The long-billed corella is a medium-sized white cockatoo with a short crest (not always visible) and short tail, stocky body and a distinctive long upper mandible to its bill. There is a faint yellowish wash on the undersides of its wings and tail, and orange-red splashes on its forehead, throat and an orange-red crescent across its upper breast. The eye ring is pale grey-blue. It is a conspicuous and gregarious species, often seen foraging in large flocks on the ground.