I let mine off a chuck at foress bout 25birds soon as I let them out the basket and they hit the sky I saw two perigune straight through them ,then worked to pull the birds further inland, lost 8 that day. foress 31 mile from Inverness with breeding etc I reckon there will be a couple more in that area atleast, even driving that short distance the amount of hawks I seen circling the fields too was crazy, this is area most you guys dont need to worry about, my point is there everywhere and problem only getting worse. only way we could maybe identify bad areas is with GPS. I have sky leader but you need to get birds home to read the ring, live tracking would open our eyes to the sky. just need some one to make the idea work