So, a couple of days ago, I noticed my Black star was not walking around the yard anymore. On further investigation, (Or as best as I can do with a broken foot) she was just gone, then, looking around, I noticed he flock seemed much smaller. There were 17 of 34 in the pen, and about 10 out (but they are by woods and fields so that is not excact). Point is, we are missing a 1/2 dozen chickens. Whatever it is just takes them. No sound, no feathers no carcass. But It only gets the chickens that live outside. We have constant trouble with holes under the run, through which the chickens escape. So some are roosting in trees, and one knocked the top off of an Alberta spruce to sleep there. I think it is either canine, or we have heard bobcats in our area. What do you think? What should I do? Right now, the chickens are closed int eh coop, and we are fixing the holes in the run, while catching the birds that escaped.