   We turn now to a controversy that has nothing to do with
social media. It concerns a federal government agency called
Wildlife Services, which works to remove wild animals from
places where they could come into conflict with humans.
Sometimes the agency uses lethal methods, including poison and
explosives. NPR's Brian Naylor explains.  BRIAN NAYLOR, BYLINE:
Wildlife Services is part of the U.S. Department of Agriculture
and has been around in some form since 1895. In a video on its
website, a Wildlife Services biologist demonstrates one of its
biggest jobs, chasing birds from airports, in this case, using
pyrotechnics - big bangs to scare them.   NAYLOR: USDA
administrator Kevin Shea says Wildlife Services' mandate is
pretty simple.  KEVIN SHEA: Our role is to help when people and
wildlife come into conflict and try to mitigate the damage,
while not endangering any species or the land.  NAYLOR: Those
conflicts between people and wildlife have become increasingly
common. Wildlife Services traps and kills in