flickr-free-ic3d pan white

Bird bone structure

"During walking and running in birds, hindlimb movement is generated primarily at the knee and ankle joints; in humans, movement occurs at the knee, ankle and hip joints. The bird’s thigh does not move substantially from its nearly horizontal position where it provides rigid lateral support to the thin walled air-sacs of the respiratory system."

  

4,019 views
0 faves
0 comments
Taken on June 8, 2009