Angry Birds (game): What is all the stuff that you can buy in Angry Birds, and how does it work?
The only current “dlc” for angry birds is the mighty eagle, which is basically a cheat to help you finish any level. When the mighty eagle has been purchased, (for 1.29), you tap the menu button in a level, and all your birds will disappear, to be replaced by a bird treat. When you fire the treat, it will do no damage, but call down the mighty eagle like a thunderbolt. The mighty eagle is capable of destroying any terrain it touches, and the aftershock throws all pigs in the air, killing them, and thus beating the level. There is a destruction bonus for each level, which depends on how much terrain was destroyed. The last point is that the mighty eagle requires a 30 minute cooldown time before it can be re-used. I hope this answer has helped.