Cosmic Crystals 7-28

Cosmic Crystals 7-28 is the twenty-eighth level in Cosmic Crystals.The objective of level 7-28 is to use the birds to eliminate all the pigs. Get at least 159,000 points for 3 stars.

Difficulty

 * This level used to bugged, the T bar is unstable and wreck the fortresses on the largest planet. Makes this level impossible to get 3 stars.
 * Three stars is very high, but it's not much problem for this level.

Strategy
Send Terence directly into the northwest planet. Aim the Black bird for the gem in the extreme northeast of the level, catching the slope and settling below the stone piles. The explosion should send debris hurdling across the planet.