Chicken acting unusual

[Farmer Mike S]

I have 10 chickens, 7 weeks old, and ones acting weird and in concerned. This one chicken, she stands in the corner and doesn't move or make noise, while the other chcikens jump all over and make lots of noise. I separated her with just food and water and she just stands there and won't eat or drink. She also lets me pick her up easily without a fuss, I'm concerned, what might be the problem?

 

[A Chicken Owner]

I think she is sick. Analyze her droppings. If they're green or have blood in them, she is sick. If her droppings are normal, I'm not sure what the problem is.