33 - 35.5 cm. Bill strong, robust, black. Feathers strong and rigid, similar to bristles that cover the nasal orifices. Overall deep blue to purplish blue. Sides of head and throat darker. Wings rounded. Tail rounded. Legs strong, robust, black. Males and females are similar. Juveniles have the bill yellow, quickly becomes black; head and body sooty gray; wings and tail duller than adult.