Size: L: 35 cm. Wt: Males: 250-260 g. Females: 210-220 g. Males and females are similar in plumage, but are somewhat dimorphic in size. This species is not seasonally dimorphic.
Adult: head, neck, and underparts bright purplish-blue; upperparts brownish-green; bill red with yellow tip and light blue forehead shield; legs yellow
Juvenile: head, neck, and underparts light buffy-brown, with dark forehead; upperparts olive-brown; bill and legs olive