I am curious. At what sustained temperatures and lighting will impact the ability of a hen to lay eggs? Does it depend on breed? Daily temps are about 45 - 50 degree with about 10 hours of light per day now. I have 2 NH Reds and 1 Astralorp which started laying about 2 weeks ago and have been consistently laying eggs almost daily. I have one Ameracuana which is the oldest of the lot (about 32 weeks), she has yet to lay any eggs. Is it the temp? light? When should I start being concerned about her ability to lay eggs? And yes, she is a hen. thanks!