This was understated but effective as birds constantly fly into my window. My only complaint was that this little thing was pretty pricey. But, I have had a lot of complements so I will keep this little cling.
Swallows on a wire and also the 6 Swallows were used on the door window of my new barn. It's a traditional house type door with a large window to let light in for my guineas, but I was afraid they might fly into the window thinking they could get out. They look wonderful and match the barn colorwise. It is a putty taupe color with an orangy-red roof and trim. They can see the clings and it worked great.
The bird strikes on our new 4x6 windows has been reduced drastically. Nice design and doesn't block our view.