TAPACULO DE COLARINHO a.k.a. collared crescentchest (Melanopareia torquata) is a species of bird in the Melanopareiidae family. It is found in Bolivia, Brazil, and Paraguay. Its natural habitat is dry savanna.
The olive-crowned crescentchest (Melanopareia maximiliani) Crescentchests are a genus of birds from S. America -- long been placed with the tapaculos in the Rhinocryptidae family. Their placement there has been questioned & in 2007 the genus was placed in its own family, Melanopareiidae by the South American Classification Committee. Subsequently the family was formerly erected in 2009.