What Kind of Bird is Big Bird?

Zoologist Mike Dickison of Duke University special...  ...t Mike Dickison of Duke University specializes in flightless bird . Naturally, he applied his expertise in describin...  ...y, he applied his expertise in describing a giant flightless bird we are all familiar with, namely Big Bi...

http://www.neatorama.com/2010/07/15/what-kind-of-bird-is-big-bird/