Semicollared Puffbird Malacoptila semicincta

Chunky, large-headed bird of rainforest understory. Brown with extensive white streaking, and a band of reddish brown across the back of the neck. Usually sits motionless in the understory, sometimes moving with mixed species flocks with birds like ant-tanagers and antwrens, or at army ant swarms. Rarely gives its song, a high-pitched trill, but more frequently gives a weak whistled “weew” that sounds like a soft Tawny-crowned Greenlet and often is overlooked.