National Wildlife Health Center

Multimedia

Search here for some of our available field imagery and videos.

Filter Total Items: 251
Map of North America showing locations where chronic wasting disease has been detected.
July 2, 2020

Distribution of Chronic Wasting Disease in North America

Distribution of Chronic Wasting Disease in North America, updated July 2, 2020.

Photographs of a common eider liver and pancreas.
June 3, 2020

Photographs from a Common Eider (Somateria mollissima)

Photographs from a Common Eider (Somateria mollissima) from Massachusetts, USA. (A) There are scattered, small, pale foci in the liver. (B) Petechial and ecchymotic hemorrhages are present in the pancreas.

Photomicrographs from a Common Eider showing necrosis.
June 3, 2020

Photomicrographs from a Common Eider (Somateria mollissima)

Photomicrographs from a Common Eider (Somateria mollissima) from Massachusetts, USA. (A) Multiple pale foci of acute hepatic necrosis. (B) Multiple foci of acute pancreatic necrosis (arrow).

Undersides of two frogs one of which shows organs  inside abdomen.
February 5, 2020

Images from necropsy of two foothill yellow-legged frogs (Rana boylii)

Two foothill yellow-legged frogs (Rana boylii) found dead in Santa Clara, California, USA. (A) One animal had pinpoint red foci on the ventral abdomen. (B) Another animal had a diffusely reddened kidney (arrow).

Photomicropgraphs with arrows showing location of lesions.
February 5, 2020

Photomicrographs from a foothill yellow-legged frog (Rana boylii)

Photomicrographs from a foothill yellow-legged frog (Rana boylii) found dead in Santa Clara, California, USA. (A) Small areas of epidermal necrosis with apoptotic keratinocytes and nuclear debris are multifocally present (arrow). (B) The liver shows randomly distributed, variably sized areas of coagulative necrosis (*). A few adjacent hepatocytes have

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Photograph of a muskrat liver with pinpoint white and red foci.
January 23, 2020

Photograph from a muskrat (Ondatra zibethicus) found dead in Ohio, USA

Photograph from a muskrat (Ondatra zibethicus) found dead in Ohio, USA. The liver contained disseminated pinpoint to 1-mm diameter white foci (arrows). Tyzzer's disease.

Photographs from a muskrat liver with random areas of hepatocellular necrosis indicated.
January 23, 2020

Photographs from a muskrat (Ondatra zibethicus) liver

Photographs from a muskrat (Ondatra zibethicus) found dead in Ohio, USA. (A) Throughout the liver are random areas of hepatocellular necrosis (star). H&E stain. (B) Hepatocytes at the periphery of necrotic areas multifocally contain packets of argyrophilic bacterial rods (arrows). Modified Steiner’s stain.

Lung tissue from a Gyrfalcon
December 19, 2019

Lung from a captive, adult male, 930-g Gyrfalcon, found dead in WA

Lung from a captive, adult male, 930-g Gyrfalcon, found dead in Washington, USA.  Lung shows diffuse severe congestion and edema.  

The falcon became ill and died after consumption of a (presumptively) HPAI virus-infected American wigeon (Anas americanus) from Wiser Lake in Washington, USA. Waterfowl carrying HPAI viruses were detected at Wiser Lake in

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Photographs from a Great-Horned Owl and Eurasian Collared-Dove showing injuries on birds.
November 29, 2019

Great-Horned Owl and Eurasian Collared-Dove found dead in Utah

Photographs from a Great-Horned Owl and Eurasian Collared-Dove found dead in a residential yard in Utah, U.S. (A) The owl had singeing of the rictal bristles on the right side of the face (inset), swollen right eyelids, and a cloudy and thickened right cornea. (B) There was a wound with thickened edges on the bottom of the left foot and (C) red streaking on the digits of

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Photo showing close ups of hemorrhage and necrosis in pink in purple colors.
November 29, 2019

Photomicrographs from a Great-Horned Owl

Photomicrographs from a Great-Horned Owl showing (A) moderate acute hemorrhage in the right atrial epicardium extending into the myocardium and (B) a focally extensive area of coagulative necrosis of the epidermis and dermis (arrow) consistent with an electrical burn.

November 1, 2019

UV Screening for Bat White-Nose Syndrome Surveillance

Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin. White-nose syndrome (WNS) is a highly fatal disease affecting

November 1, 2019

UV Screening for Bat White-Nose Syndrome Surveillance —Audio-Described

Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin. White-nose syndrome (WNS) is a highly fatal disease affecting