Hi, I'm looking for advice. I have 4 hens in a massive coup and they get let out every 2 or 3 days to free range in my garden. Yesterday they were out and we noticed about 10 white feathers on a grass, assumed they were from my only Sussex hen . This morning, I went to the coop and the hut is full of her feathers. She seems to be grooming, not excessively, and they're just falling out. I've had her a year and last year she didn't molt to this extent. They are coming out round her neck, back and breast. I'm worried. Please can anyone advise?