noticed earlier today one of my chicks seemed to be slightly off balance when walking that she would stumble a bit and put her wings out and go along her way. She is running around still and pretty much acting like herself but the stumbling is getting worse. I just checked her crop a bit ago and it seems squishy compared to the other chicks that have harder crops. I tried to search but couldn't really find what it is or how to treat it. We just put them out in the coop and run about a week ago so she has been eating grass, dirt, bugs etc. What do I do and how do I treat her? My daughter would be devastated if anything happens to her.