Roosting bars are where your chickens should perch to sleep at night inside their coop.

How high should roosting bars be?

Set the bar high.

Inside a coop, place roosts eighteen inches or higher from the ground. Some breeds are better able to reach higher roosts and mounts may be placed as close as eighteen inches from the ceiling of the coop for larger or more agile breeds.

Do chickens prefer round or square roosts?

Although hens roost relatively flat footed, they do like to be able to curl their toes around the edge of the perch at the front and back. This means that chickens prefer round or square/rectangular perches when compared to a flat perch such as a board.