In article ,
says...

A man-carry engine-powered ornithopter has already been done.




I suppose you refer to 'The (Canadian) Flapper'. But this ornithopter
needed jet assistance / a pusher propellor and a second wing to get
airborn.

There is quite a possibility that the Flapper would also take off
without its wings flapping. In that scenario the flapping can hardly be
described as sustained flight.

Tom De Moor