Chilean Tinamou is the only widespread tinamou in Chile, and is endemic to that country. It is a common bird in the central zone of Chile reaching south to the Lake District. Birds from the wetter southern part of the range are darker than those from the drier north, but the variation is clinal. Chilean Tinamou is known locally as perdiz, which is the Spanish term for "partridge". Locals say that the bird was at one time abundant; if so, then its long term decline may be partially due to the gradual increase of the introduced California Quail (Callipepla californica). Chilean Tinamou is found in grassland, open acacia scrub, and matorral habitat with grassy openings, but it also occupies orchards, agricultural areas, fallow land and even wheat and canola fields. Males proclaim their territory with a loud double whistle, and make strident alarm whistles when flushed from a hiding place.