After being away for a few days, I let my chickens out in the yard to play for a while. Then, exhausted from the trip, I took a nap. I didn't realize my husband did the same, leaving our 7-month old Lab unsupervised in the same yard with the girls. I just went outside to find the dog with one of the birds in his mouth. I yelled, he released, and she seems okay. But another is missing. There are lots of feathers in the yard, I can't find a carcass and no blood. Is it possible she's still alive?