Hey there little one, let me explain what a honker union is in a way that you can understand!
A honker union is a group of people or animals (usually geese) that work together as a team. Just like you and your friends play together, geese also form a group, called a flock. And sometimes these flocks can be really big!
In a honker union, the geese work together to achieve common goals, like flying together, finding food or staying safe from predators. They communicate with each other using honks, just like you use words to talk to your friends.
So, just remember that a honker union is like a group of geese who stick together to accomplish things as a team by communicating and working together. Cool, right?