Hello, I’ve got 5 ex batt. hens and we used to get around 4 eggs a day until around 2 weeks ago. I’ve noticed now their feathers look picked and we’ve had no eggs lately. I’ve looked for nests outside egg boxes and there are none. More worryingly one has extremely red and bald chest- is this a broody or is it worse? I’ve looked for mites and there are none.