I have one hen that is looking really horrible. This is my first time raising chickens. They were given to me last year around this time. They all layed eggs well at the time. Then when spring hit, they slowed to about 1 to 2 eggs a day. Now, I haven't gotten an egg in 3 days. All of them look fine except for one hen. She has a large crop. I felt of it and its soft. There are no feathers on her underside and one spot that might be a sore. Also, she is loosing feathers around her wings. None of these chicken like to be touched or held. She seems to be acting normal. She is eating. I have provided grit, oyster shells, layer crumbles, and fresh veggies. Pictures below. Any help at all would be greatly appreciated. Thank you!