I have been searching and reading threads for 2 hours, and I give up. I will have 11 hens laying in a few weeks (6 layers now with 5 18 week old coming on. I have 3 12x12x12 nest boxes that the older girls use for laying. One hen sometimes lays on the floor (or just about anywhere she happens to be when the urge hits -- silly Campine). Are 3 boxes enough for 11 laying hens?