Spix’s Warbling Antbird

Spix's warbling antbird or Spix's antwarbler, (Hypocnemis striata) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is endemic to Amazonian Brazil. == Taxonomy and systematics == Spix's warbling antbird was described and illustrated by the German naturalist Johann Baptist von Spix in 1825 and given the binomial name Thamnophilus striatus. The current genus Hypocnemis was introduced in 1847. It was later, and for a long time, considered a subspecies of the then warbling antbird Hypocnemis cantator sensu lato. Following a study published in 2007 that assessed vocal differences and to a lesser degree differences in plumages among the warbling antbird's subspecies, it and several others were elevated to full species status. Spix's warbling antbird has three subspecies, the nominate H. s. striata (Spix, 1825), H. s. implicata (Zimmer, JT, 1932), and H. s. affinis (Zimmer, JT, 1932). In the 2007 paper, Isler et al. noted that each might represent a full species but conservatively recommended that they be treated as subspecies pending further investigation. In addition, they suggest that the westernmost population of implicata probably represents a new subspecies or species that they call taxon novum. It awaits a full description. == Description…