hello everyone we just got ourselves 6 little duckings a few weeks ago. the first few days all seemed well but then one of the crested ducks started getting wobbly legs. the other 5 are just fine. I live in a very small secluded area and every feed shop around does not carry niacin and looks at me a little crazy when i ask for it. I did buy some vitamins for them and had been putting it in the water since the first day we had them. the wobbly legs seemed to have cleared up for the most part except when he gets really excited then he starts falling all over the place again. Ive read about brewers yeast also here, another thing not available to me so I plan on just ordering some online today. I wondering if anyone could link a good product to buy it would be greatly appreciated. also is it ok for the other ducks to have some also or do i need to separate the one from the others so they dont share water, I dont really want to unless i have to since they are all very much attached to each other.