Thanks everyone. Raccoon seems to be the consensus, and it makes sense. After more questioning, I realized how little information he picked up from me or even looked up. I had given him all of my silkies (8-9), a pair of black tailed buff japanese and a couple of huge Olive egger cockrels. They were all wiped out in one night. He said he had some roosts, but they wouldn't all use them. I had to tell him that silkies need other protection as they Can't Fly! He said they liked to huddle up on the ground. Ugh. Now he wants to raise some from TSC.

They don't like to huddle on the ground! You have to give them a safe place off the ground with a way to get there! He wont get another bird from me! Ever!
He said that he never saw a single egg from any of them either. I said that he was probably feeding some snakes or rats. All of those birds would have turned a year old this month. We didn't get eggs until late summer/fall from the same age birds that I kept. I asked what he was feeding them. "Cracked corn and some layer mash" Ugh.