I have 6 chicks who are about a week old. Two of them started opening their beaks constantly and looking distressed (not sleeping, eating and drinking very little) yesterday morning. We separated them yesterday and one died last night. I was sure they would both die, but the one who looked worse yesterday was peeping this morning and eating her food. She looks "normal" today except for slightly rapid breathing and frequent sneezing (?) poop is normal. I do have another chick with diarrhea so I'm treating them all with corid starting today just to be safe. But what to do for the sneezing chick?? Could it be respitory? Should I give her antibiotics? I've been giving her yogurt in addition to her food and water. Thank you!!