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The first update, released in February 2010, added a new episode called "Mighty Hoax", containing two new themes with 21 levels each. Updates released in April 2010 added the "Golden Eggs" feature, which placed hidden golden eggs throughout the game that would unlock bonus content when found, and a new episode called "Danger Above", which initially contained a single theme of 15 levels. Two later updates added two more themes to "Danger Above", each with 15 levels. "The Big Setup" episode, containing two new themes, 15 new levels and additional Golden Egg levels, was added in June 2010.^[10] "The Big Setup" was later given two more themes of 15 levels each.

A fifth episode, called "Ham 'Em High," launched in December 2010, in celebration for the game's first year in the Apple Store.^[11][12] "Ham 'Em High" contains 15 levels in a single theme, and a new bird, called the Mighty Eagle, which can be used to clear any level.^[13] The Mighty Eagle is offered as a one-time, in-game purchase,^[12] and is limited to one use per hour on uncompleted levels. Once a level is completed using only standard birds, this limitation is removed. The Mighty Eagle can then be used in previously completed levels to play a mini-game called "Total Destruction" in which the player attempts to destroy as much of the scenery as possible, both with the standard birds and the Mighty Eagle; achieving 100% destruction earns the player a Mighty Eagle feather for the level.