We thought so too and we went to a lot of trouble to make a wingbeating model and even named the company after it. The wingbeat certainly does help attract a young or uncertain raptor. But once they have taken it in the air a time or two, they don't seem to care. The whirring engine noise seems to attract them strongly. Bear in mind that when a pheasant fixes its wings, its airspeed is faster than when it is climbing. The raptors seem to cope with this no problem. But we have a lot to learn on all this and only trials with real raptors can tell us all the answers.