I have been using the same coop for many many years. It really isn't a coop it is just a shed that I have being using! In the spring when the snow melts it gets disgusting in the coop all muddy and gross! So my Mum said that we aren't getting Chickens in the spring unless we build a new coop so I need plans! I get 50 birds so does anyone know how big I should build it? My other coop is to small. I am using concrete for the floor. Any ideas would be greatly appreciated!