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Colorado - Avian influenza in wild birds 2024-2026

Pathfinder

Pathfinder

Editor, Senior Moderator
Detections of Highly Pathogenic Avian Influenza in Wild Birds


Last Modified: July 31, 2024
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Confirmed HPAI Detections
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​
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Colorado Weld 07/12/2024 07/25/2024 EA H5N1 Eurasian collared dove Wild bird Agency harvest
Colorado Weld 07/12/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/12/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/12/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/12/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/12/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 Rock pigeon Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 Rock pigeon Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 Eurasian collared dove Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 European starling Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 European starling Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/13/2024 07/25/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5 Lark sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 Rock pigeon Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 Eurasian collared dove Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 Common grackle Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 Lark bunting Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 European starling Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/11/2024 07/22/2024 EA H5N1 House sparrow Wild bird Agency harvest
Colorado Weld 07/10/2024 07/22/2024 EA H5N1 Western kingbird Wild bird Agency harvest
Colorado Prowers 02/27/2024 03/25/2024 EA H5N1 Snow goose Wild bird Morbidity/Mortality
Colorado Adams 03/04/2024 EA H5N1 Bald eagle Wild bird Morbidity/Mortality
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/27/2024 02/08/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/28/2024 02/06/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/28/2024 02/06/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Logan 01/28/2024 02/06/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Larimer 01/23/2024 02/06/2024 EA H5N1 Red-tailed hawk Wild bird Morbidity/Mortality
Colorado Denver 01/12/2024 01/30/2024 EA H5N1 Mallard Wild bird Agency harvest
Colorado Pueblo 01/06/2024 01/25/2024 EA H5N1 Canada goose Wild bird Morbidity/Mortality
Colorado Adams 01/16/2024 01/25/2024 EA/AM H5N1 Canada goose Wild bird Morbidity/Mortality
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Colorado Bent 12/7/2023 8/28/2024 EA/AM H5N1 Snow goose Wild bird Morbidity/Mortality
Colorado Rio Blanco 11/15/2023 8/28/2024 EA H5N1 Great horned owl Wild bird Morbidity/Mortality
Colorado Weld 12/6/2023 8/28/2024 EA/AM H5N1 Snow goose Wild bird Morbidity/Mortality
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: September 10, 2024
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Colorado Logan 12/17/2023 9/5/2024 EA H5N1 American wigeon Wild bird Hunter harvest
Colorado Logan 12/16/2023 9/5/2024 EA/AM H5N1 Mallard Wild bird Hunter harvest
Colorado Boulder 12/17/2023 9/5/2024 EA/AM H5N1 Cackling goose Wild bird Morbidity/Mortality
Colorado Logan 12/12/2023 9/3/2024 EA H5N1 American wigeon Wild bird Hunter harvest
Colorado Logan 12/12/2023 9/3/2024 EA H5N1 Mallard Wild bird Hunter harvest
Colorado Denver 11/24/2023 8/30/2024 EA H5N1 Mallard Wild bird Agency harvest
Colorado Denver 11/24/2023 8/30/2024 EA H5N1 Mallard Wild bird Agency harvest
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
image.png
​https://wahis.woah.org/#/in-review/4247
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: December 17, 2024
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

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ColoradoSedgwick11/22/202412/10/2024EA H5Green-winged tealWild birdHunter harvest
ColoradoSedgwick11/22/202412/10/2024EA H5Green-winged tealWild birdHunter harvest
ColoradoSedgwick11/22/202412/10/2024EA H5Green-winged tealWild birdHunter harvest
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Virus killing invasive birds in Colorado

Published: 3:14 PM MST December 24, 2024
Updated: 3:14 PM MST December 24, 2024​

LA JUNTA, Colo. — Hundreds of birds have recently been reported dead in the lower Arkansas River valley, Colorado Parks and Wildlife (CPW) said.

CPW officers said an avian virus is killing invasive Eurasian collared doves near the towns of La Junta and Rocky Ford.

Two of the dead collared doves were sent to the CPW wildlife health lab and tested positive for Avian Paramyxovirus-1(PPMV-1), CPW Officer Jordon DePriest said. ...

https://www.9news.com/article/life/...doves/73-54b74b48-185c-441e-a26c-27a5900e8157
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Source: https://arkvalleyvoice.com/chaffee-...e-of-h5n1-avian-influenza-in-local-waterfowl/

Chaffee County Public Health Confirms Case of H5N1 Avian Influenza in Local Waterfowl
Posted by Jan Wondra | Feb 6, 2025 | Chaffee County, Environment, Health, News

Chaffee County Public Health (CCPH) has been notified by Colorado Parks and Wildlife (CPW) of a confirmed case of H5N1 (but additional presumed cases), also known as Highly Pathogenic Avian Influenza (HPAI) or bird flu, in local waterfowl in Salida. A group of approximately 20 dead or sick ducks and geese was discovered near Sands Lake in Salida, and testing has confirmed they were likely all infected with the virus....
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: May 07, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
ColoradoLarimer12/13/20245/2/2025EA/AM H5N1Great horned owlWild birdMorbidity/Mortality
ColoradoMorgan12/5/20245/2/2025EA/AM H5N1Snow gooseWild birdMorbidity/Mortality
ColoradoMorgan12/5/20245/2/2025EA/AM H5N1Snow gooseWild birdMorbidity/Mortality
ColoradoLarimer3/12/20253/24/2025EA H5MallardWild birdLive bird
ColoradoLarimer3/6/20253/13/2025EA H5MallardWild birdLive bird
ColoradoLarimer1/18/20251/28/2025EA H5Ring-necked duckWild birdHunter harvest
ColoradoLarimer1/18/20251/28/2025EA H5Ring-necked duckWild birdHunter harvest
​
...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds

​
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: June 11, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification
ColoradoBroomfield12/7/20246/6/2025EA/AM H5N1Bald eagleWild bird
ColoradoWeld12/10/20246/6/2025EA/AM H5N1Red-tailed hawkWild bird
ColoradoLarimer12/11/20246/3/2025EA/AM H5N1Red-tailed hawkWild bird
ColoradoBoulder12/19/20246/3/2025EA/AM H5N1Snow gooseWild bird
ColoradoBoulder12/19/20246/3/2025EA/AM H5N1Canada gooseWild bird
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification​
ColoradoLarimer2/9/20256/30/2025EA/AM H5N1Red-tailed hawkWild bird
ColoradoLarimer12/4/20246/10/2025EA H5N1Great horned owlWild bird
ColoradoLa Plata12/5/20246/10/2025EA H5N1Ring-necked duckWild bird
ColoradoLarimer12/8/20246/10/2025EA/AM H5N1Red-tailed hawkWild bird
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: July 09, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

​
ColoradoBroomfield2/24/20257/3/2025EA/AM H5N1Great horned owlWild birdMorbidity/Mortality
ColoradoWeld2/24/20257/3/2025EA/AM H5N1Cackling gooseWild birdMorbidity/Mortality
ColoradoLarimer1/25/20257/3/2025EA/AM H5N1Great horned owlWild birdMorbidity/Mortality

...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
​
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: August 06, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
ColoradoArapahoe4/10/20257/24/2025EA/AM H5N1Peregrine falconWild birdMorbidity/Mortality
ColoradoDenver11/24/20247/24/2025EA/AM H5N1Peregrine falconWild birdMorbidity/Mortality
ColoradoLarimer11/23/20247/11/2025EA H5N1Great horned owlWild birdMorbidity/Mortality
ColoradoChaffee1/27/20257/11/2025EA/AM H5N1Canada gooseWild birdMorbidity/Mortality
ColoradoWeld1/29/20257/11/2025EA/AM H5N1Goose (unidentified)Wild birdMorbidity/Mortality
ColoradoLarimer1/18/20257/10/2025EA/AM H5N1Goose (unidentified)Wild birdMorbidity/Mortality
ColoradoLarimer3/26/20257/7/2025EA/AM H5N1Red-tailed hawkWild birdMorbidity/Mortality
​​...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
image.png
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Saguache County, Colorado
/https://en.wikipedia.org/wiki/Saguache_County,_Colorado
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Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: September 24, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
ColoradoSaguache9/4/20259/16/2025EA H5MallardWild birdLive bird
ColoradoSaguache9/4/20259/16/2025EA H5Green-winged tealWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5Redhead duckWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5Teal (unidentified)Wild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5Green-winged tealWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
​
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
ColoradoSaguache9/2/20259/16/2025EA H5GadwallWild birdLive bird
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
​
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
ColoradoLarimer9/19/20259/26/2025EA H5Wild turkeyWild birdMorbidity/Mortality
ColoradoLarimer9/18/20259/25/2025EA H5Turkey vultureWild birdMorbidity/Mortality
ColoradoLarimer9/17/20259/24/2025EA H5Great horned owlWild birdMorbidity/Mortality
ColoradoLarimer9/9/20259/22/2025EA H5MallardWild birdLive bird
ColoradoLarimer9/13/20259/22/2025EA H5Blue-winged tealWild birdHunter harvest
ColoradoLarimer9/13/20259/22/2025EA H5Blue-winged tealWild birdHunter harvest
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
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