thats for sure a Juv Coopers hawk and by the size a female. I know its tough to face it, but I bet if you ruffed her up a little and sent her on her way she would stay away from chickens the rest of her life. In fact if she was lucky enough to make it to adult hood she would teach her children to stay away from chickens. Accipiters (coopers, gosh, sharpshins) learn where to hunt and who to hunt from their parents. Imagin that! Teach a hawk to fish in the right place and generations fish for them selves in the right place the rest of thier lives. Peace to all!