Moustached Woodcreeper Xiphocolaptes falcirostris

Large, heavy-billed woodcreeper. Has rather unmarked plumage, but note the buffy eyebrow, moustachial stripe, and throat. No other woodcreeper within its range has such a large, strong bill. Inhabits deciduous dry forests and wooded caatinga. Song is a whining series of unmelodic notes, such as “nk-wiirh, week! weeer, weeer, weeur, weuur.”