Help! My duck throws his head back!

[Girlwithducksandchickens]

here is a video, she was only inside because a predator tried getting their pen open that night, so they were inside that gate area. she only does this when she seems scared, stressed, drinking water or eating. any other time she acts like a happy healthy duck. it used to be way more violent though but i help hold her head down and comfort her if it gets bad.

I know what happened. You need to put him water in its head and body FAST. this happened to my little chick but didn't survive. I saw one video of a man that this happened to his chick and he got the chick, put some water on it, on its head and body, and the duck stopped doing that.
Good Luck!