Northern Chestnut-tailed Antbird

The northern chestnut-tailed antbird, or Zimmer's antbird, (Sciaphylax castanea) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Colombia, Ecuador, and Peru. == Taxonomy and systematics == The northern chestnut-tailed antbird was originally described by the American ornithologist John Zimmer in 1932 as a subspecies of the then chestnut-tailed antbird with the trinomial name Myrmeciza hemimelaena castanea. In the early 21st century it was recognized as a separate species, M. castanea, and split from H. hemimemaena. At that time a second subspecies of it was also recognized. Some taxonomic systems call it the "northern chestnut-tailed antbird" and the reduced M. hemimelaena the "southern chestnut-tailed antbird". Other systems called the newly-separated M. castanea "Zimmer's antbird" and retained "chestnut-tailed antbird" for M. hemimelaena. A molecular phylogenetic study published in 2013 found that genus Myrmeciza, as then defined, was polyphyletic. In the resulting rearrangement to create monophyletic genera M. hemimelaena and M. castanea were moved to a newly erected genus Sciaphylax. The two subspecies of the northern chestnut-tailed antbird are the nominate S. c. castanea (Zimmer, JT, 1932) and S. c. centunculorum (M.L. Isler, A. Alvarez, P.R. Isler, Valqui, Begazo & Whitney, 2002). ==…