Over the past couple days I have noticed my hens comb being a pale pink and I noticed yesterday that a few of her scales were white on each leg, And now today She had some runny poop and she was acting as though she was choking. She would tilt her head back like they do when swallowing water and she would just open her mouth wide and then close it again and go back to normal then a minute or 2 later she would do it again.. Am I overreacting? should I or shouldn't I be worried? could it be related to molting? other chicken looks fine. Any help is appreciated!