Ok I have 5 chickens and I recently notice that one of them is loosing a lot of feathers; it's not like I can see her skin. However she is loosing more than normal feathers. That particular chicken It's going to be a year that I got her she was pretty young when I got her. I check her feather for any type of bugs and I don't see anything. The weather it's also changing here in CA; It's normal?