Or etch it into the glass itself.
An artist friend did that with her avian window imprints: remove the picture window; carefully acid-etch the imprint for posterity; remount the glass.
Pigeons are very stupid; they finally stopped attempting to fly through the glass after the 4th(!) etched imprint. You'd think they'd learn before then what those pale blotches signified.
( ,
Sat 23 Jun 2012, 22:05,
archived)
Pigeons are very stupid; they finally stopped attempting to fly through the glass after the 4th(!) etched imprint. You'd think they'd learn before then what those pale blotches signified.