So this is my run it is 6x3 feet. And I have two chickens. At first some people said it was a good size coop, but now people are telling me it's a little small and I should get a third chicken just in case one dies. I do not free range because my chickens could probably fly over then fence in neighbors yards and I don't want that( grouchy old neighbors.!) but I do move the run around every two weeks or so so they get a new part of my yard to peck and scratch at. So my question is, is this to small for two chickens.? Or am I able to get a third one still.?