I have a chick I got with a batch for about a week. It's laying down, gasping for air. The others seem fine for now, but this one looks to be dying. It's one of the larger chicks and it was in perfect shape. I heard Tylosin in the water can help, but avoid ACV and electrolytes/gatorade. Ionly have Tylosin injectable though. It sometimes freaks out and runs short distances and falls over, sometimes on its back. It won't eat or drink. I have pine shavings.