I noticed about a week ago in the wee hours of the morning that at least two hens were out in the run attached to the chicken tractor run. We have had some warm weather lately and a full moon. The coop part of the tractor is big enough for five hens, I think. I also have one hen that is at the bottom of the pecking order. They are Buff Orpingtons and all look pretty much alike at night from my kitchen window so I don't know which ones are out. Any ideas about this? Also, I discovered a possum on the back porch last night eating cat food so I closed the door to the run attached to the tractor run so the hens have to stay in the small run. How can I get rid of the possum without poisoning him? He/she growled at me when I tried to chase it off with a broom. Thanks for any help! I really would like some advice on the nightowl chickens.