Hawks have taken a few of my chickens, I felt sorry for my chickens to have to stay in their coop all of the day all of the time so I would let them out to rome. That didn't exactly go so well. Foxes also have taken a few, my chickens now have a vary large run that they can go into and are safe from the hawks and foxes. What kind of birds are after your chickens, Great Horned owls are threats to some hawks so maybe you could set up a decoy Owl or something. Good Luck
I have 2 decoy owls in my yard. Only thing they seem to be accomplishing is looking like lawn ornaments. I actually had a turkey vulture flying low over my girls in the back yard one day this summer. Good thing my girls tend to listen pretty good. Managed to get them gathered up near me and under the little deck. Well except for super stubborn Macie who just simply likes to defy me. She stood in the middle of the yard with an attitude. I don't trust anything. My girls are in their fenced in run with that heavy small 1/4 inch gauge fencing and its roofed. If they're outside to roam, its when I have my German Shep outside with them and if I'm not out with, I'm in the kitchen keeping an eye on them. Probably a bit overboard on my part but I'm so devastated any time something happens to one of my babies. I was so heart broke over losing the 2 chickens of mine (one this early Sept. and the other May of 2011) that my hubby made me get another within a few weeks both times. My girls are for pets so I get really attached. They just bring so much joy to my life.
Mine are pets too, my heart was in my neck when I saw that damn eagle come within inches of my Roo, I don't even know what I would have done if it got him. He is pretty docile and not much of a defender of his girls.
Its the most awful feeling isn't it. Neighbor's garage cat was here yesterday. Course I had just let my new chicken (banty) run around the yard for the first time too. Bless Lily's heart, (my german shep) she let me know that cat was here. I ran around frantic taking inventory of the girls and hollering for Butterscotch (My new banty I had given to me this past Tuesday from my cousin & her two daughters 8 & 10.). Around the corner of the coop out pops Butterscotch looking at me like "what?" I was SOOO happy to see her! Good thing she knows her name! This is the survivor of 2 fox attacks so I guess I should know she'd outsmart a cat. Still, scared me good! These darned chickens waste no time weaseling their way into the heart do they.