Here's an excerpt from Twain's Following the Equator that amused me:
"The Moa stood thirteen feet high, and could step over an ordinary man's head or kick his hat off; and his head, too, for that matter. He said it was wingless, but a swift runner. The natives used to ride it. It could make forty miles an hour, and keep it up for four hundred miles and come out reasonably fresh. It was still in existence when the railway was introduced into New Zealand; still in existence, and carrying the mails. The railroad began with the same schedule it has now: two expresses a week-time, twenty miles an hour. The company exterminated the moa to get the mails."