So, we have five vaccinated babies of various breeds. Within a few days of getting them home, we noticed one chick had a standing up resting position of one wing being kept lower than the other. What I mean is, if she's not actively moving around, one wing seems to slip down a bit lower. When she starts moving around, she pulls it back up and looks fine. She's not just stretching, we have other adult birds and I know what that looks like- this is something else. We assumed it was some sort of weakness or anomaly from birth and we don't plan on hatching eggs from her, so we don't mind if she droops her wing a little. Starting yesterday she seemed a little lethargic, but nothing too concerning- it's been quite warm and humid here in NY. Then today, she's been laying down every time she stands still and whenever I check on her she's laying down. I don't see anything obviously wrong with her and when she sees me at the brooder "gate" she hops up and runs with her sisters. I've seen her eat and drink without issue, but there's definitely something wrong. What could be going on with her?? Also- I added some chick electrolyte to the waterer this afternoon and completely changed the brooder bedding (some by the "gate"/door had gotten wet during heavy rains today). What else can I do? Thank you for taking the time to read this over!