They're not on any niacin or Brewers yeast. Their food has a niacin supplement in it, but if that isn't enough, where's the best place to get it? We didn't see any at Tractor Supply. Would extra niacin be too much for the chickens? Because they eat the same food. They're doing really good today, I let them out into the run to play. I just noticed that one of the boys keeps chasing after the girls and biting them, of coarse he has his favorite LOL.
Some ducklings seem to need more than others so we suggest they all have the extra. Chick starter grower doesn't have the amount ducklings need. so sprinkling a Tab of Brewers yeast over their feed wouldn't hurt them at all nor the chickens. I make fermented feed for my mixed flock of chickens ducks and geese and add Brewers yeast to it every time I make it up. I bought my Brewers yeast on line but GNC or other natural food stores will have it probably even Whole foods if you have one close call around first. Just don't get brewers yeast from spent beer making or baking yeast. Nutritional yeast is another good one.
As for the drake going after one of the girls just don't let him injure her.
Great news they are doing good