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National News Release
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Intersex Prevalent in Black Bass Inhabiting National Wildlife Refuges in Northeast

Center News
Canada Goose on the Colville River Delta

Esophageal-proventricular Aspergillosis in a Canada Goose (Branta canadensis) from Wisconsin, USA

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Conditioning of sandhill cranes during fall migration

Photography
A brown sea otter sleeping on its back in blue/green water.

Sleeping sea otter
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Polygyny in a wild wolf pack

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Sexual selection and mating chronology of Lesser Prairie-Chickens

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Coelomic implantation of satellite transmitters in the bar-tailed godwit (Limosa lapponica) and the bristle-thighed curlew (Numenius tahitiensis) using propofol, bupivacaine, and lidocaine

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Liquid chromatographic method for determining the concentration of bisazir in water

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Aggression and coexistence in female caribou

B-roll

Polar Bear Research, B-Roll 1
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Breeding chorus indices are weakly related to estimated abundance of boreal chorus frogs

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Case report: Isolation of streptococcus zooepidemicus from a bald eagle (Haliaeetus leucocephalus)

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Detection probability and occupancy of American woodcock during Singing-ground surveys

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Mercury elimination rates for adult northern pike Esox lucius: evidence for a sex effect

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Characterization and application of a quantitative DNA marker that discriminates sex in chinook salmon (Oncorhynchus tshawytscha)

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Energy budget and prey requirements of breeding lapland longspurs Calcarius lapponicus near Barrow Alaska, U.S.A.

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Home range defense in the red fox, Vulpes vulpes L.

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The influence of social and endocrine factors on urine-marking by captive wolves (Canis lupus)

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Volatile constituents of wolf (Canis lupus) urine as related to gender and season

Center News
Round yeasts present in necrotic debris within an area of osteomyelitis in the atlas of timber wolf.

Pathology Case of the Month - Timber Wolf

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Activity of radio-tagged black-footed ferrets

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Rocky Mountain bighorn sheep datasets from Dinosaur National Monument, Colorado, Utah, USA, 2006-2022

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Sprague’s Pipits (Anthus spragueii) occupying high-elevation intermontane valley habitat throughout the breeding season in southwest Montana

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Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) at the Mojave River Dam, San Bernardino County, California—2024 data summary

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PCB concentrations and activity of sea lamprey Petromyzon marinus vary by sex

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Breeding chorus indices are weakly related to estimated abundance of Boreal Chorus Frogs

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Characterization and application of a quantitative DNA marker that discriminates sex in Chinook salmon (Oncorhynchus tshawytscha)

publication
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Characterization of the OmyY1 region on the rainbow trout Y chromosome

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Biparental incubation in the chestnut-vented tit-babbler Parisoma subcaeruleum: Mates devote equal time, but males keep eggs warmer

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Cougar dispersal and natal homing in a desert environment

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