Avian Anatomy

2. A tuft of feathers on the head of some birds.
4. The parallel filaments that branch off from the central shaft of a feather.
7. The central shaft of a feather.
9. One of the two parts of a bird's beak (upper or lower jaw).
12. claws on the feet of birds of prey.
13. A specialized stomach that grinds food, often with the aid of ingested stones.
14. The part of a bird's leg between the knee and the toes.
15. The fleshy area at the base of the upper beak, often containing the nostrils.

1. Structures that cover a bird's body, providing insulation and enabling flight.
3. The collective term for a bird's feathers.
5. The area of a bird's back just above the tail.
6. Limbs modified for flight.
8. Feathers at the rear of a bird's body used for steering during flight.
10. The back of a bird's neck.
11. Hard, pointed mouthpart used for eating and grooming.