Bird+Wings


 * [[image:P1290597-1.JPG]] || = The Wing =
 * ====The wings are the **airfoils** for flight.====
 * ====Click **here** to brush upon your airfoil science.====
 * ====Use the pictures below to navigate your wing.==== ||

Phalanx = finger

 * [[image:birdwing6.jpg width="452" height="175"]]

www.theanimalfiles.com || == __ Wing Bone Design: __ ==

**The hand bones** and their feathers give forward **thrust.**
|| www.lab.fws.gov
 * [[image:birdwing3.jpg width="425" height="285" align="center"]]

to be **thrusting** forwards to get **lift** (hmm...why?)
. || == __ **The Flap and the Twist** __ ==

**Hint:** look at where the shaft is. Could a tail feather twist?
.

venetian blind.

 * ====They **twist open** on the **up flap**.====
 * ====They **twist closed** on the **down flap**.====

**Hint:** air resistance
||
 * [[image:birdwing4.jpg width="432" height="363"]]

www.birding.com/idwing.asp || www.birding.com/idwing.asp ||