Scoring points is what earns bonus cards and wins most challenges. You score points by taking out pigs and destroying their structures with the fewest birds possible.
There are three additional ways to boost your score. First, collect feathers and rank up your birds. Second, collect hats, or buy them with black pearls. Birds wearing hats enjoy a score multiplier. Finally, collecting complete sets of hats unlocks slingshotswith score multipliers. The more sets of hats you collect, the greater the multiplier for your slingshot. Spells rank up based on the levels of your birds and slingshot.