I have not posted in quite awhile, but I am stumped....I have a automatic coop door closer that has worked well for a year or more. It failed to close the other night and I failed to check things out after dark. Something took advantage of the opportunity pulled one chicken from roost dragged it out of coop, (you can see feather trail), took it about 20 feet stopped and must have killed chicken. Pool of blood on ground. Then I can track the feather trail into woods. A feather about every 10 feet or so. Took chicken 50 yards from coop to base of large oak tree. Last couple of feathers are right at base of tree. No carcass. But first branch is up about 40 feet. This is a 80-100 foot tall oak. Any ideas?