Black-and-Yellow Tanager

The Black-and-Yellow Tanager (Chrysothlypis chrysomelas) is a fairly small passerine bird. This tanager is an endemic resident in the hills of Costa Rica and Panama. They occur in small groups, or as part of a mixed-species feeding flock. This species feeds on small fruit, usually swallowed whole, from insects, and spiders. The neat cup nest is built on a tree branch. The eggs are undescribed.

The black-and-yellow tanager weighs 12.5 grams and measures about 12 centimeters in length. The mature male has a black back, wings, and tail, together with a brilliant yellow head, rump, and underparts. White lines line the wings. A black mark on the lores distinguishes the male of C. c. ocularis from the female. The female has a whitish throat and lower belly in Costa Rica and extreme western Panama, but otherwise has olive upperparts and yellow underparts. She might be mistaken for a female yellow-backed tanager or a warbler. Young females resemble adults.