National Wildlife Health Center

News

What's all the buzz about? Stay up-to-date with the latest NWHC and USGS News items below.

Filter Total Items: 104
Date published: November 1, 2020

Pathology Case of the Month - Northern Pintail Duck

Case History: An adult male Northern Pintail Duck (Anas acuta) was found dead on a refuge in Arizona, US. Collectively at this location, 29 birds including Snow Geese (Chen caerulescens), Canada Geese (Branta canadensis), Mallard Ducks (Anas platyrhynchos), and Northern Pintail Ducks (Anas acuta) were found dead with no reported...

Date published: October 1, 2020

Pathology case of the month - Mountain Cottontail

Case History: In June 2020, one adult female, 950-g, mountain cottontail rabbit (Sylvilagus nuttallii) with bloody nasal discharge was found dead by a private landowner in Montana, U.S.A. and submitted frozen for cause of death determination. Two juvenile rabbits were found dead in proximity.

Date published: September 1, 2020

Pathology case of the month - Desert Cottontail

Case History: An adult male desert cottontail (Sylvilagus audubonii) was found dead on a ranch in west Texas, U.S.A. Other rabbits had been reported sick in the area; clinical signs included lethargy, uncoordinated movements, and blood around the nose and mouth.

Date published: July 31, 2020

Pathology Case of the Month - Mallard Ducks

Case History: In late December 2019, 25 dead mallards (Anas platyrhynchos) were observed in a retention pond belonging to an adjacent factory in Minnesota.

Date published: June 30, 2020

Pathology Case of the Month - Timber Wolf

Case History: An aged adult male 36 kg Timber Wolf was found dead in the winter of 2003 in northern Wisconsin, USA. The weather was clear and cold, with low temperatures in the negative single digits. Wolf and coyote tracks were present in the area.

Date published: June 26, 2020

National Wildlife Health Center Newsletter June 2020

In this edition of the USGS National Wildlife Health Center (NWHC) newsletter, we are focusing on current and collaborative work on chronic wasting disease (CWD).

View and download the newsletter (PDF).

Date published: June 3, 2020

Pathology Case of the Month - Common Eider

Case: A juvenile male 1.46-kg Common Eider (Somateria mollissima) was found dead on a beach in Massachusetts, USA.

Date published: April 30, 2020

Pathology Case of the Month - Canada Goose and Bald Eagles

May's Pathology Case of the Month details the cases of a Canada Goose and two Bald Eagles.

Date published: March 31, 2020

Pathology Case of Month - Zebra Finch

Case History: An adult female 9.95-g Zebra Finch (Taeniopygia guttata) from a California aviary was found dead.  It was noted to be thin several days prior to its death. 

Date published: February 28, 2020

Pathology Case of the Month - Foothill Yellow-legged Frogs

Case History: In October 2019, a mortality event of foothill yellow-legged frogs (Rana boylii) in a small creek in Santa Clara, California, USA was reported. Mortality peaked in autumn, when nighttime temperatures approached freezing. At the time of submission, the estimated number of dead was 35.

Date published: February 27, 2020

National Wildlife Health Center co-sponsors Climate Change and Wildlife Health Workshop

On January 7-9, 2020, the USGS Northeast Climate Adaption Science Center and the USGS National Wildlife Health Center sponsored a Climate Change and Wildlife Health workshop in Madison, Wisconsin for Federal, State, and Tribal wildlife managers and policy makers, university and wildlife...