happened to us at dunbar on thursday peregrine just came from nowhere 4 split from the batch and it singled out a dark cheq,these things don't need to drop from height it was about a car length from the doo chasing it and it just dropped a gear and was just about to nail the doo but the doo done a half jink and the peregrine was knocked out of it's stride and the doo went to ground,you can only stand and watch and will the wee doo to fly it's heart out to escape these things,anyway we got all the birds home from the toss which was a plus point but a dark cheq hen was late in coming but survived thats the main thing