User blog comment:Evans0305/BioShock Infinite gameplay videos/@comment-189.189.207.10-20110614001918/@comment-2250991-20110614225645

Possibly, but like I said, that journalist just used that in place of a image, so who knows if Songbird sounds anything like that.

I think the Big Daddy comparison has to do with the design of the armor and machinery on it, since it would be as if Columbia created their own Big Daddy, but to fly instead of deep sea diving. Also, they both have eyes that change color when they react, from standard yellow to angry red. As far as what they originally were, the Big Daddies are obviously human, but no one knows what Songbird originally was before he became that creature. My guess: someone drank too much Murder of Crows Tonic, and they turned that way. JK :).