Mutation Station

The Mutation Station is a device that is used to fuse birds or change their abilities. It is in Angry Birds: Return to Tomorrow

How to work it
All you do is spin wheels from quests to get tokens: Fuse, speed, weight, damage, health, and ability. Speed, weight, health, and damage are all self-explanatory: You use those tokens at the Mutation Station to improve your birds' abilities. You can minus stat points in any of these categories, and get them back to use on another bird if you wish. Fuse tokens can be used on a bird, and they will be marked with "Ready to fuse." Do it to another, the same thing will happen. You can click fuse on one of the birds, then select another, and they will fuse. You can always click unfuse if you don't like the fusion

Unlocking
To unlock it, pass level 12 of Plundering Piggies, then Mighty Eagle will tell you that the DNA icon will lead you there, and use it to mutate as much as you want! You get 5 of each kind of token, and now you're ready!