|Birdday Party 18-4|
|No. of Pigs||: x4 : x2|
|3-star Score||: 63,000 points|
|Birdday Party 18-3||Birdday Party 18-5|
Birdday Party 18-4 is the fourth level of Birdday Party.
Fire the Blue bird into the left tower, splitting to destroy the ice on both shelves. Launch the Orange bird into the bottom part of the middle structure, expanding at dead-center. The expansion should result in a massive amount of damage. If any pigs remain, use the Blue bird as necessary.