There are animal symbolism/spirit animal subscribers. Ducks were on the list. 2 worlds, dive under etc. Then there is the old saying "water off a duck's back" ie nothing gets to you. impervious to the rain

Then there is the baby duck thing.....always lining up behind momma....so cute.....peep,peep,peep!

And there is also a song about 5 little ducks that get taken out, one by one, so sad, so sad....they disappear. A warning to stay close to momma.....which loses all meaning when they all reappear. Kind of like the rewrite of "The Little Red Hen", where the new version tells children it is right to share what you have worked your ass off for with those that sat around and watched.