how bird wings work

[Rana]

this is probably the coolest video ive seen in a while
If you haven't seen it yet - enjoy!

[ame=http://www.youtube.com/watch?v=4jKokxPRtck&feature=g-all-lik]How Bird Wings Work (Compared to Airplane Wings) - Smarter Every Day 62 - YouTube[/ame]

 

[Boysmom]

Thats a great lesson and demonstration, Thanks for sharing