Patagonian Forest Earthcreeper

The Patagonian forest earthcreeper is 20 to 22 cm (7.9 to 8.7 in) long. It is a large earthcreeper with a medium-length and moderately decurved bill. The sexes' plumages are alike. Adults have a whitish supercilium on an otherwise grayish white and dark grayish brown face. Their crown is a dull dark grayish brown with some fainter mottling. Their nape, back, rump, and uppertail coverts are dark brownish gray with an olive tinge. Their tail's central feathers are dusky brown and the rest blackish brown. Their wings are grayish brown with dull rufous bases to the flight feathers. Voice: The Patagonian forest earthcreeper sometimes sings from a high perch. Its song is "1–2 sharp, short and lower-pitched initial notes followed by either a syncopated or a continuously delivered series of triplets...rendered 'p-p-tirik-tirik-tirik-tirik-tirik-tiruk' ". Its contact call is "a hollow 'pep' " that is given singly or in a series.