US - Avian influenza H5N5 in wild birds 2023-2026

[Pathfinder]

Hat tip to Michael Coston​

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: November 13, 2025
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​State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

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New Jersey	Cape May	9/5/2025	9/12/2025	EA H5N5	Peregrine falcon	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	2/7/2025	8/1/2025	EA H5N5	Red-breasted merganser	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	2/7/2025	8/1/2025	EA H5N5	Common eider	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	4/25/2025	8/1/2025	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Bristol	2/27/2025	8/1/2025	EA H5N5	Black vulture	Wild bird	Morbidity/Mortality
Massachusetts	Nantucket	2/7/2025	7/30/2025	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Essex	4/4/2025	7/30/2025	EA H5N5	Common raven	Wild bird	Morbidity/Mortality
Massachusetts	Essex	4/4/2025	7/30/2025	EA H5N5	Common raven	Wild bird	Morbidity/Mortality
Michigan	Leelanau	5/29/2025	7/30/2025	EA H5N5	Turkey vulture	Wild bird	Morbidity/Mortality
Connecticut	New London	2/25/2025	7/2/2025	EA H5N5	Turkey vulture	Wild bird	Morbidity/Mortality

Massachusetts	Barnstable	2/8/2025	6/5/2025	EA H5N5	Bufflehead	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	10/21/2024	4/28/2025	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	10/21/2024	4/28/2025	EA H5N5	Sanderling	Wild bird	Morbidity/Mortality
Massachusetts	Middlesex	12/12/2023	9/20/2024	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Middlesex	5/1/2024	6/4/2024	EA H5N5	Turkey vulture	Captive wild bird	Morbidity/Mortality
Massachusetts	Middlesex	5/3/2024	6/4/2024	EA H5N5	Turkey vulture	Wild bird	Morbidity/Mortality
Massachusetts	Middlesex	5/3/2024	6/4/2024	EA H5N5	Turkey vulture	Wild bird	Morbidity/Mortality
Massachusetts	Middlesex	5/3/2024	6/4/2024	EA H5N5	Turkey vulture	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	3/16/2024	6/4/2024	EA H5N5	Red-tailed hawk	Captive wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/18/2024	3/1/2024	EA H5N5	Great black-backed gull	Captive wild bird	Morbidity/Mortality

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Maine	York	5/23/2023	12/2/2023	EA H5N5	Herring gull	Wild bird	Morbidity/Mortality
Massachusetts	Nantucket	3/17/2023	5/26/2023	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Nantucket	3/17/2023	5/26/2023	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	2/8/2023	5/26/2023	EA H5N5	Great black-backed gull	Captive wild bird	Morbidity/Mortality
New York	Suffolk	3/20/2023	3/28/2023	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	Unknown	2/14/2023	EA H5N5	Great black-backed gull	Captive wild bird	Morbidity/Mortality
Massachusetts	Plymouth	Unknown	2/14/2023	EA H5N5	Great black-backed gull	Captive wild bird	Morbidity/Mortality
Massachusetts	Barnstable	Unknown	2/14/2023	EA H5N5	Great black-backed gull	Captive wild bird	Morbidity/Mortality
Massachusetts	Barnstable	2/3/2023	2/14/2023	EA H5N5	Great black-backed gull	Wild bird	Morbidity/Mortality

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29 entries (filtered from 15,709 total entries)


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

 

[Pathfinder]

Aphis added one more entry to their report on H5N5 in wild birds. The total is now 30.

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: November 18, 2025
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method​
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Massachusetts

Barnstable

1/21/2025

6/24/2025

EA H5N5

American crow

Wild bird

Morbidity/Mortality

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Showing 11 to 20 of 30 entries (filtered from 15,920 total entries)

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

 

[Pathfinder]

Aphis added 2 more H5N5 cases, bringing the total to 32.

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: December 16, 2025

(screenshot)

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Showing 1 to 10 of 32 entries (filtered from 16,757 total entries)

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

Aphis added 2 more H5N5 cases, bringing the total to 34.

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: December 23, 2025
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(screenshot)​

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Showing 1 to 10 of 34 entries (filtered from 17,048 total entries)


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

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[sharon sanders]

hat tip to Pathfinder


It is our practice to frequently take screenshots. This is very handy when initial data is withdrawn or changed. Also - this site is public so many entities may have our presentations of data. It really does no good to withdraw or change any official data without an explanation. And we do not omit factual data once it is posted unless we know - without a doubt - that it was a mistake.

We are watching.

 

[Pathfinder]

The number of entries has increased to 35. California (see post #4) was removed.

Sorted by state:

​Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: February 24, 2026
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification

Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird

Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird
Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird

Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird
Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird

35 entries (filtered from 18,755 total entries)

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

​As of March 18, 2026, Aphis has added 9 more H5N5 entries, bringing the total to 44.

Sorted by state:

​Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: March 18, 2026
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality
Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality

Iowa Story 12/15/2025 12/23/2025 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird Morbidity/Mortality

Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird Morbidity/Mortality
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird Morbidity/Mortality
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality​

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Mississippi Tallahatchie 12/10/2025 12/19/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

Missouri Clay 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Douglas 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri St. Louis 12/8/2025 12/23/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird Morbidity/Mortality

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality

Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality
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Virginia Fairfax 1/20/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird Hunter harvest
Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest​​

44 of 44 entries (filtered from 19,040 total entries)

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

 

[Pathfinder]

As of March 25, 2026, Aphis has added 2 more H5N5 entries, bringing the total to 46.

Sorted by state:

​Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: March 25, 2026​

State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality
Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality

Iowa Story 12/15/2025 12/23/2025 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird Morbidity/Mortality

Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird Morbidity/Mortality
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird Morbidity/Mortality
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality​

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Mississippi Tallahatchie 12/10/2025 12/19/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

Missouri Unknown 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird
Missouri Jackson 12/17/2025 12/31/2025 EA/AM H5N5 Ross's goose Wild bird​
Missouri Clay 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Douglas 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri St. Louis 12/8/2025 12/23/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird Morbidity/Mortality

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality

Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality
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Virginia Fairfax 1/20/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird Hunter harvest
Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest​​

​46 of 46 entries (filtered from 19,112 total entries)​​

https://www.aphis.usda.gov/livestoc...n-influenza/hpai-detections/wild-birds?page=1

 

[Pathfinder]

As of April 01, 2026, Aphis has added 4 more H5N5 entries, bringing the total to 50.

Sorted by state​

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: April 01, 2026
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality
Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality

Iowa Story 12/15/2025 12/23/2025 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird Morbidity/Mortality

Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird Morbidity/Mortality
Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird Morbidity/Mortality
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Morta

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Mississippi Tallahatchie 12/10/2025 12/19/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

Missouri Jefferson 12/10/2025 1/23/2026 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Holt 12/31/2025 1/6/2026 EA/AM H5N5 Greater white-fronted goose Wild bird Morbidity/Mortality
Missouri Cass 12/31/2025 1/6/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality
Missouri Unknown 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Jackson 12/17/2025 12/31/2025 EA/AM H5N5 Ross's goose Wild bird Morbidity/Mortality
Missouri Douglas 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Clay 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri St. Louis 12/8/2025 12/23/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird Morbidity/Mortality

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality

Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality
Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Virginia Fairfax 1/20/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird Hunter harvest
Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest

50 of 50 entries (filtered from 19,176 total entries)​

https://www.aphis.usda.gov/livestoc...n-influenza/hpai-detections/wild-birds?page=1

 

[Pathfinder]

As of April 24, 2026, Aphis has added 3 more H5N5 entries in Massachusetts​ and removed one in Pennsylvania, bringing the total to 52.

Sorted by state​

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: April 24, 2026

​
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method​

Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality
Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird Morbidity/Mortality

Iowa Story 12/15/2025 12/23/2025 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird Morbidity/Mortality

Massachusetts Barnstable 2/10/2026 4/6/2026 EA/AM H5N5 Red-shouldered hawk Wild bird Morbidity/Mortality
Massachusetts Barnstable 3/9/2026 4/6/2026 EA/AM H5N5 Hooded merganser Wild bird Morbidity/Mortality
Massachusetts Nantucket 1/20/2026 4/6/2026 EA/AM H5N5 Snowy owl Wild bird Morbidity/Mortality
Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird Morbidity/Mortality
Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird Morbidity/Mortality
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird Morbidity/Mortality
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird Morbidity/Mortality

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird Morbidity/Mortality

Mississippi Tallahatchie 12/10/2025 12/19/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

Missouri Jefferson 12/10/2025 1/23/2026 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Cass 12/31/2025 1/6/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality
Missouri Holt 12/31/2025 1/6/2026 EA/AM H5N5 Greater white-fronted goose Wild bird Morbidity/Mortality
Missouri Clay 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Douglas 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri Jackson 12/17/2025 12/31/2025 EA/AM H5N5 Ross's goose Wild bird Morbidity/Mortality
Missouri Unknown 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality
Missouri St. Louis 12/8/2025 12/23/2025 EA/AM H5N5 Snow goose Wild bird Morbidity/Mortality

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird Morbidity/Mortality

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird Morbidity/Mortality

Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Virginia Fairfax 1/20/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird Morbidity/Mortality

Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird Hunter harvest
Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird Hunter harvest​

... 52 entries (filtered from 19,386 total entries)

https://www.aphis.usda.gov/livestoc...n-influenza/hpai-detections/wild-birds?page=1

 

[Pathfinder]

As of June 22, 2026, Aphis has added 2 more H5N5 entries (Mississippi and Massachusetts), bringing the total to 54.

Sorted by state​

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: June 22, 2026
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

​Connecticut New London 2/25/2025 7/2/2025 EA H5N5 Turkey vulture Wild bird

Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird
Florida Brevard 11/29/2025 12/18/2025 EA/AM H5N5 Black scoter Wild bird

Iowa Story 12/15/2025 12/23/2025 EA/AM H5N5 Canada goose Wild bird

Maine York 5/23/2023 12/2/2023 EA H5N5 Herring gull Wild bird

Massachusetts Barnstable 2/10/2026 4/6/2026 EA/AM H5N5 Red-shouldered hawk Wild bird
Massachusetts Nantucket 1/20/2026 4/6/2026 EA/AM H5N5 Snowy owl Wild bird
Massachusetts Barnstable 3/9/2026 4/6/2026 EA/AM H5N5 Hooded merganser Wild bird
Massachusetts Barnstable 3/14/2026 4/6/2026 EA/AM H5N5 mixed Great black-backed gull Wild bird
Massachusetts Bristol 2/27/2025 8/1/2025 EA H5N5 Black vulture Wild bird
Massachusetts Barnstable 4/25/2025 8/1/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Common eider Wild bird
Massachusetts Barnstable 2/7/2025 8/1/2025 EA H5N5 Red-breasted merganser Wild bird
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird
Massachusetts Essex 4/4/2025 7/30/2025 EA H5N5 Common raven Wild bird
Massachusetts Nantucket 2/7/2025 7/30/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 1/21/2025 6/24/2025 EA H5N5 American crow Wild bird
Massachusetts Barnstable 2/8/2025 6/5/2025 EA H5N5 Bufflehead Wild bird
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Sanderling Wild bird
Massachusetts Barnstable 10/21/2024 4/28/2025 EA H5N5 Great black-backed gull Wild bird
Massachusetts Middlesex 12/12/2023 9/20/2024 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 3/16/2024 6/4/2024 EA H5N5 Red-tailed hawk Captive wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Middlesex 5/3/2024 6/4/2024 EA H5N5 Turkey vulture Wild bird
Massachusetts Middlesex 5/1/2024 6/4/2024 EA H5N5 Turkey vulture Captive wild bird
Massachusetts Barnstable 1/18/2024 3/1/2024 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Barnstable 2/8/2023 5/26/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird
Massachusetts Nantucket 3/17/2023 5/26/2023 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable 2/3/2023 2/14/2023 EA H5N5 Great black-backed gull Wild bird
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Plymouth Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird
Massachusetts Barnstable Unknown 2/14/2023 EA H5N5 Great black-backed gull Captive wild bird

Michigan Leelanau 5/29/2025 7/30/2025 EA H5N5 Turkey vulture Wild bird

Mississippi DeSoto 12/6/2025 5/1/2026 EA/AM H5N5 Ross's goose Wild bird
Mississippi Tallahatchie 12/10/2025 12/19/2025 EA/AM H5N5 Snow goose Wild bird

Missouri Jefferson 12/10/2025 1/23/2026 EA/AM H5N5 Snow goose Wild bird
Missouri Holt 12/31/2025 1/6/2026 EA/AM H5N5 Greater white-fronted goose Wild bird
Missouri Cass 12/31/2025 1/6/2026 EA/AM H5N5 Canada goose Wild bird
Missouri Douglas 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird
Missouri Clay 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird
Missouri Jackson 12/17/2025 12/31/2025 EA/AM H5N5 Ross's goose Wild bird
Missouri Unknown 12/17/2025 12/31/2025 EA/AM H5N5 Snow goose Wild bird
Missouri St. Louis 12/8/2025 12/23/2025 EA/AM H5N5 Snow goose Wild bird

New Jersey Cape May 9/5/2025 9/12/2025 EA H5N5 Peregrine falcon Wild bird

New York Suffolk 3/20/2023 3/28/2023 EA H5N5 Great black-backed gull Wild bird

Pennsylvania Allegheny 1/7/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird

Virginia Fairfax 1/20/2026 2/5/2026 EA/AM H5N5 Canada goose Wild bird

Wisconsin Oconto 11/13/2025 12/4/2025 EA/AM H5N5 Lesser scaup Wild bird
Wisconsin Oconto 11/14/2025 12/4/2025 EA/AM H5N5 Mallard Wild bird
Wisconsin Brown 11/16/2025 12/4/2025 EA/AM H5N5 Greater scaup Wild bird
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird
Wisconsin Oconto 11/8/2025 11/21/2025 EA/AM H5N5 Lesser scaup Wild bird​

... 54 of 54 entries (filtered from 19,513 total entries)
​

https://www.aphis.usda.gov/livestoc...n-influenza/hpai-detections/wild-birds?page=1