Emei Leaf Warbler

The Emei leaf warbler is a small passerine, measuring 11–12 cm (4.3–4.7 in) in length. Its crown is greyish-green, slightly darker at rear than in front, with a pale median crown-stripe that is poorly marked in front, and slightly but noticeably broader, paler and more distinct at rear. It has a prominent pale yellowish-tinged supercilium and a distinct dark eye-stripe; the rest of ear-coverts are paler, with faint dark mottling. Its upperparts are dull green, clearly paler than the sides of its crown and eye-stripe. Voice: The song is a clear, slightly quivering, straight trill between about 4 and 6 kHz, usually lasting 3–4 seconds. Every male displays several verse types; up to eight have been recorded from a single individual. The song is very different from those of the sympatric Claudia's leaf warbler and Kloss's leaf warbler.