The White-winged Diuca-finch (Diuca speculifera) is a species of bird in the Emberizidae family. It is found in Argentina, Bolivia, Chile, and Peru. Its natural habitat is subtropical or tropical high-altitude grassland. Recently, though, evidence has been found that the bird may also nest and live in glacial regions; they may also be the only species of bird other than penguins to incubate their eggs on glacial ice.