Window collisions are one of the top reasons for birds being admitted to Le Nichoir.
Made by WindowAlert these decals can dramatically reduce window collisions. The decals reflect ultraviolet light which is invisible to humans. Installed on the OUTSIDE of a window the decals appear to humans as frosted or etched glass but to the birds they are highly visible and break confusing reflections that cause collisions.
To be effective, at least one decal per square metre of glass should be used, as the manufacturer recommends. The decals use static cling and so are easy to install and remove.
These decals are a very simple and inexpensive gesture to reduce often fatal window collisions. 4 Decals per pack