You can level up, evolve and sell birds in the game by entering the ‘Bird Team’. In the main screen you can drag and drop any bird from your inventory to the right to create your core team. Please note that you can access their individual level-up screen by tapping on any bird portrait in both inventory and the core team. On a birds level up screen, you can sell individual bird, upgrade their super shot skills, assign runes and level the birds. 

Leveling up your birds: Levelling up birds is quite simple. Once you decide to upgrade a bird you need developed, please tap the birds portrait and then ‘Level Up’ button. Once this is done you’ll be taken to an interface. This is where you can assign Anger and Rage totems by tapping the plus icon above their icons, by doing so you will manually adjust the quantity that will be used for levelling up.

Alternate way to level up your birds: In case where you suddenly find there are no Anger or Rage totems available in your inventory, you can fuse multiple birds together. Note that you can see all the birds selected for the fusion as well as totems that will be used. Total cost of the upgrade as well as the increase of the birds power are displayed on the right rectangle under the bird being leveled up. As soon as you are satisfied with the resources allocated toward upgrading a bird and confirmed that everything is as it should be, tap on the ‘Level Up’ button in order to make the bird stronger.

Birds prestige level remains unaffected by this action, however a five star birds prestige can be upgraded by using prestige totems.