Radio tracking gives wildlife biologists important information on dispersal and movements of these magnificent animals. An attempt will be made in about a year to recapture the kittens once they are large enough to wear a radio collar.
Encounters with humans are rare. With history as a guide, residents and visitors have little to fear from mountain lions. The reverse may be true, as two lions have been killed by motor vehicles, and two were legally hunted outside the park boundaries.
As with any wildlife in the park, if you’re lucky enough to spot one, please keep your distance. If a lion approaches, make plenty of noise while facing the animal (don’t run away), throw sticks if you must, and be sure to inform the rangers at the earliest possible opportunity.
Read the NPS report on Grand Canyon’s mountain lion population and the research being done in the park. (Mountain Lion Research – PDF)