I noticed my 4 week old chicks sneezing 4 days ago. I think it's sneezing anyway. It started right around the time when we switched food and the new food is kind of dusty. Could it be that or are they about to get really sick on me? We already did the cocci thing and they seem to have recovered from that. They are all active and eating and I am not seeing anything abnormal in their poop now. Thanks for any feedback.