«This new method to simultaneously screen many vampire
bat samples for both diet and population
structure is of value to future studies
on vampire
bat biology and for assessment of vampire
bat related pathogen transmission risks.
So are raptors, looking for easy food (dead or injured birds and
bats lying under wind turbines) or perching opportunities
on tall
structures, are also attracted by them: https://savetheeagles.wordpress.com/2013/05/28/raptors-attracted-to-windfarms-2/