Rufous-capped Antshrike

The rufous-capped antshrike (Thamnophilus ruficapillus) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Argentina, Bolivia, Brazil, Paraguay, Peru, and Uruguay. == Taxonomy and systematics == The rufous-capped antshrike was described by the French ornithologist Louis Pierre Vieillot in 1816 and given its current binomial name Thamnophilus ruficapillus. It and the rufous-winged antshrike (T. torquatus) are sister species. The South American Classification Committee of the American Ornithological Society is considering a proposal to lump them as a single species. In addition to the possibility of the lump, the rufous-capped antshrike's taxonomy is further unsettled. The International Ornithological Committee and the Clements taxonomy assign it these five subspecies: Thamnophilus ruficapillus jaczewskii Domaniewski, 1925 Thamnophilus ruficapillus marcapatae Hellmayr, 1912 Thamnophilus ruficapillus subfasciatus Sclater, PL & Salvin, 1876 Thamnophilus ruficapillus cochabambae (Chapman, 1921) Thamnophilus ruficapillus ruficapillus Vieillot, 1816 However, BirdLife International's Handbook of the Birds of the World (HBW) treats the first three as the "northern rufous-capped antshrike" (T. subfasciatus) and the other two as the "southern rufous-capped antshrike" (T. ruficapillus). Clements does group them as the "Rufous-capped Antshrike (Northern)" and "Rufous-capped Antshrike (Southern)" within the single species. This article follows the one-species, five-subspecies…