Unmanned aerial vehicles (UAVs), more popularly known as drones, are increasingly employed to monitor and protect wildlife. But researchers say that steps should be taken to ensure that UAV operations are not causing undue stress to animals.

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Unmanned aerial vehicles (UAVs), more popularly known as drones, are increasingly employed to monitor and protect wildlife. But researchers say that steps should be taken to ensure that UAV operations are not causing undue stress to animals.