Little spot on my duckling's underside

[JoshT]

I’m new to ducks and just got these little girls and noticed one of them had this hole with some yellow string like stuff around the hole if anyone knows please help.

 

[nuthatched]

Sounds like a navel, leave it alone.

 

[Chicken_tiger_catt]

I’m new to ducks and just got these little girls and noticed one of them had this hole with some yellow string like stuff around the hole if anyone knows please help.

That is the belly button. Please don’t mess with it, it should heal on its own.

 

[JoshT]

Awesome thank you guys for the help