Bird Skeleton

well developed keel on the sternum

Fusion of bones in the ankle

well developed clavicle for the attachment of flight muscles

Lower Jaw

Fusion of bones at the hip to absorb landing stress

Wing bone that tertiary flight feathers attach to

Broadened tailbone for the attachment of tail feathers

Larger of the two bones in the middle segment of a wing

Smaller of the two bones in the middle segment of a wing

Outermost bone of the wing

Strenghtens the ribs of birds

Upper leg bone