Nature - Big Birds Can't Fly.

The ostrich, the emu, and the rhea-together with the kiwi and the cassowary-are the court jesters of the avian world, because they can't do the one thing that birds are famous for doing. They can't fly. But exactly how, and why did these birds abandon flight? It's been one of the natu...

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Bibliographic Details

Corporate Authors:	PBS (Firm),$4dst, Kanopy (Firm),$4dst
Format:	Video
Language:	English
Language Notes:	In English
Published:	[San Francisco, California, USA] : PBS, 2015. Kanopy Streaming, 2016.
Subjects:	Environmental sciences. Veterinary medicine. TV Series Internet videos. Television programs.
Online Access:	Connect to this streaming video