Washington State University has used drones to deter birds in trials. Hovering unmanned aerial systems or drones over fruit blocks such as this vineyard in 2018 near Prosser reduced visits from birds by a factor three to five.
Last night a Secret Service drone was seen flying over the Eisenhower Executive Office Building (EEOB) in Washington, DC. In a tweet, White House correspondent, Jim Acosta said that the Secret Service was operating a drone over the building. The unmanned aircraft was most likely used to provide an aerial view of the surroundings of the White House and the peaceful protests that were taking place there.