Images

Amy Vandergast (left) and Julia Smith (right) pose next to a rail crossing sign in Ventura County.

Triple-high mist net in front of Half Dome. The net is used to capture bats as part of a study tracking bat movements in Yosemite National Park.

A California myotis with a transmitter, part of a study of bats in Yosemite National Park.

Ruby Lake National Wildlife Refuge lies at the southern end of Ruby Valley in northeast Nevada. For more information visit the Ruby Lake NWR website.

To adapt to rising sea levels, coastal wetlands can migrate landward at the expense of adjacent freshwater wetlands and upland ecosystems, but migration can be hindered by natural and anthropogenic barriers. This photo shows marsh migration constrained by topographic and urban barriers in southern California. 

Five tule white-fronted geese flying over Summer Lake Wildlife Area, the primary stopover site for this species on its fall migration.

Six tule white-fronted geese flying over Summer Lake Wildlife Area, the primary stopover site for this species on its fall migration.

Five tule white-fronted geese take off from Summer Lake Wildlife Area, the primary stopover site for this species on its fall migration.

Tule white-fronted geese get ready to land at Summer Lake Wildlife Area in Oregon. The geese turn upside down and sideways to drop altitude quickly to land, a behavior known as "whiffling" or "maple leafing."

Once thought to be extinct, the Pacific pocket mouse (Perognathus longimembris pacificus) was rediscovered in 1993 and is currently found at three population sites along the southern California coast.

Julia Smith holds a captive rail fitted with a transmitter "backpack" before release into Tijuana Estuary.

Close up of light-footed Ridgway's rail.

The light-footed Ridgway’s rail, a handsome but secretive waterbird that lives on tidal marshland fragments in southern California from Santa Barbara County south to Baja California, Mexico.

USGS is gathering and analyzing DNA from blood samples throughout the subspecies’ range to document the light-footed Ridgway’s rail’s genetic health.

A wild rail approaches a speaker playing mating calls at San Elijo lagoon. The light-footed Ridgway’s rail is a handsome but secretive waterbird that lives on tidal marshland fragments in southern California from Santa Barbara County south to Baja California, Mexico.

Zoomed image of small terns in flight.

Zoomed image of a Sperm Whale (Physeter macrocephalus) below the surface, with contrast increased for clarity.

Zoomed image of a Humpback Whale (Megaptera novaeangliae) and a group of shearwaters feeding in southern California.

Zoomed image of a Cuvier’s Beaked Whale (Ziphius cavirostris) below the surface.

Zoomed image of a Fin Whale (Balaenoptera physalus) breaking the surface.

Zoomed aerial image of a Black-footed Albatross (Phoebastria nigripes) taking off from the water.

Zoomed image of a group of adult and immature Western Gulls (Larus occidentalis).