Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Yellow-tailed Oriole, Icterus mesomelas, is a passerine bird in the New World family Icteridae. It breeds from southern Mexico to western Peru and northwestern Venezuela; in Peru it also lives in a river valley corridor. The Yellow-tailed Oriole is 22-23 cm long and weighs 70 g. It is mainly yellow with a black back, lower face and upper breast. The wings are black with a yellow epaulet and the tail is black with yellow sides. This is the only oriole with prominent yellow in the tail, hence the species'' name. The sexes are similar, but young birds have the black on the back and tail replaced with olive-green. The calls of this species include a chick and a weechaw. The song is a melodic repetition of rich whistles, chuck, chuck-yeeaow. It is often given as a duet, with the female''s response following or overlapping the male''s longer phrases.