Chilean Seaside Cinclodes

The Chilean seaside cinclodes is 21 to 27 cm (8.3 to 11 in) long and weighs 63 to 67 g (2.2 to 2.4 oz). It is a large cinclodes with a straight bill. The sexes have the same plumages. Adults have narrow pale buff or whitish supercilium on an otherwise blackish brown face. Their crown and upperparts are smoky black or blackish brown. Their wings are blackish with a pale rufous band at the base of the flight feathers. Their tail is black; the outer three pairs of feathers have pale rufous or ashy-brown tips. Voice: The song of the Chilean seaside cinclodes is a "bright trilled series of piping whistles" that pairs sometimes sing in duet. Its calls include a "short, sharp, slightly metallic chik" that may be uttered in a series and a "repeated more subdued drier chuk" made by an adult feeding young.