Dendroplex picus, Straight-billed Woodcreeper. Widespread and fairly common in northern South America. This medium-sized woodcreeper is found in open wooded habitats, scrub, and riparian forest. Very similar to Zimmer’s Woodcreeper, but listen for Straight-billed’s slightly slower song that typically goes up in pitch at the end. Usually seen singly or in pairs working up tree trunks and branches, usually at lower to middle levels in forest. Sometimes follows mixed-species flocks.