(noun) A soft, fleshy patch at the base of the upper mandible of the bill of some bird species, particularly birds of prey and parrots. Texture, size and color of the cere can vary depending on the species as well as the bird’s age and gender. Waxy and swollen characteristics are common.
The purpose of the cere is unknown, but it houses the bird’s nostrils and it is believed to play a role either in respiration or the sense of smell.
Photo – Raptor’s Cere © Vladimer Shioshvili