In the wild, Budgerigars are small green and yellow parrots, with black barring above, and a small patch of blue on the cheek. The male has a dark blue cere (skin at the base of the upper mandible surrounding the nostrils). In the female this is brownish when breeding and light blue otherwise. Young Budgerigars are similar to the adult birds, but are duller and have a dark brown eye (which is white or yellow in adults).