Baby ducks, when they are born, take as their mother whoever they look closest to first. You wish you had known before, because now you have 3 "duck children" following you everywhere.

You didn't have the heart to leave them to their fate, because you never found the real mother of those ducklings.

Interestingly, now you and Mirio are "parents of ducklings". He took it with humor and enthusiasm, you don't know what to think about this.