Kentucky Warbler — Geothlypis formosa
This warbler has bright yellow underparts, black sideburns, and bold yellow spectacles. The back and wings are a plain olive color. It feeds mostly on the ground in dense brushy vegetation where it hops or runs. The tail is often cocked, occasionally flicked. This warbler is secretive and often it is missed being seen. It nests in ravines and bottomlands of moist woods in the mideastern to southeastern United States.