My two 2-week old ducklings are both laying down almost all the time and when they do stand up they are wobbly. I've been putting 100 mg niacin capsules in their water since they hatched, 1or 2 per gallon, 2 or 3 when a lot was being spilled. Yesterday and today I gave them each 1 ml of B-complex because of their issues standing, but today it's worse if anything. Could it be too much niacin rather than not enough? They are Anconas.