You only need 2 nests for 6 birds.So we have decided against buying the pre-built kit we were considering. The kit has shipped but we found a man near us that builds and sells good quality homemade coops. We are going to send the kit back and bite the bullet for return shipping. Too many bad reviews on the kit. The new coops have a larger area for our 6 birds and 6 nest boxes.
Plan on at least 4 sq ft per bird.