Save birds from window collisions with these gorgeous Feather Window Gems®. They break up reflections on the glass and warn birds away in time to avoid window strikes. The decals stick to the window purely with static cling, not adhesives, so they are movable, reusable and never fade. Comes in a package of 9 different feathers ranging in size from 4.5" to 9" long. Window Gems are made with a prismatic vinyl which captures sunlight and turns it into rainbows all over your house. They are stunning, constantly changing, and perhaps a teeny bit magical. Any light source makes the gems glow with rainbows, even moonlight. Handmade in Mount Shasta, California