I have 12 hens and recently they have been only producing 3-4 eggs per day. a few are molting so I get that but I have lights on them (so they get 15 hrs a day) and it has been warm here so Im not sure what else could be happening. I have checked for lice and mites too and I dont see anything. Any thoughts on how to kick them in to gear? Hens are 1 -2 years old.