Flapping baby birds give clues to origin of flight Aug 29, 2014 13:23:43 GMT Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Pincho Paxton on Aug 29, 2014 13:23:43 GMT Link...Flapping baby birds give clues to origin of flightPincho says...People falling put their arms out, so I go with falling.