicuous in the Dusky Warbler (a W.V. 

 near the coast of southern California). 



DUSKY WARBLER 



(646b. Vermivora celata sordida) 5 in. 



Resembles the Lutescent, but darker throughout. Above, 

 dull olive-green, with grayish wash; somewhat lighter below, 

 streaked with yellow-green. 



Rarely separable in the field, with any degree of certainty, 

 from the Lutescent. 



ORANGE-CROWNED WARBLER See Appendix. 



(646. Vermivora celata celata) 



