Hello, I recently hatched my very first egg. She’s an Ancona duck and now about 6 days old. The past few days she’s been sneezing a lot. No discharge from eyes or nostrils and her poop looks normal. Eating and drinking plenty and getting added niacin to food through Brewers yeast. She seems healthy and active otherwise. Always has access to fresh water that is deep enough for her entire bill and more. Is this something I should be concerned about? And if so, how should I treat/go about it?