I didn't read it, but when I Googled it one of the hits was an accident report. Something about the wing spar folding, IIRC.The Birdman was one of the lightest, but it was actually too light to be safe. An excellent candidate for a re-design using stronger materials IMHO, but not a good candidate for building and flying as-is.
A powered paraglider is an Ultralight Aircraft. It is not an Ultralight Airplane. Don't want to get into the Aircraft vs. Vehicle discussion but is that where your comment comes from?Not an ultralight aircraft. A powered paraglider.