Pekin duck struggling to walk, uses wings to balance

[Luv Ducks]

So I know this post is a couple years old but my fully grown Pekin female duck is seriously doing exactly what your duck was doing in ur video. Did u ever fine out why and what to give her to help her. Please respond I love my ducks like there my kids. Hate seeing them in pain or looks painful

Could she have a niacin deficiency? I know Pekins are prone to leg problems because of the weight they carry on them. Just wondering???