Angry Zombie Birds Subvert Your Imagination

Angry Birds is a puzzle video game developed by Finland-based Rovio Mobile, in which players use a slingshot to launch birds at pigs stationed on or within various structures, with the intent of destroying all the pigs on the playfield. (wikipedia)

In the eyes of players, the animals in "Angry Birds" are lovely. However, a Polish illustrator Tomasz Kaczkowski completely subverted the image of them. If the angry birds were zombies, dare the green pigs to steal their eggs as well?