My 6 hens are now 6 weeks old and there has been 2 cases of "bloated crop." I do not think it should be this common. These are soft crops, no bad smell that I can sense. When I make them vomit, it's just chick crumbles and water. These crops do not empty overnight, but only grow larger and larger. One chick got it about 15 days ago. We vomited her for awhile, gave her olive oil, separated her, etc. She stopped growing and got lethargic. Then we gave up, put her back in with the others, she promptly ate a cropful of sawdust. She was in bad shape - we did surgery on her and she got better - her scab is almost 100% gone and now she seems to be filling up with fluid again. Another chick has a big soft crop. She's weak and lethargic and in pretty bad shape. We keep them in a cardboard box with pine shavings, medicated chick crumbles (from Tractor Supply), and water from a nipple. The chickens that got this are both "Red sex links." We have two other very healthy red sex links and two other very health Tetra tints. This is bizarre. What am I doing wrong, and how do I fix it? I did not get chickens to keep on doing surgery on them!