I went about 45 degree angle. They use that just fine. I've not a clue what too steep would be but do suggest you attach the end low on the coop (they'll easily hop up or down the first 6-8 inches to door) so the other end of ladder isn't too close to run wire. Sometimes they run down or fly last bit of ladder and can hit the wall. Just thinking of any combs getting nicked up on a wire wall.
The framing under coop is 2 ft high, ladder ends 2 ft out other side of door. Gives you an idea anyway of what I mean by the ladder does not have to be right too the door so you can soften the angle.
Edited by Egghead_Jr - 3/26/12 at 1:59pm