Light green pigs night raided the settlement of evil birds and tried to get into the house to steal the small nestlings. But birds are not very simpletons and at night every night left guard at the door of the house. The guards in advance counted attack enemies and prepared for them iron trap. Now, the evil birds have the opportunity to execute their enemies and with them you also receive the chance. Charge the slingshot birds, pull the string and try to destroy the cells with the pigs for a few shots.
Source
game-game.com