US - Avian influenza H5N5 in wild birds 2023-2025

[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

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

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

29 entries (filtered from 15,709 total entries)


https://www.aphis.usda.gov/livestock...ons/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/livestock-poultry-disease/avian/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/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds

[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/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds

[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.