7-9 2 Birds
Aim first red bird at top of steps in front of subway. Hit either stone square, or perhaps better, wood square just below it.
Arc green bird around back of subway. Try to time boomerang to hit low on back wall taking out some of the lower wood squares to enhance score.
(I zoomed out and fired first two shots in quick succession, since this game just requires a lot of repetition until you hit it. Also zoom out avoids the frequent pig rolling wait time)
Some High Score Targets:
3 Stars: 130,000
*Top 150: 141,220
*Top 100: 142,300
*Top 10: 146,110
*Top scores in Massachusetts in March, 2011 according to Crystal (a former feature of the Mobile App).