What bird is at our feeder? Is that a finch or a sparrow? Now, the answer is easy, if you have the Birds iView Window Cling decals on your viewing window. The back of each decal has bird's favorite food and feeder which will help you to attract new species. When a new bird arrives in your yard, place it's decal on your window. How many birds can you attract? Featuring 31 backyard Eastern birds.