National Wildlife Health Center

Multimedia

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

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Map of North America showing locations of chronic wasting disease in red and tribal lands in grey.
October 12, 2021

Distribution of CWD in Relation to Tribal Lands in the U.S.

Distribution of Chronic Wasting Disease in North America, in Relation to Tribal Lands in the Conterminous United States. Updated on October 12, 2021.

Map of North America showing locations where chronic wasting disease has been detected.
October 1, 2021

Distribution of Chronic Wasting Disease in North America

Distribution of Chronic Wasting Disease in North America, updated October 01, 2021

Photomicrographs from a California newt showing tail, lung, and inner ear.
September 30, 2021

Photomicrographs from a California newt found moribund in California

Photomicrographs from a California newt (Taricha torosa) found moribund in California, USA. (A) Necrosis of the tail tip with exposed vertebral bone (B), hyperplastic epithelial regrowth at the edges (arrowhead), moderate mixed leukocytes and dilated lymphatics (*), and a few osteoclasts remodeling the exposed bone (arrows). H&E stain 4X. (B) Cross section of

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Necropsy photos from crop, spleen, and liver of red crossbills and American goldfinches.
September 20, 2021

Photographs from red crossbills and American goldfinches from Montana

Photographs from red crossbills (Loxia curvirostra; A, C) and American goldfinches (Spinus tristis; B, D) from Montana, U.S.A. (A) A large yellow/tan plaque (asterisk) is present on the mucosal surface of the crop. (B) White seed-like plaques (arrow) are present on the mucosal surface of the crop. (C) Numerous tan nodules (arrow) are present throughout

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Photomicrographs of mass from a sandhill crane
July 20, 2021

Photomicrographs from a sandhill crane found dead is Indiana U.S.A.

Photomicrographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A.  (A) The mass is composed of islands of well-differentiated chondrocytes separated by fibrovascular connective tissue. There is minimal cellular pleomorphism and no mitotic figures are seen (inset). H&E stain.  (B) Multifocally, islands of chondrocytes are

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The outside and a cut section of a firm mass on the right cranial hock of a crane with a roughened black and tan surface.
July 20, 2021

Chondroma mass on the hock of a sandhill crane

Photographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A.  (A) There is a firm mass on the right cranial hock with a roughened black and tan surface. (B) On cut section, the mass is gelatinous, mottled light pink to gray, and extends to the joint space (arrow).

Two maps of the United States show the change in risk of Bsal.
July 5, 2021

Maps of Bsal risk in the U.S. comparing pre- and post- action risk

Relative risk maps of combined Bsal risk, comparing (a) pre-action risk (2010–2015), to (b) risk after implementation of surveillance and of importation restrictions on over 200 salamander species. Relative risk scores were scaled to 2010–2015. (c) Change in relative risk score per county as proportion of pre-action risk. Each point is a county, colored by its risk score

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Two photos of schistosome ova in a raccoon pancreas and blood vessel.
July 1, 2021

Photomicrograph from a raccoon found sick and euthanized in Texas

Photomicrograph from a raccoon (Procyon lotor) found sick and euthanized in Texas, US.  (A) A cluster of schistosome ova are present in the pancreas. Ova are thin-shelled and are not operculated. Each viable egg contains a miracidium (arrows). The ova are surrounded by infiltrates of eosinophils, macrophages, and lymphocytes. H&E stain. (B) Adult schistosomes

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Rat snake museum specimen
June 10, 2021

Rat snake museum specimen

This rat snake is a preserved museum specimen with snake fungal disease that was collected in Tennessee in 1973. The photo was taken at the USGS National Wildlife Health Center in 2017 as part of a study.

Photographs from raccoon tissue showing long tan nematodes.
May 17, 2021

Nematodes in raccoon tissue

Photographs from a raccoon (Procyon lotor) from Arizona, US.  (A) Large tan nematodes (arrowheads) are present within the subcutaneous tissue and muscle fascia in the distal right forelimb. (B) Closer view of the distal right forelimb showing the large tan nematodes (arrowheads).

Photographs from a wild turkey showing yellow lesions covering the eyelids, head, and neck
April 20, 2021

Photographs from a wild turkey found dead in Minnesota

Photographs from a wild turkey (Meleagris gallopavo) found dead in Minnesota, USA.  (A) There are numerous multifocal to coalescing yellow proliferative lesions covering the eyelids, head, and neck with a region of ulceration and necrosis (*).  (B) Yellow irregular plaques (arrow heads) multifocally cover the oral cavity.

Pink and purple photomicrographs showing lesions in epithelium.
April 20, 2021

Photomicrographs from a wild turkey found dead in Minnesota

Photomicrographs from a wild turkey (Meleagris gallopavo) found dead in Minnesota, USA.  (A) The normal epithelium becomes markedly thickened due to hyperplasia of the stratum spinosum (left to right) with regions of ulceration and crusting (arrow). H&E stain.  (B) Epithelial cells in hyperplastic regions are multifocally swollen (vacuolar degeneration) (

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