The Eggs

The Eggs are the bird's most desperate items they want in the game like Theme 1-8 's 'boulder". This is why the birds are angry because of the pigs who stole them. 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 indestructable object in the entire game (excluding walls and Rubber).
 * However, the Mighty Eagle 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.