Wing assisted incline running and evolution of flight
Uploader: psycholer
Original upload date: Mon, 22 May 2006 00:00:00 GMT
Archive date: Sat, 04 Dec 2021 23:18:55 GMT
video showing a duck hatchling climbing a haybail at an 45 degree angle. The hatchling is climbing the hail bail using its feet and flapping its wings.
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