Good morning BF.netters. If anyone here keeps chickens you know the challenges of keeping them safe from predators. I got 5 four-month old pullets from a friend in early August. I bought them a larger coop from Tractor Supply and built a 24x10 foot run all around it with 6 foot walls. The walls are covered top to bottom with hardware cloth and chicken wire. I have welded wire flaring out from the base of the run (which is made of 4x4 treated lumber) about 2-3 feet as a predator apron. Up until yesterday I did NOT have a roof of any sort. I had come into the weekend with plans to finish the roof on Sunday (which I did), I had the joists all cut and in my garage, I was just waiting for good weather and an additional person to help me hang them. Unfortunately Saturday brought the beginning of hockey season for my family, an away game about an hour away. We had to leave at 3 to get there, I anticipated being home before 9. I did not want them without food and water from 3pm until morning which they are let out between 7-8am. I had been putting the chickens (and ducks, I have 2 pekins as well) to bed, obviously earlier and earlier as the season changes, and it has gotten to be about 6:00 or 6:30 pm, but when I put them to bed the ducks are in their house and the chickens roosting in their coop, so all I do is close the doors and latch them. I stupidly believed they would all do that and sit semi-protected in their houses until I got home to close them up. The weather driving home Saturday night from Milwaukee was miserable, driving rain non-stop and awful visability. We didnt get home until 9:30. When I went out the put them to bed I was devastated to find one my my chickens, a cinnamon queen who had been my best layer and the obvious alpha of the flock dead in the middle of the run. She was the sweetest and friendliest chicken and would greet me at the door and hound me until I picked her up. I did not examine her body for trauma, as I was too upset, but the bottom line is that her body looked more or less well intact, however she was missing her head, the head was gone, not in the coop or run. All of the other chickens and both ducks were in the chicken run. The chickens in their coop (which was still open and unlocked) and the ducks just standing in the run (the door to their house had been left closed inadvertantly) and nobody else had so much as a scratch on them. My research has lead me to identify many possibilities. First, the ground predators. 3 I can think of off the top of my head. 1) Racoon 2) possum 3) weasel. I know we have the first two in our neighborhood, which is on the outskirts of town (oshkosh) and in a heavily wooded subdivision. I have never seen a weasel out here but I am sure they are out there. I do not believe any of these predators killed my chicken, as it sounds like all 3 would have done much more damage to the rest of the flock. I do know that whatever came in, came over the top and into the run as their is no digging of any sort (predator screen prevents that and I checked yesterday) and none of the chicken wire or hardware cloth was compromised. Air predators - we have tons of hawks, bald eagles, and large owls in all of these enormous trees. Obviously I do not know the time that she was killed, but as I said, her body was not picked apart at all, there were a small amount of feathers near her body and her head was gone and missing from the coop. My research and hypothosis was that this was an owl attack as I think a hawk would have picked her apart more. I put my roof on yesterday, as planned, but one day too late obviously, and I know whatever killed my chicken will be back for more and I want to figure out what it was so I can make sure the run is sufficiently protected going forward. Thanks for reading.