I have four 9 month old chicks (1dark brahma, 1RIR and 2 delawares) that have been laying properly in the nesting boxes for a few months. I have one dark brahma that early on decided to lay in the yard a few times (always the same spot for a few days) but then went to the boxes like the others. Well for the last couple of months she's been sleeping on top of the coop at night and not going inside. Today I found three eggs under the roost and one right outside the coop on the ground. Not broken but they had poop on them and I'm not sure how long they were there so I tossed them out. I can tell by the egg color that two are from the brahma. The other two I'm not too sure. Any ideas on whether sleeping outside of the coop may cause this to happen? Or is there something else I should consider? What can I do to prevent this? I have a couple of easter eggs in each box.