Nope, it's a hoax.

Now forget it ever existed.

There is no "Jarno Smeets," and he didn't build a human-powered ornithopter.

See Wired video here: http://www.wired.com/wiredscience/2012/03/birdman-admits-hoax/

He's a Dutch artist named Floris Kaayk who evidently specializes in creative hoaxing.

Oh fudge, I wanted one of those.