Note that it's not human powered. More on this blog: http://www.humanbirdwings.net

Also note that he is not in fact flying, see discussion http://news.ycombinator.com/item?id=3732385

Ah, I totally missed that discussion. Thanks.

IMHO he is flying. With a kite like that and a little running speed you could generate enough lift. But I'm not sure if the flapping helps.