Guianan Tyrannulet Zimmerius acer

Tiny, inconspicuous flycatcher; in addition to small size, note stubby bill, wing bars, and longish tail. Found in a variety of forest habitats including primary and secondary rainforest, low-stature forests with sandy soils, and along river edges. Often sits on leaf clusters at the ends of branches, sallying for insects; also feeds on fruit. Heard far more than seen. Most common call is a dry, two-noted hiccup that is easily overlooked; dawn song is a repeated, rising twitter.