I am new at raising chickens. Just bought 8 hens last Saturday. I have had them almost a week and love them !. I have built my own coop for them and they seem to like it. Inside the coop I placed an old wooden shelf 5ft high and they get on the 3rd from bottom shelf at night and sleep. Is this roosting? Should my ladies be supplied with something else in the coop to roost on? Would there eggs fall off they were roosting? My coop is about 6 ft high. Can someone help me with this