I have a flock of 8 hens. This one is looking a little funny. The feathers on her back look almost like someone cut the tips. Zoom in to see. Also, she’s got a bald spot on each “shoulder blade.” We don’t have a rooster. She recently became broody. When I went to take her out of the nesting box yesterday (I’m trying to break her from her broodiness), she had thick drool coming out of her mouth. It was like the consistency of mucous, but it was clear. Molting maybe? Someone mentioned maybe depluming feathers. Thoughts? And if so, how can I treat her with a product where there is no egg withdraw? And do I need to treat the whole flock? Everyone else looks healthy. My girls just turned 1 in April.