There are many different types of fiction genres, but they all have one thing in common: that the stories are made up.
If these ducks were in a mystery story, then there might be a crime for a detective to solve and a mystery to work out.
Or if the ducks were in a science-fiction story, it might take place in a futuristic world where everything is wildly different and fantastic.
Each genre has its own style and set of rules.
So whether it is a fairy story where the prince and princess live happily ever after or a scary story with frights and shocks, paying attention to genre is important when reading and understanding a story.