I've lost 3 birds this week, a 9 week old pullet, a hen and a rooster. My chickens and coop are enclosed in a fairly large chain link pen, maybe 20 x 40. I noticed last week that I couldn't find one of my pullets at bedtime, but figured she was just huddled under someone else. In the am she was still missing and there was a pile of feathers in the run that were definitely hers. The same day she went missing I noticed that all my birds were inside the coop/or under it in the middle of the day, but it was rainy and I was short on time so I thought nothing of it at the time. The same day the pullet disappeared one of my roos was sleeping outside at bedtime,which is unusual, so I put him to bed on the roost, .the next morning he was dead. At that point I wasn't sure if he'd been sick & I didnt' notice, or if one of the other roo's hurt him, there were no marks on him that I could tell. . Today I had a 8 month old Golden Comet pullet that was completely normal at 8 am dead at 4. She was lying in the middle of the pen with a bunch of loose feathers around her, but no apparent trauma. My experience with sick birds is that you can usually tell that something's up before they die, and they usually find a dark, quiet place to hide when they're ill, they don't just drop dead in the middle of the pen. I'm thinking that maybe I'm dealing with hawk strikes and the other roos are scaring the hawk off before he can eat. What do you all think?