This am I found my black copper maran laying on the floor of the coop under the roost. She is barely moving. When I picked her up, she does move her head, neck, wings and legs freely, but weakly. No obvious injuries. Her vent is dry with a little crusted white on it. Up to this point she has looked healthy and robust, eating, acting like a chicken, except that her comb has been slightly pale in comparison to the other two I have. I bought her with two others about 2 months ago. I also have 6- 4 month old pullets and 6 - 4 month old guineas. I have not seen any unusual poop, but I did Isolate her so I will examine it as it comes. All the other birds seem normal. I did try an organic worming a week ago with a pumpkin half filled with garlic, dandelion leaves and carrots. I have done this before and they all love it. They are in a 12 x 10 coop with a 11 foot high ceiling and roosts from floor to ceiling. They have an covered outdoor run 10 x 11. They free range a couple hours a day. Bedding is hay mixed with pine shavings. I am new at this...any ideas? by the way they are on chick grower because of the other pullets, they have oyster shells always available, and occasional scratch for treats..