Bird-Friendly Building Design Bird-Friendly ... - Lights Out Indy

argument that patterns applied to the outer surfaceof glass are more effective than patterns applied tothe inner surface.The majority of the work described here uses protocolsthat approximate a situation with free-standingglass – birds can see through glass to the environmenton the other side, patterns tested are betweenthe bird and the glass and patterns are primarilyback-lit. While this is useful and relevant, it does notadequately model most glass installed in buildings.In that situation, light levels behind the glass areusually substantially lower than light falling on theoutside surface. New protocols have been developedto test materials whose effectiveness dependson the glass being primarily front-lit. This includesUV patterns and frit patterns on the inside surfacesof insulated glass.Ornilux Mikado’s pattern reflects UV wavelengths. The spiderweb effect isonly visible from very limited viewing angles. Photo courtesy of Arnold GlassAll-over patterns such as the one shown above are less effective atdeterring collisions. Patterns with more contrast and distinct spaces, suchas the one shown on the left, are much more effective. Photo: ChristineSheppard, ABCA panel of fritted glass, ready for testing. Photo: Christine Sheppard, ABCThis glass facade, of a modern addition to the Reitberg Museum in Zürich, Germany, wasdesigned by Grazioli and Krischanitz. It features a surface pattern formed of green enameltriangles, beautiful and also bird-friendly. Photo: Hans SchmidtBird-Friendly Building Design43