I've seen so many sad posts here and every time I think ... there but for the grace of God goes I. Well I guess my luck ran out. We've lost 3 ( 7 week-olds) in 3 days. We only had 6 so half are gone. I found the first two torn apart in the morning when I went out to check them. Just the legs and some clumps of feathers. One carcass was still inside the pen and the other was dragged out through the chain link fencing. I only found one leg out there and some entrails. We had been keeping them in the chain link pen in an open front dog house for almost a week. This is the exact same set-up we used last year for the last batch of pullets. Well obviously there's something new in the neighborhood this year. So we decided to put hardware cloth (welded wire) on their brooder cage and put the four survivors into that at night inside their pen. Everything was fine the next morning so I let them out into the pen for the day and was going to put them back in the brooder cage for night. I went to put them in about 6:30-7:00 and one more was missing. There was fresh blood on the ground so I had just missed it. This time the critter had climbed the 6 foot fence and exited out through a fresh hole in the netting on top of the pen. So the 3 survivors are now back in the brooder box full time and for now there's plenty of room but that won't last much longer. We have had the live trap set up in the pen baited with wet cat food for two nights and a day with no luck. It wants fresh meat and blood. There is no money to by miles of hardware cloth to fence this critter out top to bottom on their pen so I am at a loss what to do when they out grow their brooder. So far nothing has happened to my adult birds. Twelve of them all free range all day and locked up at night.