Some predator very quietly took one of my chickens midday. I was home and outside most of the day, there was no squawking from the chicken that was taken nor from my other hen. I noticed her missing when the other hen called her and she didn't come. I found a trail of feathers beginning in the woods that ended suddenly, but no other remains. There is no indication where she was taken from in the yard and the hens never enter the woods. Any ideas who the predator may be? My remaining chicken is staying in the pen (chain link with a roof). Do you think she is safe? thanks so much for your help.