I have a total of 38 hens, thirteen are about 17 months old and molting. I know these girls have probably stopped laying for now. (Can I expect them to start again and when?) Our egg production has gone from 24-29 eggs a day to 6-10 eggs per day. The other remaining hens, aside from the 13 I mentioned were all hatched last year and they started laying this last fall. We have kept lights on them all winter, and still have them on, to provide 14 hours of light per day. About 4 weeks ago I brought home 2 new roosters, and then two weeks ago 2 more. I'm bringing in new blood lines so I can hatch some more chicks. Only one of the new roosters is more rough with the hens than previous roosters we've owned. He will actually chase the hens around the barnyard until they finally let him breed. Would bringing in new roosters cause this drop in production? If so how long should I expect until it comes back up. I can't think of anything else that would have caused this. I haven't been doing anything else new recently, same food, water, and routine, etc. All the hens are still there, and nothing has been raiding the nest boxes. Any help would be great.