Townsend's WarblerSetophaga townsendi
4 1/4-5" (11-13 cm). Adult male has black crown, nape, ear patch, throat, and bib, and olive green back. Face and breast bright yellow; sides heavily streaked with black; white belly. Wings and tail dusky, with 2 white wing bars and white outer tail feathers. In winter, in male, female, and immature, black bib is replaced by dark streaking and black elsewhere becomes dusky olive.