Lemon-rumped Warbler

The Lemon-rumped Warbler (Phylloscopus chloronotus), also known as the Pale-rumped Warbler, is a small species of Old World warbler in the family Phylloscopidae. It is native to the Himalayas, breeding in montane forests and wintering in the southern foothills and the Purvanchal Range. The species is structurally identical to the Sichuan Leaf Warbler (Phylloscopus forresti), but differs in vocalizations. == Taxonomy == The Lemon-rumped Warbler was once grouped with the Sichuan Leaf Warbler (Phylloscopus forresti) and was previously classified within P. proregulus. Vocal and genetic studies confirmed its separation as a distinct species. Related taxa in China, including P. kansuensis and P. yunnanensis, are also now recognized as separate. == Description == 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…