Schwarzrücken-Baumsteiger Xiphorhynchus lachrymosus

Fairly large and distinctive woodcreeper. Much more boldly marked than any other woodcreeper in range: obvious thick white streaking above and below. Found singly or in pairs, usually in forest, where you might see it hitching up the lower part of a tree trunk. Often follows mixed-species flocks. Listen for voice, a clear descending series of notes, usually stuttered at the beginning.