young buff orph. she has been laying eggs for about 2 months usually 1 per 1.5 days. about a week ago she started puffing up all her feathers like a giant blowfish and guarding the entrance to the coop from the other chickens. In the last 3 days she started staying permanently in the nest box. I push her out and she will go eat, but when I leave she is back in the next box within 15 min. She hasn't laid an egg in 3 days. Has she stopped laying and is being broody, or is her egg stuck and she is having trouble laying. What should I do about it