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Recent accomplishments of CDFW's scientific community


Counting Mountain Lions in California’s Back Country

scientist Justin Dellinger driving in mountain lion territory
CDFW wildlife biologist Justin Dellinger has a most unusual job -- since 2015, he’s been capturing and collaring mountain lions in California’s back country. Justin aims to achieve something unique, which is the first-of-its-kind comprehensive population assessment of California’s mountain lions.

Enumerating California’s Most Elusive Residents: Puma concolor

A gold-colored mountain lion snarls from its perch on a rocky hillside, under a clear blue sky
It’s just before dawn in the eastern Sierra Nevada Mountains in Mono County. It’s a cold clear morning, a good day to be out experiencing a still very much wild area of California. California Department of Fish and Wildlife (CDFW) biologist Justin Dellinger and a Wildlife Services houndsman are preparing gear to go out looking for fresh mountain lion tracks in this vast landscape.