Instructions
Hit the middle horizontal support beam with one of your birds. If you miss the first time, you still have two more birds to try with. Once you hit the beam, the green pig will fall, completing the level.
Bounce a bird off the dirt hill on the other side of the four green pigs on stands. The bird will hit the pig closest to it, which will set off a chain reaction, killing the other three pigs. You have four birds to try to do this with.
Run one of your birds into the round rock. This will set the rock in motion, killing the two pigs on the ground and completing the level.
Aim your first bird to hit the middle of the blue wall on the left-hand side of the structure. This will dislodge part of the blue roof, leaving it hanging on the left-hand side of the structure. Aim your second bird to hit this blue piece, killing the pig inside the structure and advancing you to level 5.