Nope, there's nothin' like that flying around back home. Too bad, they sound like a blast to me!

[There are certainly some large, bird like monsters, but those aren't exactly rideable. Oh, maybe there's something about birds in this book.]

Ooh, here ya go! The largest bird ever is the elephant bird, and that's like eleven feet tall.

[Eh, that's pretty big... What was she looking for again?]