A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
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A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
A landscape at Whiskeytown National Recreation Area 2 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.
While still over land, Biological Technician, Amelia DuVall prepares the computer for data collection at the beginning of an aerial photographic survey.
While still over land, Biological Technician, Amelia DuVall prepares the computer for data collection at the beginning of an aerial photographic survey.
Looking through the belly port of a small airplane before an aerial photographic survey starts, Fall 2018.
The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions.
Looking through the belly port of a small airplane before an aerial photographic survey starts, Fall 2018.
The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions.
![Woman kneeling in a clearing, holding a drone, man stands a few feet to her right holding a screen and drone piloting equipment.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20181009_143901.jpg?itok=8lfGDtMi)
USGS ecologist and drone pilot Chase Freeman and technician Kylie Mosher prepare for a drone flight at Whiskeytown National Recreation Area.
USGS ecologist and drone pilot Chase Freeman and technician Kylie Mosher prepare for a drone flight at Whiskeytown National Recreation Area.
![The backs of two scientists wearing USGS vests and hard hats, looking out at a drone in the sky, standing in a field, with a bur](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20181007_123127.jpg?itok=SwAfINjZ)
USGS ecologist and drone pilot Chase Freeman flies a drone for at Whiskeytown National Recreation Area to assess the impacts of the 2018 Carr Fire, while technician Kylie Mosher looks on.
USGS ecologist and drone pilot Chase Freeman flies a drone for at Whiskeytown National Recreation Area to assess the impacts of the 2018 Carr Fire, while technician Kylie Mosher looks on.
Whitebark pine cone on a seed trap
Whitebark pine cone on a seed trap
A Pallid bat (Antrozous pallidus) is outfitted with a radio transmitter to help lead us to its roost. The transmitter is attached with a temporary adhesive that will wear off within around 2 weeks, about as long as the battery life of the transmitter lasts.
A Pallid bat (Antrozous pallidus) is outfitted with a radio transmitter to help lead us to its roost. The transmitter is attached with a temporary adhesive that will wear off within around 2 weeks, about as long as the battery life of the transmitter lasts.
![Salt marsh harvest mouse](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Salt%20Marsh%20Harvest%20Mouse%20-%20Billy%20Thein.jpg?itok=ifEFRh6W)
A Federally endangered salt marsh harvest mouse (Reithrodontomys raviventris) climbs a branch.
A Federally endangered salt marsh harvest mouse (Reithrodontomys raviventris) climbs a branch.
An adult, female northern harrier (Circus cyaneus) flies overhead in Suisun Marsh, CA. Before habitat loss drove declines in the bird's populations, Suisun Marsh hosted the state's largest population of northern harriers.
An adult, female northern harrier (Circus cyaneus) flies overhead in Suisun Marsh, CA. Before habitat loss drove declines in the bird's populations, Suisun Marsh hosted the state's largest population of northern harriers.
Northern harrier (Circus cyaneus) nestlings in Suisun Marsh, CA. Northern harriers are considered a "species of concern" by the U.S. Fish and Wildlife Service, due to their declining populations.
Northern harrier (Circus cyaneus) nestlings in Suisun Marsh, CA. Northern harriers are considered a "species of concern" by the U.S. Fish and Wildlife Service, due to their declining populations.
An adult male Northern Harrier (Circus cyaneus) surveys Suisun Marsh, CA. Males are known for their beautiful, steel-gray plumage.
An adult male Northern Harrier (Circus cyaneus) surveys Suisun Marsh, CA. Males are known for their beautiful, steel-gray plumage.
These tree cores, taken from living trees with an increment borer, show the rings of the tree and allow scientists to learn about the tree's growth.
These tree cores, taken from living trees with an increment borer, show the rings of the tree and allow scientists to learn about the tree's growth.
A view through the belly port of a plane while cameras collect images during an aerial photographic survey.
The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions.
A view through the belly port of a plane while cameras collect images during an aerial photographic survey.
The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions.
USGS scientist Zach Wenderott extracts a tree core from a charred ponderosa pine in Lassen National Park as part of a study of how prescribed fire influences tree growth.
USGS scientist Zach Wenderott extracts a tree core from a charred ponderosa pine in Lassen National Park as part of a study of how prescribed fire influences tree growth.
Dr. Phillip van Mantgem extracts a core sample from a ponderosa pine (Pinus ponderosa) that has experienced
prescribed fire in Lassen National Park, CA.
Dr. Phillip van Mantgem extracts a core sample from a ponderosa pine (Pinus ponderosa) that has experienced
prescribed fire in Lassen National Park, CA.
Dr. Phillip van Mantgem cores a ponderosa pine (Pinus ponderosa) in Lassen National Park, CA.
Dr. Phillip van Mantgem cores a ponderosa pine (Pinus ponderosa) in Lassen National Park, CA.
Scientists use a tool called an increment borer to remove cyllindrical tree cores from living trees. The cores show the tree's rings and help scientists learn about its growth.
Scientists use a tool called an increment borer to remove cyllindrical tree cores from living trees. The cores show the tree's rings and help scientists learn about its growth.
A child peers at an unfertilized chicken egg at the USGS outreach booth, 2018 Suisun Marsh Field Day. USGS waterfowl ecologists use this method to check the development of a fetal duckling in the field.
*Note: photo taken with permission of parent.
A child peers at an unfertilized chicken egg at the USGS outreach booth, 2018 Suisun Marsh Field Day. USGS waterfowl ecologists use this method to check the development of a fetal duckling in the field.
*Note: photo taken with permission of parent.
USGS scientists attach small metal bands, each with its own ID, to the ankles of adult waterfowl to identify where the animal was caught. When it is re-captured later in its migration, researchers can use that information to determine how far the animal traveled.
USGS scientists attach small metal bands, each with its own ID, to the ankles of adult waterfowl to identify where the animal was caught. When it is re-captured later in its migration, researchers can use that information to determine how far the animal traveled.