Yesterday right in front of my eyes, a hawk, Red tail i think, swooped down at my birds. I think the attack was aborted because the hawk realized that one of the black and white birds was my border collie. S/he flew up around and disappeared. The chickens dove under a bush & the silly ducks & geese sort of clumped together out in the open. I was surprised to see this right in front of me. My birds free range all day and are put up at night and so far i have been lucky to not lose any to the many BOP that live around me. Short of penning my birds 24/7 is there anything else I should be doing to minimize chances of losing birds to hawks, owls or eagles? Also are vultures a threat?