Spix's Woodcreeper

Spix's woodcreeper is a medium-sized member of its genus, with a longish, slim, slightly decurved bill. The species is 18.5 to 21 cm (7.3 to 8.3 in) long and weighs 27 to 36 g (0.95 to 1.27 oz). The sexes have the same plumage. Adults have a dusky brown face with narrow buff streaks and a pale supercilium and eyering. Their crown and nape are blackish brown with small buff teardrop spots that are streakier and blackish-edged on the nape. Their back and wing coverts are olive-brown, with buff teardrop spots with blackish edges on the back. Their wing coverts have buffy stripes or spots. Voice: The song of Spix's woodcreeper is a "very high, very fast trill, descending at beginning, level at end, last note higher". It has been put into words as "twe-tee-ti-ti-ti-…-ti-ti-it, wheu". Its calls are described as similar to those of the elegant woodcreeper, "sharp 'chip' notes followed by a whine", also described as "3-noted 'tjictjicwuuuw' ".