Why does my call duck "moonwalk"?

[indianaducks]

@indianaducks has Mallards.

Oh that's weird... no idea what that is. I have two mallard hens but they don't do that. Thanks for the tag Miss Lydia.

 

[Miss Lydia]

That looked a little worrisome. I didn't know thought you might have a Mallard drake.

My juvenile mallard has been doing this, is this the same as yours? Any help would be appreciative.

Are you using any type of niacin supplements?