Can someone help me figure out why only my 2 year old hens stopped laying? I have 3 hens (2 years old) that completely stopped laying about 4-6 months ago. I also have 9 younger hens (8 months) that are all laying just fine. 12 hens total, none acting weird/lethargic, healthy looking comb, eating normal, have easy access to clean water and food. They stay in a large coop (converted shed), 6 nesting boxes, and have a large run (1000is sqft) and free range outside their run daily when we're out with them. They spend the vast majority (90%) of their time in their run and I regularly check for other nesting areas. They were moved into the shed from a smaller coop about 9 months ago, which they laid in for a little while without much coercion. We did lose a hen from that original 2 year old group earlier this year to an unknown illness, and I feel like that could have been when they all stopped? Again, the younger hens are laying just fine and all 12 seem very healthy and happy.
Thanks for the help!