Lemon-rumped Warbler

The Lemon-rumped Warbler is 9–10 cm long and weighs about 4.6–5.1 g. It has a whitish crown stripe bordered by darker olive-brown sides, a pale line above the eye, and a dark eyestripe that often curves downward. The upperparts are greenish-grey, and the rump is yellowish or whitish, which gives the species its name. The wings are grey-brown with green edging and usually show one or two pale wingbars. The underparts are whitish or buff with some grey along the breast sides. The bill is dark with a yellowish or orange base to the lower mandible, and the legs are dark grey. Voice: Two song types are reported: a short trill followed by a lower trill lasting 2–4 seconds, and a longer, varied series of notes that may last several minutes. The call is a sharp, high “pist” or “psit.”