The Eggs

The Eggs are the birds' most desperate items they want in the game. The pigs, who keep stealing the eggs, want to eat them. The birds keep having to get the eggs back from the pigs. For every episode, there are three eggs other than Season's Greedings and Go Green, Get Lucky, which have one, Hogs and Kisses, 2.

Trivia

 * Eggs are the only indestructible object in the entire game (excluding walls and rubber).
 * However, Mighty can destroy eggs.
 * The Eggs have never hatched, however, it is likely that the pigs stole different eggs each time.
 * There are only three eggs, but in some other media, there are more than three eggs.
 * Some pages in Bad Piggies' Egg Recipes show the Pigs finish cooking the eggs. However, this has yet to happen in the games.
 * The Space Egg (right) is now a playable character in Angry Birds Space.   Egg.png
 * In the King Pig game mode from the iPad version, the Pigs that you usually attack are replaced with Eggs, having the existence of the Helmet Egg, the Moustache Egg, and the King Egg.
 * In Angry Birds Star Wars, the Egg portrays the droid R2-D2.
 * There are three known unplayable Eggs:
 * The three eggs that were stolen by the pigs repeatedly. (Appear in animations and cutscenes.)
 * Boy and Girl Eggs from Hogs and Kisses.
 * Umbrella Egg from Cherry Blossom.
 * The Eggs are shown in level 3-21.