The game has multiple powerful birds and items to help you with the levels: Red, Chuck, Bomb and Hammer. You can create the birds in the levels by making matches with 4-5 matchables, as well as purchase them from the pre-level screen to give you a head start for a level.
You can get a head start for a level by purchasing the bird boosters with gems from the pre-level screen. You can choose from Chuck and Red, Bomb and Red, or the whole trio.
From within the level you can purchase the Bomb and Hammer boosters, by dragging and dropping them from the bottom of the screen to the game area. The Hammer will make one damage to the item you drop it on. Using a Hammer does not use any moves.