Has anyone done a study on what chickens like in the way of perches? I see a lot of owners like flat 2x4's, some like them on edge, & some like branches. I have 2x4's flat in the coop but some of the chickens will roost on a short piece of plywood I have in the coop. It is only 1/2 inch thick while others are happy on the edge of the feeder and water bucket. (I have had to put chicken wire around the top to stop them). I think I will get a couple of branches to try. I am going to replace a couples of the 2x4's and see which one they like best. Going to try and arrange them so they are at the same height.