I have four hens. All my hens are only three years old. We live in Florida where it is almost always very sunny. I have not changed their food, there are no changes in the flock, and none of them seem ill at all. They have always been free of medications and vaccines. They have always only eaten organic feed and treats. The only medication I've ever given them is some organic oregano oil mixed with olive oil and garlic. My Golden Buff use to lay every singe day, the others all laid at least five days a week. Back in June last year two of them stopped laying from molting. Every since then they all have molted at least three times. They haven't laid the same since that time. After they started laying again the first time they almost laid normal but not as much as before. I used to get 3-4 eggs a day, now I get one egg ever couple days. My Barred Plymoth Rock was laying again last week but she has since stopped again also. My Golden Buff no longer lays once a day now just every other or couple days. I think they are all done molting now. But two of my birds haven't laid since September this year. What could possibly be causing them all not to lay or to molt multiple times in a season? The only things that I can think of that may be different is the neighbors have large pit bulls that bark most of the night. One of them did get in the yard at night when the girls were all safely in their coop. He couldn't get to them but I'm sure it frightened them to have him running around in the yard. It was a one off so I don't think I need to worry about the dog again but perhaps the girls don't realize that? Another thing that may be different is that we got an infestation of mole crickets which ate all the grass. So the girls have very little if any grass to graze. There are weeds they like but that's about it. Also one last thing is that we use to close the hatch at night but the air conditioner broke (yes they are that spoiled) so we leave it open at night. They are still safe inside the coop which is inside of a fully closed in run with hardware cloth and mosquito screen. Before we would close the hatch then open it when the sun came out to let them out. So that's all that is different. They still have food all day and they get treats most nights to get them to go in. Oh wait! The other thing that is different is their water. They use to have one that hung in the run but it was steal and began to rust so we took it out and put one with nipples instead. So what do you think may be the issue? Thank you for your time. Happy Christmas!