Hi friends- So here's what I'm dealing with- 2 weeks ago I followed a trail of feathers from the pen to the side yard where I found one hen, killed with it's head gone. (I forgot to close the little door, my bad- have since made a more concerted effort to tighten up security and shut them in tight at night.) The rest of my girls seemed stressed/anxious since then and have all started molting feathers, and I chalked it up to trauma over the kidnapping and murder of the friend, and that I had to go out of town for a few days too...... Fastforward to last night, when I went down to the coop to shut them in, and there a possum sitting in a nestbox happily breaking eggs and my birds are all huddled up away from him, freaking out. He had climbed over the pen fence and had gotten into the coop before I had come down to close them in. My mother-in-law helped me kill him, so I don't have to worry about the immediate danger of his repeat offense, but my flock is so very unhappy and with the molting, they look horrible. And that's where I pose my question to you: can repeated stress like this cause a chicken to molt, or perhaps its possible that the possum was grabbing at them and pulling out their feathers? Secondly, any recommendations for things I can do to reestablish harmony, calmness, and peace? I have never had to deal with a predator upsetting my flock before and want the girls to feel safe and happy again. Thanks for reading and in advance for your advice!