I think two of my hens are Ameraucanas. Do they need private, really dark places to lay compared to other breeds? Both of them laid in the nest boxes along with my brown egg layers and then both suddenly stopped. I have looked everywhere for eggs where they free range in a fenced in yard. A yard barn on a slope has one half blocked off. They use the open half for shade and I have not seen any eggs there. Yesterday I heard a chicken singing the egg song by the yard barn and later saw an Americauna squeeze out from under the half that was blocked off. I found a hole and took off the access panel and pulled out old leaves and eggs with a rake. The yard barn is completely shut up now. Do I need to lock the chickens up in the coop during their normal egg laying time? This is my nest set up. I have 4 nest boxes for seven chickens.