My chickens (7.5 weeks old) are currently on Tylan (in their water) for an upper respiratory thing. Several had started sneezing quite a bit and shaking their heads soon after we moved them outside so we went to the vet. We had a bit of a cold front come through and maybe they got a little chilly. We are on day 4 of antibiotics. They're supposed to be on it for a total of 10 days. Now, I have one with a significantly soft/squishy crop. Several others have somewhat soft crops, but not like this one. I know antibiotics can cause sour crop. This morning, her crop was much smaller than last night, but I could still feel it and it was still soft. The cold front is over and now it is very hot here in Texas and I noticed they are drinking WAY more water the last few days. Is it possible that the excess water consumption is making it soft or is it more likely sour crop? They are all acting fine, eating and drinking, pooping normally. We go back to the vet in a few days for a follow-up so I can take that one in with me to see what he thinks. Just didn't want to wait until then if it's something I need to address at home now. TIA!