I'd like to know myself.
My grandpa up by Highpoint New Jersey keeps pigeons.
The goshawk hasn't been around much at all since I got him the wrist rocket so it's a tad bit safer to get new birds. He's actually physically fought it off one of his birds before.
It's mostly a mixed flock of kings, homers, a tiplet (hope I spelled those right) and some others I don't know the names of, but knowing him he'd go nuts if I could find him someone who's kept them to talk to.