About Geothlypis formosa (A.Wilson, 1811)
Adult Kentucky warblers (Geothlypis formosa) are olive-green across their back and nape, and bright yellow from the throat down to the belly. They have a faint black tint on their crown, and a large black facial mask marked by a yellow pattern that runs from the beak and encircles the eyes, resembling a pair of spectacles. Female Kentucky warblers have slightly less black on the sides of their head, while immature birds may have almost no black at all.
This species has the following measurements: length 5.1 in (13 cm), weight 0.5–0.5 oz (13–14 g), and wingspan 7.9–8.7 in (20–22 cm).
Kentucky warbler is a scarce bird with a large range, most commonly found in moist deciduous forests. It is migratory: it spends summer in the central and eastern United States, often ranging as far north as Wisconsin to Pennsylvania. In fall and winter it migrates non-stop across the Gulf of Mexico to the Yucatán Peninsula and the many islands of the Caribbean. In 2007, an individual Kentucky warbler was sighted as far west as Farmington, New Mexico.
