Size: L: 25 cm. Wt: Males: 90 g. Females 75 g. Males and females are somewhat dimorphic in size, but are similar in colour. This species is not seasonally dimorphic.
Adult: upperparts dark brown, with light brown feather-edges, and chestnut patch on wing; head gray, with dark crown and nape, and white chin and throat; neck, breast, and belly light chestnut; flanks unevenly barred black and whitish; bill reddish; legs reddish-brown
Juvenile: upperparts blackish, with little light brown on feather edges; chestnut patch on wing; head dark gray, with dark crown and nape, and white chin and throat; neck, breast, and belly whitish, mottled with smudges of blackish; flanks very darkly barred with black; bill yellowish; legs olive brown
Nestling: precocial and downy; down thick, short, black; bill gray, with dark ring; legs gray