Link from a friend. I found it quite interesting........Tom Tom: Check out this LINK! I think you will be interested. Roy http://www.nytimes.com/2014/05/14/nyregion/researchers-hope-bird-friendly-glass-can-help-reduce-migration-deaths.html?emc=edit_th_20140514&nl=todaysheadlines&nlid=65106574&_r=0