Rufous-rumped Antwren

The rufous-rumped antwren (Euchrepomis callinota) is a species of bird in subfamily Euchrepomidinae of family Thamnophilidae, the "typical antbirds". It is found in Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Panama, Peru, Suriname, and Venezuela. == Taxonomy and systematics == The rufous-rumped antwren was described by the English zoologist Philip Sclater in 1855 and given the binomial name Formicivora callinota. It was transferred to genus Terenura in 1885. There it remained until the current genus Euchrepomis was created in 2012 following phylogenetic analysis. The rufous-rumped antwren has these four subspecies: Euchrepomis callinota callinota (Sclater, PL, 1855) Euchrepomis callinota peruviana (Meyer de Schauensee, 1945) Euchrepomis callinota venezuelana (Phelps, WH & Phelps, WH Jr, 1954) Euchrepomis callinota guianensis (Blake, 1949) == Description == The rufous-rumped antwren is 10 to 12 cm (3.9 to 4.7 in) long and weighs about 7 to 9.5 g (0.25 to 0.34 oz). It is small, slender, and long-tailed, and somewhat resembles a greenlet or New World warbler. The sexes have different plumage. Adult males of the nominate subspecies E. c. callinota have blackish lores and line through the eye on an otherwise pale gray face. Their crown and nape are black, their upper back olive, their lower…