I have had chickens now for 6 years, but this I have no clue about! I have recently got a new batch of 8 chicks, all mutts, from my uncle. I have had them for about a month and they are about 5 weeks old. They have all been fine until now. One of the little hens, Truffle, is now listless and she just lays there when you pick her up. She just stands off in the corner of the pen not really doing anything. The good news is that she still will eat and drink, and is not being pecked on. I noticed this about a day ago but she is worse today. I have dealt with many sicknesses and one very bad predator attack but I know nothing about chick illnesses. Thank you!!!