I have a very healthy, free ranging flock of 15 hens which produce 10-12 eggs per day. 2 weeks ago I introduced 5 new hens @ 5 months old and a rooster into the flock. Pecking order was quickly established, the rooster is "doing his job" and all the girls seem happy and content. Well, beginning 5 days ago, our normally productive flock has now only been giving us 4 eggs a day! What in the world! We live in SC and have had good weather, it's been slightly cooler in the last 2 weeks (only 85-90 during the days & cool at night), they act happy and healthy. Other than STRESS, I can't figure out this massive egg drop. Does anyone have any other thoughts? Thanks.