Unfortunately we lost her. She died the same day I posted this. I have treated all the others with sulfa3 and cocciprol. All well except 1 which seems to have sour crop. The crop is squishy and won't empty. Could she have a blockage? I have her on niltatin. 1ml twice a day. She is getting weaker. I withheld food and water for the first day I noticed she wasn't well. I'm now feeding her on a slurry of egg yolk, 1/8 cup weak green tea, bird vitamins, probiotic powder, Greek yoghurt, and electrolyte. Her crop is not emptying she is passing white runny poop. I have been massaging her crop and now have made her a crop bra. She won't stand up. I have separated her from the brooder but her box is right up against it with 'windows' she can see out of. She is close enough to touch the other chicks. But she is no getting trampled. I have a chick warmer in with her. I'm trying to feed her every couple of hours. 1ml or 2ml of the slurry. Its all I can give her to keep down before it's leaking back out of her beak. Could she have a blockage in her gizzard maybe?