I heard my chickens squawking about 10:30 the other night after going to bed. I had left the coop door open that night due to freezing rain and sleet at sundown. Got up with a pistol and flashlight--- damn possum after my hens. The hens sleep on a roost about 6'' above the laying boxes, and he was trying to reach through the slats from below and snag his junky ass a fat hen. Went back to the house for a S&W AR-22 with sub-sonics, 2 shots and he won't bother my hens anymore. I was REALLY hoping it wasn't a skunk, a chicken ain't got a chance--- everything going grabs them. I had took my 100# male lab with me, not much gonna come out of those woods that he can't handle. I had tried to knock his ass off the layer boxes for the dog to dispatch, couldn't get him out and he was stirred up and hissing and snapping at the stick I was using.
On a side note, I have hinged doors on the outside of each laying box to open and gather eggs without going in. I opened the door on a box a few years ago-- a 6 1/2' chicken snake was laid up on the straw and had eaten all the eggs. I like to have shit myself, with that thing right before my face. Got a Ruger Bearcat with CCI shot, tuned his ass right on up.