A couple days ago I went to rural king and got some chicks, 2 leghorns, a jersey giant, a buff orpington, and 4 bantam chicks. all the chicks are doing great except for the tiniest bantam. Shes been acting very weak and just lays around. I haven't seen her eat, and her crop always looks so empty. Ive only seen her drink a couple times. her poop has been kinda runny too. I don't know what to do, she seems to be getting worse. Please help!