From what it sounds like, it could just maybe be a birth defect since it is so young, but if you just now noticed it then she might have fallen and twisted it. another idea is that she might still need to be getting used to walking. keep an eye on it and if she has trouble getting food, guide her and help her to stabilize herself so that the injury wont become worse. if you are still nervous I would take the duckling into the vet. they might give her a splint and some meds but that might be it. from what you said it doesn't sound like anything to major but it isn't something that should just be left unnoticed. good luck! hopefully your little duck will be fine.

I have a blue swedish duckling and shes about a week old. I woke up this morning and noticed that her left leg is out to the side a bit and her right leg seems to be in a bit so her whole bpdy is tilted to the right of her feet. She can kid of walk but she just trips and falls to the side. I have three others but they all seem fine. I dont know what to do please help.