Hubs woke up early and said the layers were making a huge racket. I'm camping on the sofa, and can't hear them from here. Turns out they were out of food! Poor girls. Been relying on the boys- one zooms out to let them out before school, the other runs out in the evening to lock up. Never thought to tell them to check the food. I just do it automatically. Think it was just for this morning though.