Phylloscopus yunnanensis

The Chinese leaf warbler is a brightly coloured small leaf warbler found only in China, about 10cm long with a wing length of 5–6cm. The bill is pointed, short and dark brown, and the tail is slightly forked or notched, almost square. Plumage varies with life stage, season and nutrition (Wikipedia, general species account).

The species is migratory, but its wintering grounds are currently unknown. It is found singly or in pairs during the breeding season and almost always keeps to tree canopies, where it feeds on insects. It has a song unique among its genus (Wikipedia, general species account).