Depends on the size of the broody and the size of the eggs. I generally give large, soft-feathered fowl around 9 but prefer not to use the standard triangle shaped broody coop. In the past I've rigged up everything from a calf-dehorning crate to a water tank as a broody coop. I also use shavings as bedding with just a few wisps of straw for her to arrange as a nest - chicks can easily get tangled up in a forest of bedding in a small space.