P.K.Selander, 1952 August 22 Piedad de la Cuerta, Campylorhynchus humilis but fort. Worms move very rapidly. Flights of any duration are usually from bushes (or ground) to tops of palm trees (30 - 40 feet). Birds normally descend to ground in thick herbaceous cover. In the mangroves and other broad-leaved tree-bushes, they hop or walk along the branches and horizontal trunks, exposing leaves with the bill. Rather interior feeders, preferring the inner portions of the bushes, not the ends of twigs and branches. I suspect that insects are taken by them. Occur in pairs and small flocks with about equal regularity. Some singing heard - first notes were given and then the song followed - cha-cha-cha - cha-da-dit (song) - ticalo-ticalo-(or tuk-a-lo) ticalo-ticalo (given very rapidly). During delivery the bill is pointed upwards at an angle and the tail is formed downward or outward (not upward). Call notes are given apparently by both adults and juveniles - Most common is a rather soft but nasal cha-da-dit-cha-da-dit (fast and short). This is not an alarm note - more a foraging note. Alarm note is "che" (short). Around 10:00 P.M. the frequency of call notes falls off somewhat and birds become mostly silent, although soft foraging notes may be given at any time. Found a nest located in a broad-leaved tree