I was missing a chicken today. Found piles of feathers and then my poor oliver about 200' away. DH went and got her body for me so we could bury her. Pretty sure it was a hawk. Oliver was a polish chicken, so not so great about seeing stuff from above. I'm concerned about the remaining 3 chickens ( who do see stuff from above) and the 5 ducks. They are free ranging. We knew one day something would get somebody. Do I need ot keep the birds cooped up tomorrow or a few days - short of a pen with some type of top, what is my best defense?