Photo of the day #443: The Grinnell Resurvey Project

 Jim Patton, emeritus professor and curator of mammalogy with The Museum of Vertebrate Zoology at UC Berkeley, left, and his wife Carol Patton check traps left overnight as part of The Grinnell Resurvey Project in Death Valley National Park, Calif., Sept. 26, 2017. The Grinnell Resurvey Project revisits the sites originally surveyed by Joseph Grinnell more than a century ago to inventory terrestrial vertebrates.

Jim Patton, emeritus professor and curator of mammalogy with The Museum of Vertebrate Zoology at UC Berkeley, left, and his wife Carol Patton check traps left overnight as part of The Grinnell Resurvey Project in Death Valley National Park, Calif., Sept. 26, 2017. The Grinnell Resurvey Project revisits the sites originally surveyed by Joseph Grinnell more than a century ago to inventory terrestrial vertebrates.