New and Ongoing Wildlife Mortality Events Nationwide

USGS and a network of partners across the country work on documenting wildlife mortality events in order to provide timely and accurate information on locations, species and causes of death.  This information is used by natural resource managers, researchers, public health officials and  legislators  to help design disease prevention and mitigation strategies, to address interconnections between human, domestic animal and wildlife disease, and to assist in identification of 'normal' disease issues vs. biosecurity concerns.

These data are not all-inclusive. Information on some outbreaks may not be received until months or years after the event, but efforts continue to make the information as complete as possible. For information on previous wildlife mortality events and events that used to be on this page, please see the Quarterly Mortality Reports.

 The Recent Mortality Events Map visualizes the data on this page in an interactive map. Watch for trends and filter events based on type and location.

For additional information on mortalities

• Western U.S.: Barb Bodenstein, 608-270-2447, bbodenstein@usgs.gov
• Central U.S.: Dr. LeAnn White, 608-270-2491, clwhite@usgs.gov
• Eastern U.S.: Dr. Anne Ballmann, 608-270-2445, aballmann@usgs.gov
• Hawaii, Pacific Islands: Dr. Thierry Work, 808-792-9520, thierry_work@usgs.gov
• Nationwide, single animal cases only: Jennifer Bradsby, 608-270-2443, jbradsby@usgs.gov

More information on reporting an event can be found at the event reporting page.

Date last updated : Jan 09, 2012

Explanation of fields:

Mortality begin date is the date the mortality began -- for most wildlife disease events, this is an estimate only, as carcasses may not be noticed immediately.

End date is again usually an estimate of the last day new carcasses were found.

State and country identify the area in which the mortality is occurring.  NOTE:  avian mortality events may cover several counties and possibly multiple states given the migratory nature of many species.

Species shown on the table include up to 5 of the species involved in the event.  In some cases, group identifiers like 'waterfowl' or 'shorebirds' have been used instead of specific names when a large number of different species are involved.

Diagnosis includes a final diagnosis, if known, with no qualifiers; a suspected diagnosis once preliminary investigations have been made; or an indication that tests are still in process.  NOTE:  In some instances, where mortality occurred but no specimens were sent to NWHC or another diagnostic laboratory or -- in rare instances -- where tests could not definitely identify a trigger for the mortality, the cause of death may never be determined.  Such events are identified with the word 'open' in the diagnosis column.

The estimated mortality provides some indication of the severity of the event.  Numbers may change rapidly from one week to the next.

The 'reported by' field indicates the lab(s) or agencies who reported or are working on the mortality event.

USGS NWHC = USGS National Wildlife Health Center
USDA NVSL = USDA National Veterinary Services Lab
SCWDS = Southeastern Cooperative Wildlife Disease Study

NOTE: If you find a dead bird, mammal, reptile or amphibian, please contact your state natural resource agency first.  They will know the proper reporting procedures for your area.  Contact information may be found online or in the government pages of your local telephone book.