I have 9 wk old (approximate, it was given to me when it was one or 2 weeks old) NN cross. I also have 2 other chicks from same hatch. This one wasn't as active yesterday but was eating. This morning she was in the corner of the coop not moving. I felt the crop, but I am not sure what I should be feelinf for. I don't see in bugs on her and her bottom is clean. I am not sure what else to look for or what to do for her. Please help. The chick died. I have quarantined her hatch mates, but they both seem fine.