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.
More information on reporting an event can be found at the event reporting page.
Date last updated :
Sep 15, 2008
Mortality Begin Date |
End Date |
State |
County |
Species |
Diagnosis |
Estimated Mortality to Date |
NWHC Contact |
09/04/2008 | 09/05/2008 | UT | CACHE | Mallard | Open | < 10 | Schuler |
08/29/2008 | ongoing | ND | EMMONS | Mallard, Gadwall | Botulism suspect | < 50 | Schuler |
08/27/2008 | ongoing | MT | LEWIS AND CLARK | Long-legged Bat | Open | ~ 50 | Schuler |
08/25/2008 | ongoing | MT | TETON | American White Pelican | Open | < 10 | Schuler |
08/24/2008 | 08/24/2008 | MO | SHANNON | Eastern Pipistrelle | Trauma suspect | < 25 | Ballmann |
08/21/2008 | ongoing | ND | GRAND FORKS | Semipalmated Sandpiper, Least Sandpiper, Franklin's Gull | Open | < 25 | Schuler |
08/11/2008 | ongoing | CA | IMPERIAL | American White Pelican, Unidentified Gull, California Brown Pelican, Black-necked Stilt | Botulism suspect | ~ 200 | Schuler |
08/10/2008 | 08/21/2008 | -- | MIDWAY ATOLL | Laysan Duck | Botulism type C | < 150 | Schuler |
08/10/2008 | ongoing | WI | DODGE | Unidentified Shorebird, Unidentified Gull, Common Snipe, Northern Shoveler, American Wigeon | Open | ~ 1000 | Ballmann |
08/08/2008 | 08/25/2008 | MI | OAKLAND | White-Tailed Deer | Epizootic hemorrhagic disease | < 25 | Ballmann |
08/04/2008 | ongoing | ND | MCLEAN | Mallard, American Wigeon, Gadwall, Blue-winged Teal, American Coot | Botulism type C | < 150 | Schuler |
08/01/2008 | 08/25/2008 | SD | BROWN | Redhead Duck, Unidentified Gull, Unidentified Grebe, Unidentified Duck | Botulism type C | < 100 | Schuler |
07/29/2008 | ongoing | MT | PHILLIPS | Unidentified Duck, American Coot | Botulism type C | < 25 | Schuler |
07/29/2008 | ongoing | CA | MONTEREY | Stickleback | Open | < 100 | Schuler |
07/27/2008 | 07/29/2008 | AL | MORGAN | Canada Goose | Open: emaciation | < 50 | Ballmann |
07/25/2008 | ongoing | SD | DAY | American White Pelican | Viral Infection: West Nile | < 50 | Schuler |
07/25/2008 | ongoing | AK | VALDEZ - CORDOVA | Black-legged Kittiwake | Trauma, Emaciation | < 50 | Schuler |
07/21/2008 | ongoing | NE | FILLMORE | Plains Leopard Frog | Open | < 10 | Schuler |
07/20/2008 | ongoing | MT | PHILLIPS | Mallard, Blue-winged Teal, Green-winged Teal, Northern Shoveler, Gadwall | Botulism type C | ~ 50 | Schuler |
07/16/2008 | 07/30/2008 | MD | CECIL | Red Bat | Trauma | ~ 10 | Ballmann |
07/14/2008 | ongoing | MN | ST LOUIS | Double-crested Cormorant, American White Pelican, Ring-billed Gull | Newcastle Disease Virus | < 75 | Ballmann |
07/14/2008 | ongoing | NE | CLAY | Plains Leopard Frog | Parasitism suspect | ~ 200 | Schuler |
07/14/2008 | ongoing | NV | WASHOE | Rock Dove, Mourning Dove | Parasitism: trichomoniasis | ~ 300 | Schuler |
07/10/2008 | ongoing | MN | LAC QUI PARLE | American White Pelican, Ring-billed Gull, Double-crested Cormorant, Canada Goose, Great Egret | Viral Infection: West Nile, Newcastle Disease Virus | ~ 1950 | Ballmann |
07/03/2008 | 07/31/2008 | UT | BOX ELDER | California Gull | Undetermined | < 25 | Schuler |
07/03/2008 | ongoing | ND | STUTSMAN | Black-crowned Night-Heron, Unidentified Gull, American White Pelican | Emaciation, Salmonellosis, Open | < 25 | Schuler |
07/01/2008 | 07/18/2008 | NV | WASHOE | Unidentified Waterfowl, Mallard, Canada Goose, Gadwall, American Coot | Botulism type C | < 25 | Schuler |
07/01/2008 | ongoing | TX | BREWSTER | Mourning Dove | Parasitism: trichomoniasis | ~ 10 | Schuler |
07/01/2008 | 07/27/2008 | WI | LA CROSSE | Eastern Bluebird | Open: emaciation | ~ 100 | Ballmann |
07/01/2008 | 07/15/2008 | MA | MIDDLESEX | Mallard | Botulism suspect | < 25 | Ballmann |
07/01/2008 | ongoing | MT | GALLATIN | Elk, Unidentified Deer | Bacterial Infection: anthrax | < 25 | Schuler |
06/30/2008 | ongoing | MI | BENZIE | Caspian Tern, Ring-billed Gull, Least Sandpiper, Double-crested Cormorant, Common Merganser | Botulism type E | < 25 | Ballmann |
06/30/2008 | ongoing | MN | FARIBAULT | Double-crested Cormorant, American White Pelican, Ring-billed Gull, Common Loon, Great Blue Heron | Newcastle Disease Virus, Viral Infection: Avian Paramyxovirus 1 | ~ 1000 | Ballmann |
06/30/2008 | 07/15/2008 | WI | BUFFALO | Little Brown Bat | Undetermined | < 10 | Ballmann |
06/29/2008 | 07/03/2008 | OH | FRANKLIN | Mallard, Hybrid Mallard Duck | Botulism type C | < 25 | Ballmann |
06/27/2008 | 07/15/2008 | MI | MASON | Double-crested Cormorant, Ring-billed Gull, Unidentified Tern | Botulism type E | < 50 | Ballmann |
06/26/2008 | ongoing | MT | RAVALLI | Red Crossbill, House Finch, Pine Siskin | Salmonellosis | ~ 50 | Schuler |
06/25/2008 | 07/22/2008 | WI | WOOD | Little Brown Bat | Emaciation | ~ 10 | Ballmann |
06/20/2008 | 07/14/2008 | ND | MOUNTRAIL | Mallard, Gadwall, Eared Grebe, Ruddy Duck, Franklin's Gull | Toxicosis: salt | < 150 | Schuler |
06/18/2008 | ongoing | CA | SANTA CRUZ | California Red-legged Frog | Open | < 10 | Schuler |
06/16/2008 | 07/21/2008 | WI | WINNEBAGO | Little Brown Bat, Big Brown Bat | Open | ~ 50 | Ballmann |
06/01/2008 | ongoing | AZ | MARICOPA | Mallard, Red-Eared Slider Turtle, Unidentified Domestic Or Hybrid Goose, Unidentified Passerine, Canada Goose | Botulism type C | < 75 | Schuler |
06/01/2008 | 07/15/2008 | WI | GRANT | Little Brown Bat | Emaciation: starvation suspect | < 50 | Ballmann |
06/01/2008 | 07/31/2008 | WI | MONROE | Eastern Bluebird | Parasitism suspect, Emaciation: starvation suspect | < 100 | Ballmann |
05/26/2008 | ongoing | PA | ERIE | Ring-billed Gull | Botulism type C | < 25 | Ballmann |
05/26/2008 | ongoing | NE | KEITH | House Sparrow | Viral Infection suspect | < 25 | Schuler |
05/21/2008 | 07/07/2008 | ND | MCLEAN | Ring-billed Gull | Pneumonia, Airsacculitis, Emaciation | ~ 50 | Schuler |
05/20/2008 | ongoing | WA | CLALLAM | Black-tailed Deer | Open | < 10 | Schuler |
05/15/2008 | ongoing | SD | FALL RIVER | Black-footed Ferret, Black-tailed Prairie Dog | Sylvatic plague | ~ 100 | Schuler |
05/04/2008 | ongoing | NH | COOS, CHESHIRE | Little Brown Bat | Open | ~ 10 | Ballmann |
05/01/2008 | ongoing | AZ | MARICOPA | Muscovy Duck, Mallard | Botulism suspect | < 50 | Schuler |
03/17/2008 | ongoing | CT | LITCHFIELD | Big Brown Bat, Northern Long-eared Bat, Little Brown Bat | Open | unknown | Ballmann |
01/15/2008 | ongoing | MA | HAMPDEN | Eastern Pipistrelle, Northern Long-eared Bat, Little Brown Bat | Open | ~ 300 | Ballmann |
01/01/2008 | ongoing | NY | ALBANY, ULSTER | Big Brown Bat, Little Brown Bat | Open | unknown | Ballmann |
01/01/2008 | ongoing | VT | BENNINGTON | Little Brown Bat, Northern Long-eared Bat | Open | ~ 10000 | Ballmann |
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 contact field provides the name of the individual to contact for more information about the mortality event.
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.
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