Reading all these messages about possums, coons and other no-good-rotten-predators has gotten me thinking about my coop set up. Currently its a 10x14 metal shed that we bought from Lowes, we shut the doors at night after the chickens have all decided to go in ect. The building itself is on 4x4 wooden beams which sit on solid concrete blocks that are flush with ground level. The area where they range has 4' feild fence with the graduated spaces from just a couple inches to 8" gaps in the openings. On the outside of the fence I have electric lines 4" from the ground and 3" above the top of the fence. The inside of the fence is covered with 2" chicken wire that is 5' tall. I haven't seen my chickens make it more than a couple feet off the ground, some of them are having minor issues with the roosts...lol My questions are these: 1. Even if the outside run isn't covered from above, will the electric lines keep predators out? We plan on having them be able to free range in our 1 acre orchard once the weather is nicer and they start being a little more brave about being outside in general. 2. Do you think that a digging animal will still be able to get inside the building? What about through the metal, has anyone seen a predator do this? 3. Do I need to put some kind of a latch on the door? Can raccoons, possums, ect slide a door open or would that be overkill? I want my chickens to be safe but there are limits budget and otherwise to what I can reasonably do.... Thanks.