We have a 4 week old pullet that we noticed was not walking very well around 5-7 days ago. We thought it was a leg at first, but now seems to be both legs. She sits a lot, even to eat. She hobbles like a penguin and her feet turn out a little bit. She is on the decline, walking wise. Please help! It's my 7 yr old daughter's chick and she is so sad. Thank you!