Wormholes

Wormholes are an object and plot device that first appear in Angry Birds Space. They serve as the character's main mode of transportation, and are used to travel in between chapters of the game. They make no outside appearances in the Angry Birds universe.

They were added in Angry Birds 2 in the NASA update, they make objects and living beings disappear, after they spin around them for a short period of time.

Appearance
Wormholes are colored brightly purple and black, with a glow of light at the center. They are circle shaped, and appear to spiral towards the center.

Plot
The first wormhole seen is what initiates the events of Angry Birds Space. Ice Bird uses a wormhole to crash land onto Piggy Island along with his eggsteroid, only for a claw of King Pig's ship to shoot out, grab the eggsteroid along with the flock's eggs and fly back into space. This causes Ice Bird and the rest of the flock to fly into the eggsteroid.

The flock makes their transformations inside of the wormhole. Red transforms into the Super Red Bird, the Blues into the Lightning Birds, Chuck into Laser Bird, Bomb into Firebomb Bird, and Terence into Incredible Terence. Afterwards, the wormhole takes them into the planet of Pig Bang.

Following these events, the wormholes are used to travel to each chapter of the game. They also appear when the player lands on one of the eggsteroids. In this case, a wormhole will open up mid-level and whisk the player and the birds to whichever eggsteroid level was unlocked.

Later on, the wormhole attracts the attention of Bubbles, who uses the wormhole to travel to Utopia and in the process, becomes the Atomic Bird.

Gameplay
Wormholes appear oftenly during cutscenes, where they are shown to be used to travel to different locations. There are also two occasions where they appear during gameplay. One is when the Space Eagle power-up is used; a wormhole will appear when the sardine tin is activated and the Space Eagle will fly through, causing mass destruction.

A second case is when the player finds an eggsteroid. Once a bird is used to hit it, a wormhole will appear in its place and take the player to the eggsetoid level.

Trivia

 * Wormholes soley appear in Angry Birds Space, and make no outside appearances.
 * Wormholes can provide birds with new costumes and abilities. The only other entity known to do this is the Mighty Eagle.