crested spinetail Cranioleuca subcristata

Distinctive small, bicolored bird, with a mostly pale olive-brown body, short crest, rufous wings, and long spiky rufous tail. Crown has narrow black stripes; bill pinkish and decurved. Very arboreal, actively foraging by hitching up branches and tree trunks, as well as by checking leaves and bromeliads. Often with mixed-species flocks. Common, mainly in foothills and lower montane regions. Usually in humid forest, tall secondary forest, and forest borders. Very vocal, the song an accelerating series of short, high notes.