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Western bumble bee on a sticky purple geranium flower
Western bumble bee on a sticky purple geranium flower
Western bumble bee on a sticky purple geranium flower
Western bumble bee on a sticky purple geranium flower

Western bumble bee on a Geranium viscossium (sticky purple geranium) flower in Glacier National Park, Montana. Photo taken by USGS field crew in July 2023.

Western bumblebee on a yarrow flower
Western bumblebee on a common yarrow flower
Western bumblebee on a common yarrow flower
Western bumblebee on a common yarrow flower

Western bumblebee on a Geranium viscosissimum (sticky purple geranium) flower in Glacier National Park, Montana. 

Western bumble bee on a common yarrow flower
Western bumble bee on a common yarrow flower
Western bumble bee on a common yarrow flower
Western bumble bee on a common yarrow flower

Western bumble bee on a common yarrow flower in Glacier National Park, Montana. Photo taken by USGS field crew in July 2023. 

1990 and 2022 map showing occupied range of grizzly bears in the Greater Yellowstone Ecosystem
Occupied range of grizzly bears in the Greater Yellowstone Ecosystem: 1990 vs. 2022
Occupied range of grizzly bears in the Greater Yellowstone Ecosystem: 1990 vs. 2022
Occupied range of grizzly bears in the Greater Yellowstone Ecosystem: 1990 vs. 2022

The grizzly bear distribution represents the estimated geographic extent of occupied range of the Yellowstone grizzly bear population. The images show a comparison of their estimated geographic extent, with a 3-fold increase from 1990 (23,361 kmor 9,020 mi2) to 2022 (70,101 kmor 27,066 mi2).

The grizzly bear distribution represents the estimated geographic extent of occupied range of the Yellowstone grizzly bear population. The images show a comparison of their estimated geographic extent, with a 3-fold increase from 1990 (23,361 kmor 9,020 mi2) to 2022 (70,101 kmor 27,066 mi2).

Drone hovering over flight operator
Researcher collecting data with unmanned aerial vehicle (drone)
Researcher collecting data with unmanned aerial vehicle (drone)
Researcher collecting data with unmanned aerial vehicle (drone)

USGS researchers acquire imagery from unmanned aerial vehicles (drones) synchronous with high-resolution imagery from satellites to map sagebrush across North Dakota and South Dakota. 

Shallow creek with vegetation at its banks
Montana creek were eDNA autosampler was deployed
Montana creek were eDNA autosampler was deployed
Montana creek were eDNA autosampler was deployed

Cherry Creek, Montana—a location where an environmental DNA (eDNA) autosampler was placed to detect invasive species. 

Researcher examining snow sample while standing in a snowpit
USGS researcher collecting data on a snow sample
USGS researcher collecting data on a snow sample
USGS researcher collecting data on a snow sample

Northern Rocky Mountain Science Center scientist examining a snow sample while standing in a snow pit to better understand snowpack characteristics that lead to avalanches. 

Northern Rocky Mountain Science Center scientist examining a snow sample while standing in a snow pit to better understand snowpack characteristics that lead to avalanches. 

Helicopter landed on the snow in a prairie
Helicopter used to assist in wildlife research
Helicopter used to assist in wildlife research
Helicopter used to assist in wildlife research

Helicopter used to assist in mule deer capture to fit animals with GPS collars in Wind River Basin, Wyoming. 

South Cascade Glacier
South Cascade Glacier, Washington
South Cascade Glacier, Washington
South Cascade Glacier, Washington

The surface of South Cascade Glacier, Washington is mostly exposed ice at the end of summer melt season. 

The surface of South Cascade Glacier, Washington is mostly exposed ice at the end of summer melt season. 

USGS scientist examines a snow core
USGS scientist examines a snow core
USGS scientist examines a snow core
USGS scientist examines a snow core

USGS scientist examines a snow core collected on South Cascade Glacier, Washington.

Environmental DNA sampler in workshop
Environmental DNA sampler in workshop
Environmental DNA sampler in workshop
Environmental DNA sampler in workshop

An inside look at an MBARI autonomous environmental DNA (eDNA) sampler that is normally in metal housing taking samples in streams to detect aquatic invasive species, pathogens, and parasites. This version weighs about 400 pounds, but future versions will be more portable.  

An inside look at an MBARI autonomous environmental DNA (eDNA) sampler that is normally in metal housing taking samples in streams to detect aquatic invasive species, pathogens, and parasites. This version weighs about 400 pounds, but future versions will be more portable.  

Passive acoustic bat recording device deployed on a boulder in Montana.
Bat passive acoustic recording device
Bat passive acoustic recording device
Bat passive acoustic recording device

This passive acoustic recording device has been deployed in Montana (MT) as part of the North American Bat Monitoring Programs (NABat) summertime survey efforts. It has an ultrasonic microphone placed at the top of a 10ft pole that records echolocating bats fro

This passive acoustic recording device has been deployed in Montana (MT) as part of the North American Bat Monitoring Programs (NABat) summertime survey efforts. It has an ultrasonic microphone placed at the top of a 10ft pole that records echolocating bats fro

A group of people on a canoe on a river with fishing poles
Montana trout fishing
Montana trout fishing
Montana trout fishing

Boaters fly fishing on the Missouri River in Montana                                                                                       

Boaters fly fishing on the Missouri River in Montana                                                                                       

Wind turbines with blue sky in background
Wind turbines in Wyoming
Wind turbines in Wyoming
Wind turbines in Wyoming

A group of wind turbines in northeast Wyoming on a cloudy day. (Photo taken in May 2022.)

A group of wind turbines in northeast Wyoming on a cloudy day. (Photo taken in May 2022.)

Mountain goat standing next to frozen lake
Mountain goat in Glacier National park
Mountain goat in Glacier National park
Mountain goat in Glacier National park

Mountain goat standing next to a mostly frozen, high-elevation lake in Glacier National Park, Montana. 

Male and female bighorn sheep
Male and female bighorn sheep
Male and female bighorn sheep
Male and female bighorn sheep

Male (ram - left) and female (ewe) bighorn sheep outside of Yellowstone National Park. 

Male bighorn sheep
Male bighorn sheep
Male bighorn sheep
Male bighorn sheep

This image shows a male bighorn sheep with large horns.                         

This image shows a male bighorn sheep with large horns.                         

Grizzly bear range expansion in GYE (1990-2022)
Animated image showing grizzly bear range expansion in GYE: 1990-2022 (read description below and click green "original" button)
Animated image showing grizzly bear range expansion in GYE: 1990-2022 (read description below and click green "original" button)
Animated image showing grizzly bear range expansion in GYE: 1990-2022 (read description below and click green "original" button)

Sequential estimates of occupied ranges for grizzly bears in the Greater Yellowstone Ecosystem during 1990–2022 (Dellinger et al. 2023). Range extents are based on methods described in Bjornlie et al. (2014).

Researcher on a snowy, mountainous slope next to a weather station with rocky peaks in the background
Garden Wall Weather Station maintenance at Glacier National Park
Garden Wall Weather Station maintenance at Glacier National Park
Garden Wall Weather Station maintenance at Glacier National Park

Northern Rocky Mountain Science Center scientist Zachary Miller conducting routine maintenance on the Garden Wall Weather Station at Glacier National Park, Montana (elevation: 7,400 feet)

Northern Rocky Mountain Science Center scientist Zachary Miller conducting routine maintenance on the Garden Wall Weather Station at Glacier National Park, Montana (elevation: 7,400 feet)

Salt lick (right) and device to exclude wildlife from access to minerals (left)
Salt lick and device to exclude wildlife from access to minerals
Salt lick and device to exclude wildlife from access to minerals
Salt lick and device to exclude wildlife from access to minerals

Orange and black excluder device (left) will contain minerals, but intended to allow livestock access while excluding wildlife. Mineral block to the right of excluder device.

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