Brown-backed Chat-Tyrant

The brown-backed chat-tyrant (Ochthoeca fumicolor) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela. == Taxonomy and systematics == The brown-backed chat-tyrant's taxonomy is unsettled. The IOC, the Clements taxonomy, and BirdLife International's Handbook of the Birds of the World (HBW) assign it these four subspecies: O. f. ferruginea Zimmer, JT, 1937 O. f. fumicolor Sclater, PL, 1856 O. f. brunneifrons Berlepsch & Stolzmann, 1896 O. f. berlepschi Hellmayr, 1914 However, the South American Classification Committee of the American Ornithological Society (SACC) includes a fifth subspecies, O. f. superciliosa, that the other systems had also long included. It had been originally described in 1870 as a species and the SACC notes that at least one author early in the twentieth century continued to recognize it as one. HBW recognized that taxon as the rufous-browed chat-tyrant in 2016, Clements in 2022, and the IOC in 2023. This article follows the four-subspecies model. == Description == The brown-backed chat-tyrant is 14.5 to 16 cm (5.7 to 6.3 in) long and weighs 16 to 19 g (0.56 to 0.67 oz). The sexes have much the same plumage though females have…