Level 1-1
The theme's first level features a giant pig in a leprechaun hat sitting on a wooden bridge suspended between two cement bases, with each base protecting more pigs. You'll have two yellow birds and two black bomb birds to eliminate all the pigs. With your first shot, aim the yellow bird at the horizontal plank supporting the wooden bridge and accelerate just before contact. The entire bridge, big pig included, should crumble. Now launch a bomb bird into the middle of the far cement base to take out three more pigs. Your second bomb bird can make short work of the near cement base to eliminate the final two pigs and clear the level with three stars.
Level 1-4
This level features a large wooden dome structure between two wooden towers. You'll have a yellow bird, a white egg-dropping bird and two regular red birds to eliminate six pigs. Fire your initial yellow bird in an arcing trajectory to reach the far wooden tower and accelerate to take out both of the tower's pigs. Now pop the egg-dropping bird over the first tower and tap the screen to drop its egg on the wooden dome's front support leg. The explosion should take out at least three of the remaining four pigs. Use the final two red birds to pick off any survivors.
Level 1-8
Seven pigs take refuge inside a rickety wooden structure anchored to a cliff. The cliff also features a tunnel carved into the rock, with one end opening high above the structure and the other end opening down low at its base. Shoot your first red bird into the top of the tunnel, which will cause the bird to roll through and come out the other side, colliding with a box of dynamite and inflicting serious damage. With your second shot, send a yellow bird speeding into the base of the structure's front supports. Most, if not all, of the pigs should perish in the subsequent collapse. Use your final two birds, an egg-dropper and a regular red, to mop up any survivors.
Level 1-10
In Level 1-10, you'll have a little blue bird, two yellow birds, an egg-dropping bird and a regular red bird to beat seven pigs positioned atop two wooden cars and a small wagon. Aim the little blue bird at the wagon that sits between the two cars, tapping the screen before contact to split the blue bird into three and take out one pig and some leprechaun decorations. Fire your next yellow bird so it accelerates through the near wheel of the far wooden car, causing the car to split in half and to squash three more pigs. Use your next yellow bird to eliminate the last remaining pig in the far car. Now your egg-dropper can blow up the two pigs in the near car, clearing the board with one bird to spare and earning three stars for your effort.