Preventing Bird–Window Collisions

• DOI: 10.1676/08-118.1
• Publication Date: 2011-03-11T14:39:06Z
• Authors: Daniel Klem Jr
• Keywords: Opacity; Frit

Birds behave as if clear and reflective glass plastic windows are invisible, annual avian mortality from collisions is estimated in the billions worldwide. Outdoor flight cage field experiments were used to evaluate different methods prevent between birds windows. Stripe grid patterns of UV-reflecting UV-absorbing window coverings presented an effective warning that avoid while offering little or no obstructed view for humans. UV-reflected signals space occupied by sheet plastic. Window with can unintentional killing One-way films made outer surface opaque translucent successful deterring bird strikes. Ceramic frit consisting a visual pattern densely spaced 0.32-cm diameter dots, 0.32 cm apart was collision deterrent. Uniformly covering decals other objects separated 5 10 completely near-completely preventing Twice number strikes occurred at non-reflective compared conventional panes. Continuous monitoring revealed one four left evidence after 24 hrs and, without continuous monitoring, 25% undetected.