News

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...

Case History: In June 2020, one adult female, 950-g, mountain cottontail rabbit (Sylvilagus nuttallii) with bloody nasal discharge was found dead by a...

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...

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

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...

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

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

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

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...

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...