Our “easier” strategy for Summer Pignic level 7 is to fire the first Yellow bird through the vertical wooden block on the left, but traveling downward so as to pop the pig at the bottom of the trough. Fire the White bird to bomb just before the middle structure, causing it to collapse inward. Use the next Yellow bird or two into the right tower to push it over and reach the pig at the bottom of the trough.
Easier Strategy, scoring 106,880.
Higher Score Strategy, scoring 119,830.