I have a small white hen, not sure what breed she is, but she is not acting quite right, I noticed Saturday that she was lagging behind when we would feed them, she would eat but not alot, did see her drinking a good bit though. When we let them out she stayed behind in the coop, I took her out to see what she would did, she went and found her a shade and sat, I tried to give her some yogurt and oatmeal with a little vitamin hidden in it, she ate a little but not enough, I noticed her droppings and they looked normal. I but her in a pen by herself to make sure she was eating and drinking, she is a little but she still just stands around, won't try to run acts like she's in a daze. I noticed this morning that her dropping was yellow, small and looked watery, not really running though. Any ideas? I did notice tape worms last week and gave them wormer, think that is what is wrong.