hetteparula Setophaga citrina

Rather small, yellow warbler that habitually flashes its white outer tail feathers. Males have distinctive black hood with yellow face; females duller with only a shadow of hood (some lack it completely). Most similar to Wilson's Warbler; always look for white in the tail on Hooded. Generally a bird of the understory in mature forest, often around patches of rhododendron. Song similar to Magnolia Warbler but stronger; "weeta-weeta-weeTEEyoo". Call sounds like two shot glasses being chinked together.