Help! Something is wrong with one of my little ladies:(

Hello, I’ll start by saying I’m a noob and have no idea what to do. Thanks in advance for any help. So a couple days ago we noticed one of my favorite little chickens was standing kinda funny. Over the past day or so her walk is definitely different and she seems like she’s having trouble getting around. She’s almost straight up when she walks and just doesn’t seem very coordinated or able to do her normal chicken stuff. Anybody know what this is? I want her to be ok so any advice helps. Thanks.