Hello! We just got our chickens on Sunday. They are all pullets - 1 buff orpington, 10 wks; 1 americauna, 10 wks, 1 barred rock, 14 wks and a second americauna, 14 wks. The older Americauna doesn't seem to be very happy. She barely gets up and leaves the coop, and is not energetic and...