My Barred rock's attitude has changed for the worse. She is my only chicken that has stopped laying during the short days. She stopped squatting, pecks more at the other hens and keeps her distance from me. She use to be my friendliest girl. I use to be able to pick her up and pet her. Now she screams bloody murder if I try. Will her temperment improve as the days get longer and she starts to lay again? Or is her behavior not related to laying/day length? She appears healthy and fat and has no bugs. She is eight months old.