Wind generators

Just found this link http://www.newscientist.com/article/dn14593?DCMP=ILC-tabComArt&nsref=dn14593 regarding bat fatalities.  I have read so many strange explanations for these incidents, including one that described "the bats wing had been chopped clean off" as though the turbine blades were made from kitchen knives, that I am sometimes left in disbelief.  Are these reports genuine or have they been made up by campaigners against wind farms? Any comments?