I have 3 hens (no roosters) just over a year old. They had been laying really well for a while. Now suddenly they have stopped, maybe an egg every few days. And... they've had bald butts for quiet a while. they seem to have molted in march and their butts never filled back in. Is this related to them not laying? I've read lots on here about chicken's stopping for different reasons. All I can figure is maybe the bald butt has some thing to do with it. That and/or the warmer temperatures, but it's not THAT warm?.... help.