You starred with the words you don't believe there's much story/ moral behind this pixar short movie.
If it comes to modern fables, ths is one of them, I prefer too the reader/watcher decides what it is.

In modern world it's keyboard warriors bullying and I doubt they feel ashamed because of being exposed. Those little creatures are birds of a feather and keep sticking together no matter what.
I know what their leader will say: that big bird is a dumb idiot let's get him!

🍀❤️