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, contact the NWHC field epidemiology team at 608-270-2480 or NWHCemail@example.com.
More information on reporting an event can be found at the event reporting page.
Date last updated :
Jan 14, 2015
|Mortality Begin Date
||Estimated Mortality to Date
|01/08/2015||ongoing||NE||SCOTTS BLUFF||Mallard||Open||< 25||USGS NWHC|
|01/05/2015||ongoing||CA||HUMBOLDT||American Coot, American Wigeon, Ruddy Duck, Northern Pintail, Mallard||Open||~ 600||USGS NWHC|
|01/02/2015||ongoing||IL||FAYETTE||Lesser Snow Goose, Mallard, Ross' Goose||Open||~ 100||USGS NWHC|
|01/01/2015||ongoing||MS||TALLAHATCHIE||Lesser Snow Goose, Green-winged Teal, Northern Pintail, Mallard, Greater White-fronted Goose||Open||< 75||USGS NWHC|
|01/01/2015||ongoing||CA||IMPERIAL||Double-crested Cormorant, Unidentified Gull, Northern Shoveler, Ruddy Duck, Brown Pelican||Avian cholera suspect||< 250||USGS NWHC|
|12/31/2014||01/01/2015||AR||WHITE||Mallard, Green-winged Teal, Northern Pintail||Open||< 300||USGS NWHC|
|12/29/2014||ongoing||IL||MASON||Lesser Snow Goose, Greater White-fronted Goose||Open||~ 50||USGS NWHC|
|12/28/2014||ongoing||FL||MONROE||Turkey Vulture||Open||< 50||USGS NWHC|
|12/25/2014||ongoing||TX||OCHILTREE||Eurasian Collared Dove||Viral Infection: Avian Paramyxovirus 1||~ 50||USGS NWHC|
|12/21/2014||ongoing||WA / OR||GRAYS HARBOR / LINCOLN||Cassin's Auklet||Open: emaciation/starvation||~ 2000||USGS NWHC|
|12/05/2014||ongoing||NV||MINERAL||American Coot, American Wigeon, Northern Shoveler, Redhead Duck, Ruddy Duck||Avian cholera||~ 1000||USGS NWHC|
|12/01/2014||ongoing||CA||STANISLAUS, MERCED||Ross' Goose, Gadwall, Northern Pintail, Aleutian Canada Goose, American Coot||Avian cholera||< 100||USGS NWHC|
|12/01/2014||ongoing||WA||WHATCOM||Mallard, American Wigeon, Northern Pintail, Northern Shoveler, Ruddy Duck||Aspergillosis, Avian influenza, Emaciation||< 150||USGS NWHC|
|11/26/2014||12/15/2014||UT||SALT LAKE||Eared Grebe, Unidentified Gull||Avian cholera||~ 6000||USGS NWHC|
|11/26/2014||ongoing||AZ||MARICOPA||Great-tailed Grackle, Western Screech Owl||Trauma: impact, Toxicosis suspect||< 25||USGS NWHC|
|11/24/2014||ongoing||AZ||MARICOPA||Mourning Dove, Unidentified Grackle||Toxicosis: strychnine||< 25||USGS NWHC|
|11/21/2014||ongoing||CA||SUTTER||Ross' Goose, American Wigeon, Lesser Snow Goose||Avian cholera||< 5||USGS NWHC|
|11/15/2014||ongoing||NM||SOCORRO||Snow Goose, Ross' Goose, American Coot, Northern Pintail, Mallard||Avian cholera suspect||~ 3000||- no diagnostics pursued -|
|11/10/2014||12/05/2014||TX||HIDALGO||Eurasian Collared Dove||Viral Infection: pigeon paramyxovirus 1||< 50||USGS NWHC|
|11/03/2014||11/12/2014||FL||PINELLAS||Red Knot, Unidentified Gull||Undetermined, Emaciation||< 25||USGS NWHC|
|11/01/2014||11/06/2014||LA||OUACHITA||American Coot, Gadwall, Green-winged Teal, Unidentified Duck||Trauma||~ 150||USGS NWHC|
|10/31/2014||11/15/2014||NY||CHAUTAUQUA, ERIE||Common Loon, Herring Gull, Great Black-backed Gull, Bonaparte's Gull, Long-Tailed Duck||Botulism suspect||< 900||NY Dept Env Cons|
|10/29/2014||10/31/2014||PA||CHESTER||Canada Goose||Esophageal impaction: bean, Necrotic esophagitis||< 10||USGS NWHC|
|10/26/2014||ongoing||OR||COOS||Cassin's Auklet, Sooty Shearwater, Brandt's Cormorant, Common Murre, Western Gull||Emaciation, Plastic ingestion||< 50||USGS NWHC|
|10/15/2014||11/22/2014||WI||LA CROSSE||American Coot, Lesser Scaup||Parasitism: trematodiasis, Parasitism: Leyogonimus polyoon, Parasitism: Cyathocotyle bushiensis||< 350||USGS NWHC|
|10/15/2014||10/15/2014||OH||MEDINA||Green Frog||Trauma, Parasitism||~ 200||USGS NWHC|
|10/12/2014||10/31/2014||MD||DORCHESTER||Diamondback Terrapin||Undetermined||~ 200||USGS NWHC|
|10/07/2014||ongoing||MD||KENT||Mallard||Undetermined, Anemia, Airsacculitis||~ 250||USGS NWHC|
|10/06/2014||ongoing||CA||SONOMA, SAN LUIS OBISPO, MONTEREY||Cassin's Auklet||Emaciation||~ 150||USGS NWHC|
|10/03/2014||10/10/2014||UT||DAVIS||Eared Grebe||Predation, Botulism type C||< 25||USGS NWHC|
|10/01/2014||10/29/2014||NV||WASHOE||Mallard, Gadwall||Botulism type C||< 10||USGS NWHC|
|10/01/2014||10/31/2014||UT||UTAH||Mallard, Dog||Botulism suspect, Toxicosis: blue-green algae suspect||~ 100||CA Animal Health/Food Safety Lab, UT Vet Diagnostic Lab|
|09/20/2014||10/31/2014||OR||MULTIPLE COUNTIES||Common Murre, Rhinoceros Auklet||Emaciation: starvation suspect, Avian pox suspect||unknown||USGS NWHC, OR State Diagnostic Lab|
|09/14/2014||10/14/2014||AZ||YAVAPAI||Gambel's Quail||Enteritis, Emaciation||~ 10||USGS NWHC|
|09/07/2014||11/25/2014||TX||HOCKLEY||House Sparrow, Unidentified Hawk, Long-billed Thrasher||Trauma, Toxicosis suspect||~ 100||USGS NWHC|
|09/06/2014||11/22/2014||MN||HOUSTON||American Coot, Lesser Scaup||Parasitism: trematodiasis, Parasitism: Leyogonimus polyoon, Parasitism: Cyathocotyle bushiensis||< 150||USGS NWHC|
|09/02/2014||10/28/2014||ID||PAYETTE||Green-winged Teal, Unidentified Duck, American Coot, Unidentified Avian, Great Horned Owl||Botulism type C||~ 50||USGS NWHC|
|08/18/2014||10/15/2014||AZ||MOHAVE||Eurasian Collared Dove, Rock Dove||Viral Infection: pigeon paramyxovirus 1 suspect, Undetermined, Trauma: impact||~ 150||USGS NWHC|
|08/04/2014||10/04/2014||ND||MOUNTRAIL||American White Pelican||Viral Infection: West Nile, Aspergillosis||~ 50||USGS NWHC|
|08/02/2014||10/31/2014||ND||STUTSMAN||Double-crested Cormorant, Canada Goose||Viral Infection: virulent Newcastle Disease, Salmonellosis, Aspergillosis||~ 50||USGS NWHC|
|08/01/2014||10/23/2014||NV||WASHOE||Mallard, Unidentified Gull, Common Merganser, Green-winged Teal||Botulism type C||< 25||USGS NWHC|
|07/26/2014||10/08/2014||CA||SACRAMENTO||Mallard, Hybrid Mallard Duck||Botulism type C||< 100||USGS NWHC|
|07/25/2014||10/17/2014||MD||TALBOT||Double-crested Cormorant||Salmonellosis, Necrotic enteritis, Emaciation||< 300||USGS NWHC|
|07/14/2014||12/16/2014||NV||ELKO||Eurasian Collared Dove||Viral Infection: pigeon paramyxovirus 1||~ 75||USGS NWHC|
|07/04/2014||10/04/2014||CA||SISKIYOU||Mallard, Green-winged Teal, Northern Pintail, Northern Shoveler, Unidentified Avian||Botulism type C||< 6850||USGS NWHC|
|06/27/2014||11/08/2014||MI||LEELANAU, BENZIE||Common Loon, White-winged Scoter, Double-crested Cormorant, Ring-billed Gull, Long-Tailed Duck||Botulism type E||< 100||USGS NWHC|
|06/01/2014||ongoing||CA||LOS ANGELES||Western Pond Turtle, Red-Eared Slider Turtle||Emaciation: starvation suspect, Bacterial pneumonia and septicemia, Emaciation: anemia||< 350||USGS NWHC|
|05/01/2014||11/20/2014||CA||MULTIPLE COUNTIES||American Crow, Western Scrub Jay, Yellow-billed Magpie, Steller's Jay, Common Raven||Viral Infection: West Nile, Undetermined, Aspergillosis||~ 700||CA Animal Health/Food Safety Lab, USGS NWHC|
|02/09/2014||11/13/2014||CA||FRESNO, KERN||Mourning Dove||Parasitism: trichomoniasis||< 200||CA Fish & Game Disease Lab|
|01/06/2014||ongoing||IL||ALEXANDER||Lesser Snow Goose||Avian cholera suspect||< 5||USGS NWHC|
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 'undetermined' 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.