Cryptic Treehunter Cichlocolaptes mazarbarnetti

This critically endangered bird was described in 2014, and it tragically may have gone extinct by the time the paper was published. It is known from just two sites in the states of Pernambuco and Alagoas in northeastern Brazil. Plumage is mostly brown with a dark crown, black and buff stripes on the face, and reddish-orange tail. It is very similar to Alagoas Foliage-gleaner, with which it was confused for many years and also possibly extinct. Cryptic Treehunter differs by its larger size, bulkier bill, blacker crown, darker sides to the neck, and different voice. Stays inside dense rainforest in hilly terrain, especially where there are lots of epiphytes and vine tangles. Typical song is a soft rattle followed by a series of burry notes.