Photos: A week in the life of the Griffith Park mountain lion

Wildlife ecologist Seth Riley, right, and Jeff Sikich, a biologist for the National Park Service, walk through a tunnel used by P-22 as the mountain lion makes his way around the north end of Griffith Park and neighboring properties. The pair use maps and data from a radio collar worn by P-22 to observe his travels.

While tracking P-22, wildlife ecologist Seth Riley, right, and Jeff Sikich, a National Park Service biologist, climb the rocky hillside of Griffith Park after examining the remains of a deer likely killed by Griffith Park’s P-22 mountain lion.

Seth Riley, left, and Jeff Sikich stand atop a trail on the north end of Griffith Park overlooking the 134 Freeway and Burbank as they use maps and data from a radio collar worn by P-22 to observe the travels of Griffith Park’s mountain lion.

Wildlife ecologist Seth Riley, left, and Jeff Sikich, a biologist with the National Park Service, examine the remains of a small deer likely killed and eaten by Griffith Park’s P-22 mountain lion. The pair located the remains using data collected from the radio collar worn by P-22.

Hikers frequent the trails in Griffith Park where biologists with the National Park Service use maps and data from a radio collar worn by P-22 to observe the travels of the Griffith Park mountain lion.

Deer graze at the Hollywood Reservoir among areas frequented by Griffith Park’s P-22 mountain lion. The animals are a favorite food source for P-22.

National Park Service biologist Jeff Sikich, center, talks with hikers Charles Haid, right, and Rene Auberjonois on a trail overlooking Universal Studios and Warner Bros. Studios, where they say they have observed a mountain lion. Sikich uses maps and data from a radio collar worn by P-22 to observe the travels of Griffith Park’s mountain lion.