I am considering re-using a structure that is currently 3 foot off the ground. I have seen chicken coops that are as high, or higher, so I assume that for a chicken, as long as a ladder is provided, that would be just fine. But the (possible) end goal for that structure would be ducks. I lost them all this summer due to dry weather and low water plus active predators and no adequate shelter. I have not seen any specs for ducks. I know they can climb a hill just fine, but would I be pressing my luck, expecting them to accept such a high access? They are dirty beasts, of course, so leaving the floor at 3 ft would make cleaning a lot easier on me. Help!