Summer Pignic 1-17

It's the 17 level of Summer Pignic. Unlike other levels, this one is in space.

3-Star Strategy
First, use the Black Bird to hit the triangular stone block under the Moustache Pig, if possibly lucky, the 3 Helmet Pigs at the right might die due to the two attached stone blocks at the right of the Moustache Pig. It will also kill the Helmet Pig on the car, and obviously the Moustache Pig. Then, use the White Bird to kill the last Helmet Pig.