Courtesy Stephanie Wilson, Illinois
The rhinotheca is the horn-like covering of a pet bird's upper beak. Lovebird Crystal shows off her rhinotheca as destroys a yummy Bird Talk bind-in card.
Rhinotheca: (noun) The covering of the upper beak of a parrot, which is a keratin surface. Keratin is the tough and fibrous protein substance that forms the outer layer of epidermal structures, such as horns and nails.
Bird Word of the Day