@USGSCoopUnits

Fish and wildlife research on 43 university campuses in 41 states. Tweets do not equal endorsement. Follow us @usgscoopunits on Facebook and Instagram.

 United States
www1.usgs.gov/coopunits/
Joined November 2014
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  • Followers2.9K
625Media
Fish on! Understanding Recreational Fishers, brings together experts to show how people and the environment interact in recreational fishing—useful for the public, students, researchers, and educators designing courses on human dimensions of fisheries. link.springer.com/book/10.10…
Two people fishing on a sunny day.

ALT Two people fishing on a sunny day.

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Congrats Daniel Isermann, Wisconsin Fishery, inducted into the Fresh Water Fishing Hall of Fame Class for his contributions to the sport of freshwater fishing. Industry leaders meet annually to select nominees into this elite group of professionals! tinyurl.com/24kkdy4b
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Congrats to James Cain, New Mexico CRU, who has been recently named a fellow of The Wildlife Society. James has made research contributions to species such as desert bighorn sheep, mule deer, Mexican wolf, and other ungulates. Congrats James! 🏆 tinyurl.com/5n8j2s8x
James Cain poses with a tagged ungulate. James's research interests are primarily in wildlife-habitat relationships, population ecology, and the influence of management practices on native wildlife species.

ALT James Cain poses with a tagged ungulate. James's research interests are primarily in wildlife-habitat relationships, population ecology, and the influence of management practices on native wildlife species.

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Dr. Lowell E. Baier, 85, passed away peacefully on November 21, 2025. Lowell was a warrior & friend of the CRU Program. Lowell was an award-winning author, a champion of wildlife conservation, and natural resources management. Our deepest condolences. 💝 tinyurl.com/7mcyr2u6
Lowell Baier (left) and John Organ (right). Source: USGS

ALT Lowell Baier (left) and John Organ (right). Source: USGS

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The NY CRU and the NY Department of Environmental Conservation (DEC) are testing all-day spring turkey hunting in 31 Wildlife Management Units in NY. The study will measure hunter satisfaction, survival, and harvest to guide future DEC decisions. USGS pic tinyurl.com/5n7tntrx
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The South Dakota Unit is partnering with South Dakota Game, Fish and Parks and the Minnesota Department of Natural Resources to research lake sturgeon age, growth, maturity, and movement within Big Stone Lake in SD & MN. #LakeSturgeon tinyurl.com/46w593ch
Lake sturgeon, source: USFWS.

ALT Lake sturgeon, source: USFWS.

Researchers measure lake sturgeon in South Dakota.

ALT Researchers measure lake sturgeon in South Dakota.

Graduate student is working on a lake sturgeon project in South Dakota.

ALT Graduate student is working on a lake sturgeon project in South Dakota.

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The Idaho CRU is using trail cameras to evaluate relationships among black bear, bobcat, coyote, mountain lion, and gray wolf – and it’s not all about avoiding rivals! Some predators share space, likely due to shared food sources. tinyurl.com/56btx5kf
A curious bobcat.

ALT A curious bobcat.

On a trail in Northern Idaho, a bobcat lets out a big yawn.

ALT On a trail in Northern Idaho, a bobcat lets out a big yawn.

In Northern Idaho, a bear cub lounges atop a tree branch.

ALT In Northern Idaho, a bear cub lounges atop a tree branch.

Wolf pups.

ALT Wolf pups.

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Due to the federal government shutdown, this account is not being actively updated. For more information, please visit: doi.gov/shutdown
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USGS researchers at the Massachusetts CRU are leading research on river herring. Their role in the food web isn’t well understood. Our goal is to see how young river herring affect predators like white perch and yellow perch. #Estuaries tinyurl.com/bdy24ycd
Alewife, are several other fishes that as a group are commonly referred to as river herring; alewife, blueback herring, American shad, hickory shad and other migratory shad on the east coast. Alewives spawn in freshwater but spend most of their life at sea. They don’t jump like salmon, but they can swim very fast in short bursts to pass through rapids. In spring, they migrate from the ocean back to their home rivers to spawn. Text and image source: Ryan Hagerty, U.S. Fish and Wildlife Service

ALT Alewife, are several other fishes that as a group are commonly referred to as river herring; alewife, blueback herring, American shad, hickory shad and other migratory shad on the east coast. Alewives spawn in freshwater but spend most of their life at sea. They don’t jump like salmon, but they can swim very fast in short bursts to pass through rapids. In spring, they migrate from the ocean back to their home rivers to spawn. Text and image source: Ryan Hagerty, U.S. Fish and Wildlife Service

A school of river herring swimming. Image source: U.S. Fish and Wildlife Service.

ALT A school of river herring swimming. Image source: U.S. Fish and Wildlife Service.

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The Idaho CRU is working with Idaho Department of Fish and Game to better understand steelhead. Given its iconic status, it is no surprise that anglers get excited about these fish! Steelhead bring in hundreds of millions of dollars to Idaho communities. tinyurl.com/ywkr5f9u
Steelhead

ALT Steelhead

Steelhead

ALT Steelhead

Graduate student is holding a steelhead.

ALT Graduate student is holding a steelhead.

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The Louisiana CRU is working with the Louisiana Department of Wildlife and Fisheries to deliver information to decision-makers about gear selection and data interpretation for targeted studies and monitoring programs of Louisiana’s oysters. tinyurl.com/2456p999
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The Oregon CRU is leading efforts to understand critical ecosystems like the Nisqually River Delta in Washington. We used 6 years of data to model how weather and sea-level rise affect water temperatures—key info. for salmon that rely on cool water. tinyurl.com/2cnwsvdb
Washington. Image: Ryan Munes, U.S. Fish and Wildlife Service

ALT Washington. Image: Ryan Munes, U.S. Fish and Wildlife Service

Research vessel in Puget Sound, Washington.

ALT Research vessel in Puget Sound, Washington.

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The Arizona CRU is using GPS transmitters to track bald eagle migrations & highlight the importance of tracking all age groups for effective avian conservation efforts within the Pacific Flyway. Images: Koerner and Pearsall, U.S. Fish and Wildlife Service tinyurl.com/mr9hvcb6
A bald eagle in flight at Seedskadee National Wildlife Refuge. Photo By/Credit Tom Koerner/USFWS

ALT A bald eagle in flight at Seedskadee National Wildlife Refuge. Photo By/Credit Tom Koerner/USFWS

Bald eagle. Photo by/Credit: Peter Pearsall, USFWS

ALT Bald eagle. Photo by/Credit: Peter Pearsall, USFWS

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Job alert! The New Mexico Unit invites applications for a postdoc position to join a multi-agency partnership focused on recovery of the Rio Grande silvery minnow. Interviews begin in late September. tinyurl.com/yt2bfdsu Image: Rio Grande silvery minnow, Joel Lusk, USFWS
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The Vermont CRU released AMMonitor 2, a fully open-source wildlife monitoring R package useful for students and users with some coding experience who desire a standardized yet flexible data management framework. Images: USGS tinyurl.com/29wru66b
A trail camera records a bear standing in the woods with two cubs.

ALT A trail camera records a bear standing in the woods with two cubs.

A trail camera records a coyote in the snow covered woods.

ALT A trail camera records a coyote in the snow covered woods.

A trail camera catches a moose deep in the woods.

ALT A trail camera catches a moose deep in the woods.

AMMonitor 2 wheel

ALT AMMonitor 2 wheel

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The Michigan CRU found that the nine-banded armadillo has expanded its range to all of Missouri, southern Iowa, parts of Kansas & Illinois, northern & eastern Indiana, eastern Kentucky & Tennessee, South Carolina & Georgia, & western North Carolina. tinyurl.com/2ywcxr3c
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The New York CRU is using trail cameras to track bobcats, black bears & coyotes. They’re creating a database where users report wildlife sightings. This citizen science project helps gather important information about these species. tinyurl.com/3ntk7kdk
A bear was recorded by a motion-activated trail camera in a wooded area.

ALT A bear was recorded by a motion-activated trail camera in a wooded area.

A bobcat was recorded by a motion-activated trail camera in a wooded area.

ALT A bobcat was recorded by a motion-activated trail camera in a wooded area.

A coyote was recorded by a motion-activated trail camera in a wooded area.

ALT A coyote was recorded by a motion-activated trail camera in a wooded area.

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The Mississippi CRU is working with volunteer anglers to build a one-of-a-kind fisheries database. With more fishing apps available for smart phones and other devices, managers can involve many anglers in data collection. tinyurl.com/5z2jwu3m
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Our camera traps recently ‘sniffed’ out a white-backed hog-nosed skunk – the second-known sighting in Oklahoma since 1930! This finding is the first evidence of the skunk and is within the range of a poorly documented subspecies in decline. tinyurl.com/mrykfwzm
White-backed hog-nosed skunk is spotted on a trail camera.

ALT White-backed hog-nosed skunk is spotted on a trail camera.

White-backed hog-nosed skunk is spotted on a trail camera.

ALT White-backed hog-nosed skunk is spotted on a trail camera.

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Our Montana Fishery CRU is working with Yellowstone National Park to examine the impacts of invasive lake trout on the native Yellowstone cutthroat trout. People enjoy fishing for the species & the trout serve as a food source for grizzly bears & eagles. tinyurl.com/554uf2ar
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