How big should my coop be? Meghan July 30, 2018 19:26 Updated Follow We recommend that you give your birds 2-3 square feet of floor space per bird. Related articles How much roost space do I need? How big should my run be? Chick Brooding 101: How to Raise Chicks from Arrival to Fully Feathered How many nest boxes do I need? What is Vital Pack (and Vital Pack Plus) and how do I feed it to my poultry? Comments 0 comments Please sign in to leave a comment.