I have 15 hens and none are laying I was getting 1 egg a day and then it stopped and I have not had anything in over 2-3 months. All are healthy and happy hens and they are not being bullied by the others. They have layer and scratch with oyster shells available at anytime. They also have a large lot to roam with plenty of grass to scratch in. I have checked for worms and for mites and nothing. I am in Tennessee but the weather has been more like spring here. I dont know what else to do. TIA!