I have a question for you guys.. I'm def a new chicken mom and probably over worried here. I have 6 chickens all girls, got them from tractor supply for our little girl (and me) the first weekend in april, so they'll be 20 weeks soon. anyways they have the little gill looking spots on the side of their faces. everyone have it and they are on the same spots on each side. I've looked all over the internet and can't find anything about it. I'm not sure of the breed, but they are white with red combs. thank you!