Once she stops laying you can give her daylight for some amount of time every day but keep it below the level that triggers her to start laying again, it varies per hen. Some folks have had luck with about 7 hrs of daylight. Some can handle ten hours. It really depends. Good luck with your...
How is your hen today? If she's in a bad way, you might try posting on the Emergency Forum. Her eggs getting bigger as she goes on is unfortunately genetic, there's really no way to make them smaller again. Except you could try getting her to stop laying by reducing daylight to simulate...
I've been very happy with my PBEs. They have varying egg shape and color, but have been very healthy chickens, almost daily layers most of them, no shell issues or double yolker issues, and could do great at free ranging if I let them. I've also liked the Starlight Green egger, although they...
I've had ISA brown, Golden Comet, Buff Orpingtons from Hoovers. Red Star from Murray McMurray, White Leghorns from Hoovers and Murray McMurray, Starlight Green Eggers and Prairie Bluebell Eggers from Hoovers, Whiting True Blues and Cream Crested Legbar from Murray McMurray. The only birds I've...
Agree with azygous, most of those egg issues you describe are genetic. Many production birds/breeds don't have trouble for at least the first year or so, some do. Depends on the bird and the lines.
Leaving the light on over winter probably had nothing to do with things because she's less...