When a group of birds commits, focus on the fourth duck  coming into the hole. Once it's in range, the first two have likely landed, the third is back-flapping for the touchdown, and No. 4 is looking for an open spot with his wings spread. Shoot when he's 10 feet above the water. Miss, and you have a chance to hit him again. Connect with the first shot, and you're in position to take the birds springing off the water.