I bought 6 black sex links at TSC 3/2/23. they began laying brown eggs mid June through mid July with the sixth laying a blue/green egg on Aug. 10! They are 7 months of age and the fall season is beginning. September 9 is the last day that sixth pullet has laid an egg. She stays in the (roll away) nest box night and day. No eggs to sit on. A few days ago I brought her inside. She ate, drank and pooped. She is not egg bound. She has lain several large double yolkers. I now have her in a dog crate within the coop hoping to break broody, if in fact that may be the issue. Any thoughts?