Thought my husband and daughter were playing a trick on me - but they insist they weren't. I only put the nest box in the coop today as I read somewhere you should keep it out whilst they are young. I thought they should get used to it. One chicken went in there fairly soon afterwards - but I thought she was just exploring. Aren't they too young to be laying? We have four hybrids - 2 we have had since hatching, Warrens, who I know are 16 weeks and 1 day old. We got two others last week - a speckledy and a bluebell, who are apparently 18 weeks old (19 by now). It was the speckledy who went in the nest box. Is it hers? Sorry to be so clueless - thought I was certain this would not happen soon and even the woman at the farm where we bought the two new ones, told me 24 weeks.... I will try to upload some pictures if I can. When we cracked the egg (albeit a small one, but with a perfect shell)it had a double yolk. Any comments welcome!!