I have started losing chickens to some type of predator. I live in a rural area of Western NY. First hit was just after sunrise something got in and killed two hens one was decapitated. When this attack occured I did not have the pop doors closed as I have not had issues with any predators getting into the run. After losing the two I started closing the Poop doors well I get home from work tonight and find something has killed another hen by decapitaion. The only access in to the coop is about a 2 1/2" maybe 3" gap in the eaves. I searched the henhouse thouroughly to be sure the critter was not still in the coop and it was not. I suspect weasel but I was not aware they could climb my other thought is Pine Marten but they are not commen and they are pushing the size limit to get in. Whatever it is has to have the ability to climb 6 foot walls to get in and then to get back out. I am sure it has to be something small as the coop is very tite and the carcasses are not chewed on except for being decapitated. Any ideas on what you think it is or how to deal with it is greatly appreciated Tomorrow I will be putting hardware cloth over the openings in the eaves but since it has attacked after sunrise I am concerned for them when they are in their run.