LF Cochin roosts and nest boxes

[dak]

I am just finishing the exterior of my coop and need to design the interior. Could someone give me suggestions on the proper size/ height/distances for LF Cochins for roosts and nest boxes. Thanks for any and all wisdom, dak

 

[Mahonri]

Roosts 4 feet above the coop floor.

nest boxes 3 feet above the coop floor and they should be at least 12X12X12. I had a giant partridge cochin hen who was a little cramped in mine but she did fine.