On and off I have been having where a duck will freeze tail down wings out try to hold themselves up and then lay down. Lately, this has been happening a lot and now in three ducks. There run is clean no mold, no chemicals are used, and their food is not moldy or old. They are provided additional brewers yeast, probiotics, sea kelp, herbs and a handful of scratch each night. I have been to the vets office multiple times and they have no clue but now I have three ducks doing it. Any help would be great they have been started on a vitamin b complex also. There is a video posted below
