Yesterday, i checked on my chicks and the now sick chick was hopping about and perky as ever. then i came back thirty minutes later and she was hunched over and not eating or responding when the other chicks jostled her. they were in the coop at this time, getting used to their new home. I don't know if she ate something bad or has sour crop (i don't have any idea about the symptoms of sour crop) but she acts like how you feel when you have the flu, nausea and tiredness. She doesn't really eat much at all and isn't drinking. Any ideas to what the problem is?