Most bird deaths occur between ground level to 40 feet which the American Bird Conservancy calls the primary bird collision zone.
http://www.normantranscript.com/news/government/citizen-scientist-tracks-bird-window-collision-fatalities/article_68a473f9-a146-5af9-9c61-887f0d15ba5a.html
Posted on
May 29, 2017 11:35 AM
by
biohexx1
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