The best strategy for Season’s Greedings level 1-7 is to lob a Black bird through the snow ceiling and onto the first hatted pig. The explosion should cause significant destruction, but a one-bird clear is actually not ideal. Launch the next Black bird flat, toward the back of the structure, and blow the last pig to kingdom-come. The score in the video is 75,270.
Note: The video below shows the Santa Hat glitch. This glitch has since been fixed and thus is no longer possible. The trigger was the Santa Hat atop the bottom-right pig. To see which levels have the glitch, we have tagged them.