R. A. Philippi [Krumwiede] and Landbeck, 1861,
near Arica, Chile.
Previously considered conspecific with C. fuscus and C. albidiventris, but recently split on largely genetic evidence#R#R. Differs from latter in characters given under that species; and from former in its cream vs buff wingstripe (2); rusty-grey vs grey upperparts (1); whitish vs grey-buff underparts (2); resident vs migratory habit (1); and song with greater number of introductory and final notes (2) and highest frequency and/or overall frequency range (2)#R. Sometimes also considered to include C. olrogi as a race, that taxon being very similar to races riojanus and yzurietae. Within area listed for nominate albiventris, plumage varies clinally from darker in N to paler in S; also, birds from drier areas are whiter than those from humid slope of Andes, and are potentially the “true” representatives of that race, leaving presumably the name longipennis (proposed for N populations) available for humid-slope birds; proposed race rivularis supposedly differs from latter in less rufescent back, paler flanks and less heavily margined breast feathers, which matches some specimens from Junín region (Peru), but its type locality (Maraynioc) is at or near humid E slope; whether these two described forms are valid entities requires further study. Five subspecies recognized.
Food and feeding
Status and conservation
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