I have a Bielefelder chick about 3 weeks old. Today I noticed she is much smaller then her hatch mates. When I picked her up I noticed her crop was swollen and squishy, like full of liquid. After reading through the posts, I vomited her and about half a teaspoon of yellow goo came out. I cannot feel anything hard. She has only been in the brooder with access to organic chick starter and water, as well as wood chips and poo. I still have her in the brooder with the other chicks. I will be watching to see if she takes food. I suspect that this has been going on for a couple of days due to her smaller size. Do I need to pull her out? Will the yogurt trick help?