35.5 - 38.0 cm. 535 -766 g. Body bright green. Yellow eyes with a complete white eye ring. Yellow nape and fore crown. Strong bill grey and curved. Margins of flight feathers blackish to blue-violet. Central part of flight feathers red. Tail green with margins yellow-green. Feathers covering legs yellow. Legs gray. Both sexes alike. Juveniles resemble adults but nape and fore crown are less bright and lack red feathers in wings.