Hypocnemis cantator ochrogyna The Rondonia warbling antbird or Rondonia antwarbler[2], (Hypocnemis ochrogyna) is a Vulnerable species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds".

Their flight feathers are brown with yellowish olive-brown edges and their wing coverts black with white tips.

[7] The Rondonia warbling antbird's diet and foraging behavior are not known, but are assumed to be very similar to those of its previous "parent" H. cantator, which see here.

The species' most common call is described as similar to that of the Guianan warbling antbird ("a brief repetitive series of 2–4 (typically three) similar, clear notes of essentially level peak frequencies, with the final notes often becoming raspy"[9]).

[7] The IUCN originally in 2009 assessed the Rondonia warbling antbird as being of Least Concern but in 2017 uplisted it to Vulnerable.

Its estimated population of 500,000 to one million mature individuals is decreasing at a significant rate.

[1] "The main threat to this species is forest clearance for agriculture and cattle ranching.