Hypocnemis subflava, Cabanis, 1873

Pedroza, Diego, Melo, Tomaz Nascimento de, Machado, Tatiana Lemos da Silva, Guimarães, David Pedroza, Lima, Jônatas M. & Guilherme, Edson, 2020, Birds of Humaitá Forest Reserve, Acre, Brazil: an important forest fragment in south-west Amazonia, Bulletin of the British Ornithologists’ Club 140 (1), pp. 58-79 : 62

YELLOW-BREASTED WARBLING ANTBIRD Hypocnemis subflava

Endemic; bamboo forest specialist. Silva et al. (2015) made the first record in HFR, and DP monitored the species in 2017. In HFR, the species occurs exclusively in bamboo forest, foraging for prey in bamboo culms and leaves. Population density was estimated in 16-ha grids, with some individuals being banded, at 0.55–0.66 pairs per ha in bamboo patches ( Pedroza & Guilherme 2019). In DPG’s 2018 study of mixed-species flocks, H. subflava was a constant presence in flocks led by Thamnomanes schistogynus and the flock’s home range coincided with bamboo patches.