Hello! Out of my flock of 5 hens, only one is laying! One is raising chicks, so she gets a pass, but I don't know why my other 3 have completely quite laying!? They are around 3 years old. They free range and have a big clean coop and a nice roo. They appear to be healthy and happy, but haven't layed for months! They stopped around fall, when molting, and never started again (one did, and has stopped again). Could it be age already? Or maybe don't like the roo mating (he's a fairly new addition).