Birdday Party

 is the seventh Angry Birds episode. It celebrates the 2 years anniversary of Angry Birds.

Rovio first introduced the episode on their blog. It has 15 levels, and all levels will be unlocked. Many book and toy stores across the world will be celebrating.

Trivia

 * Fans in the US can celebrate by heading over to their local Barnes & Noble, which will have special events and giveaways from 11 AM to 3 PM. Angry Birds aficionados can join a scavenger hunt to find the Mighty Eagle or enter a raffle to win special Angry Birds prizes.
 * Toys ‘R’ Us is also getting into the “birthday” spirit. Fans can get 25% off Angry Birds plush toys plus a code that unlocks an Angry Birds Google Chrome bonus level.
 * For Angry Birds fans in Japan, Rovio CMO and Mighty Eagle Peter Vesterbacka will be giving a special presentation at the Apple store in Ginza.
 * The Forbidden Planet stores in the UK will also be celebrating Angry Birds’ second birthday with merchandise previously unavailable in the UK.
 * This is the first Angry Birds episode that involves an anniversary.
 * This episode has the fewest amount of levels, with only 15.
 * The title is a reference to the saying "Happy Birthday".
 * The preview picture suggests the Orange Bird may possibly appear in this episode. This would be the first time the bird would appear in the original Angry Birds game.