DUSKY-TAILED FLATBILL Ramphotrigon fuscicauda

Species associated with bamboos. Guilherme (2009) was the first observer to record R. fuscicauda in HFR. Ecologically more flexible than R. megacephalum, it occurs in both bamboo-dominated habitats and areas without bamboo, although it is commonly found on bamboo, and is observed foraging close to R. megacephalum (Melo & Guilherme 2016) . Density of R. fuscicauda along a 10-km transect in HFR was estimated at 0.8 individuals/km 2. DPG considered this species to be another constant participant in mixed-species flocks led by Thamnomanes schistogynus .