USGS and Nez Perce Tribe biologists use drones to count fall Chinook salmon nests on the lower Salmon River, supporting assessment of this threatened population.

Aerial footage of feral horses moving through trees on Oregon's Warm Springs Reservation, captured during a USGS-tribal population estimation effort.

Collar-camera footage of a Porcupine herd caribou seeking relief from biting insects in a coastal Yukon habitat.