6-15 5 Birds
Arc first red bird to hit sand under monkey on top platform.
Arc second blue bird and split to take out any ice above first tower and possibly destabilize second tower.
Arc third yellow bird and accelerate to release beach balls onto floor of second half of game. (This is important so that dog will chase after balls and destabilize third tower)
Depending on what is left, use the next two birds to clear out any remaining debris.
2 Stars: 142,000
3 Stars: 149,000