Yeah, we have the pen and house wrapped in hardware cloth so nothing can actually get in the house or pen, but this girl was actually under the house. I know she was LOOKING for a way in. We don't mind the snakes and actually WANT the king snakes and black snakes in the fields ( cause they keep the copperheads away) But I don't want them around my ducks. And does anybody know if a big black snake like that will eat duck eggs? There's no mice ( that I've seen anyway) around the duck house or pen, and I was just wondering what could have attracted that big girl?