Are they getting enough niacin? I know we´re always saying it, but it seems a huge problem. And these symptoms sound like it could be niacin deficiency. Brewer´s yeast.One of my four week old goslings was fine an hour ago, but now she won't walk, can barely hold her head up, won't eat, won't drink, cold to the touch, no vets here will do ducks or geese and I have no idea how to help.