Khaki campbell drake with Tourette syndrome?

[Jessdekk]

Hi! My dad has a couple of 6 month old drakes, one has a bizarre head twitch to the left, like a nervous spasm or something. Any ideas what that's all about? It slowly falls to the left then snaps back repeatedly.
Thanks!

 

[nuthatched]

It's niacin deficiency. What's there diet? Does he get any niacin supplements such as brewers/nutritional yeast?

 

[ruthhope]

As the duck has symptoms, you should use High Level Vitamin B Complex (Durvet) to treat until the symptoms resolve. It is a cow/goat preparation bought from a feed store or pn line from Amaxon. She needs 1ml soaked into a treat every day until the symptoms resolve. Stay and watch her eat the treat so you know she got the dose. Nutritional yeast or brewer's yeast is added to the ducks food to prevent future niacin problems.

 

[Miss Lydia]

Here is info
https://www.backyardchickens.com/threads/niacin-deficiency-in-waterfowl.1367557/