how do birds fly?
do u know where to find diagrams of how birds fly?
http://www.fi.edu/wright/again/wings.avkids.com/wings.avkids.com/Book/Animals/intermediate/birds-01.html
do u know where to find diagrams of how birds fly?
http://www.fi.edu/wright/again/wings.avkids.com/wings.avkids.com/Book/Animals/intermediate/birds-01.html