Caccabis=, a collateral form of , a Partridge, in classical Greek.
Nude eye-patch. Plumage uniformly coloured, not mottled, with flanks transversely banded grey-buff, black, and chestnut. Tail of fourteen feathers from five-eighths to two-thirds length of wing. First primary equal to fifth or sixth (third longest). Primaries brown, unbarred, with part of outer web near tip buff. Sexes alike, but males generally larger. Males with a pair or more of blunt spurs on each tarsus. Chiefly Palaearctic, one species ranging into N. India.