Birdstrike Window Film: Do it for the birds! - Scottish Window Tinting
US Senate Seeks to Keep Birds Safe with Window Film
Frosted 45mm Squares Window Film - GlassTint Direct
Bird Strike Prevention Window Film for Your Chicago Home or Business - Window Film Chicago
Window Insulation Film, Thickened Aluminum Foil Door and Window Sealed Shading and Thermal Insulation Curtains Super Noise Reduction Windproof Window Sticker Open and Close at Will : Amazon.co.uk: DIY & Tools
Fritted glass, example
Frosted Glass Window Film Alternative to Frosted Glass