A good strategy for Season’s Greedings level 1-18 is to lob the first Black bird through the snow blocks between the wooden and stone structures. This is a challenging shot, but can clear ten pigs if done properly. Arc the next Black bird through the remaining pig in the top-right to finish the level. To earn some extra points, try to have the second Black bird reach the present on the far-right. The score in the video is 95,350.
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 large pig next to the present. To see which levels have the glitch, we have tagged them.