Drones unleashed against invasive rats in the Galápagos; Nature, January 24, 2019

Emma Marris, Nature; Drones unleashed against invasive rats in the Galápagos

"One advantage of using drones, Morley says, is that it reduces the need to cut trails through a forest to lay poison baits or traps. He is still working on ways to use the drones to monitor whether projects are successful, playing with acoustic, optical or other sensors that the drones could drop near the poison.

Using drones to kill could also change how conservation scientists view such work, Morley says, comparing the approach to modern warfare. “You used to be able to see your opponent. Now, you just a press a button and you fire a missile,” he says. “You become a little bit detached from the reality that you have killed something or somebody over there.”

That emotional distance could be seen as a benefit of the technology, or as a problem, says Chelsea Batavia, a scholar of conservation ethics at Oregon State University in Corvallis. She feels that people who kill animals for conservation should allow themselves to feel the moral weight of their actions, and even grieve. “Have a conversation about what you are doing and talk through that as a group,” she advises. “Let the impact of what you are doing hit you.”"