With a 24-foot wingspan, how did the prehistoric Pelagornis sandersi, the largest known flying bird of all time, manage to fly so well? It relied on two key factors: a light frame and an ability to soar with the ocean currents. From: WORLD'S BIGGEST BEASTS http://bit.ly/22COCJt
Visibility: 563285
Duration: 3m 56s
Rating: 6551