Please help! I have a cayuga duckling that's almost 48 hours old hatched completely on its own, still has yolk sac....it was the last egg to hatch, the other ducklings are in the coop with mom. I put the duckling in the coop for a couple hours with mom and siblings today only because it was so alone, it's eating, drinking, swimming, and walking perfectly fine (it's a little slower than the other ducklings only because of a 2 almost 3 day age difference) the duckling did fine with the others accept when I checked its yolk sac it didn't seem to shrink at all and was dirty, brought the little one in and cleaned it up really good, it's in the brooder now, but I'm not sure what to do about the yolk sac I'm terrified of infection, but also nervous to mess with it or try to remove it. Any ideas on what to do? I thought about antibiotic ointment (pain releaver free) but figured I would wait and ask you guys.