About two-three weeks ago I moved 8 hens and a rooster that are about 16 months old and 12 younger hens and 5 roosters that are about 4 months old into a new coop. The older hens and the younger chickens had never met each other until I moved them to the newly built coop. The coop has plenty of space for all the chickens. My older hens layed eggs before I moved them and also layed about three days after I moved them, but after those three days they stopped laying eggs. One of my older hens even died, but I think that could be of natural causes because she was healthy and looked fine that morning. I’m wondering if they are getting stressed because I have too many roosters together. Why are they not laying eggs now? Is there anything I can do to help them in their egg production and health?