So, like many a chicken owner, I am using an old (VERY OLD metal) shed as a chicken coop for our 10 Black Australorps. Last year we lost all of our chickens to raccoons, who climbed over the run fence somehow. This year, I covered the whole run with chicken wire tightly bound together. Two days ago, the raccoons found a new way in- they ripped open the metal shed!!! Took 7 of the chickens in one night! Originally I thought they killed 8 (found only 5 bodies), but one of the chickens returned miraculously to the coop later that day!!! I worked all day yesterday creating a loft in the shed, where I don't think the raccoons can get in- but, unfortunately, neither can the chickens!!!! How do I teach them to use the walking plank/ladder? What is the maximum ramp angle the chickens can climb? Is 40 degrees too steep with "steps" every 3 inches or so? I've been lying awake the last few nights trying to come up with a solution...and worrying that the raccoons will still get in and I will find another pile of chicken bodies Anyone have any ideas?