I have a flock of 16 laying hens. They just turned a year old. Last fall I was getting 14, sometimes 16 eggs a day. Now I'm lucky if I get 10. Most days I get 6-8. What's going on? They had a rooster in with them who we just got rid of (was too big for the hens and really tearing them up) and we've since added a few new hens to the flock. Could the changes in the flock have made them upset so they're not laying? Other than that, nothing has changed. Same food, same coop, just a lot less eggs. Any ideas?