Hey so i hatched out 2 ducklings 2 days ago at around 12pm and they seemed fine and healthy. they started to eat and drink around 3h after they hatched, in the evening they were eating and drinking like normal but today one of them isn't eating, it only had a few starter crumbs but it's still drinking alot like normal. I put yeast pouder in their water just so it's getting some goodness but I'm worried about the little guy. it seems less active and more tired while the other one is full of energy like they were yesterday. please help