Thanks. Still a puzzle.About 3:30 am, the dogs started barking outside. I went out to check on things and they were ok. I locked the dogs in the house so the neighbors would not call the cops for barking dog. At 0700, I took the dogs out to go the bathroom. There was Chloe- not in the chicken yard. I have a 6 ft privacy fence around the yard and a 4 ft wire fence around the chicken yard. A couple of weeks ago, I trimmed their wing so they could not fly over the fence. It was 32 degrees last night. Whatever got her dropped her outside the wire fence, but did not get to eat her. It had to be about daylight because with that cold, she would not have lasted long being in shock. An early hawk? A late owl? A cat? I don't know.I think a cat would have gone for the innards instead of the head- sort of think it was an owl- but why did it drop her? Maybe we scared it off with the commotion of getting the dogs outside. Anyway, I locked the coop and will let them out in the morning when it is safe.