The U.S. National Park Service says drones are not welcome . Sierra National , in California , said they 're being used to shoot deer . The Code of Federal Regulations states that `` delivering or retrieving a person or object by parachute , helicopter , or other airborne means , except in emergencies involving public safety or serious property loss , or pursuant to the terms and conditions of a permit '' is illegal . Drones make noise and can harm delicate wildlife , parks say . YouTube shows a host of live videos from Yosemite .
The U.S. National Park Service says drones are not welcome . Sierra National , in California , said they 're being used to shoot deer . Drones make noise and can harm delicate wildlife , parks say . YouTube shows a host of live videos from Yosemite .