What is the average height of the Ameraucana, Orpington and Barred Rocks? I just stared building my coop and run. Due to limited space I wanted to include the area under the coop as part of the run. I was thinking of elevating the floor 2 feet off of the ground so that the hens could walk under it. Will this be enough height for them? Just started with the ditch for burying the hardware cloth around the outside yesterday. Pics will follow after I get a few steps into the project.