Elegant Crescentchest

The elegant crescentchest (Melanopareia elegans) is a species of bird in the family Melanopareiidae. It is found in Ecuador and Peru. == Taxonomy and systematics == The crescentchests (genus Melanopareia) were previously included in family Rhinocryptidae, the tapaculos. A 2010 publication confirmed earlier work and created their present genus. The elegant crescentchest and the Marañón crescentchest (Melanopareia maranonica) might form a superspecies. Two subspecies of elegant crescentchest are recognized, the nominate Melanopareia elegans elegans and M. e. paucalensis. == Description == The elegant crescentchest is 14.5 cm (5.7 in) long. Males weigh 16.0 to 20.2 g (0.56 to 0.71 oz) and females 15.5 to 19.0 g (0.55 to 0.67 oz) Males of both subspecies have a black crown, nape, and mask and a creamy supercilium. The back and rump are olive-brown. Its throat is white or pale buff that is darker around the margins and a black "bib" is below it. The upper chest is dark chestnut fading to tawny on the flanks and belly. The nominate female is similar, but the crown is sooty and there is no dark chestnut on the chest. The female M. e. paucalensis is like the nominate except that its crown is the same…