The overnight temperature is still in the 40s and highs in the 50s and 60s. Tonight is particularly cold since today's high was 43 degrees. We are now on day 10 from the first laid egg. These eggs are fertile and we have eight of them. We have a black australorp and have left the 8 eggs in the nesting box to try to encourage broodiness. We do not have access to an incubator so the only way to start incubating these eggs is under a hen. It is too cold for prolactin to kick in. Since there is no incubator available on this 10th day since the first egg, I decided to get our black australorp from the large coop where the other chickens are and just put her in the 9 square foot coop alone with the nesting box of eggs. I just did this now. Is it okay that she is roosting alone in there? Do I need to grab her friend and put a friend with her in the coop with the eggs? Are there any other suggestions? Thank you.