May I suggest Australian Wedgetails, their toes are like kitchen knives. Having had several experiences of their attentions coming at my hang glider out of the sun with those massive talons outstretched I have no worries that they are not up to the job. They are not all of the right stuff though, on one flight about 4,000ft up over a place called Beaudesert several years ago, one flew over and landed on my wing tip and perched there for a ride for a minute or so. Must have thought it was a cool kind of surf board in the air. No sign of any scratches on inspecting the sail after landing.