For immediate release: November 24, 2025

Sick domestic bird calls: 800-292-3939

Media contact: Jennifer Holton, 517-284-5724

Highly Pathogenic Avian Influenza Detected in Ontonagon County Flock

LANSING, MI — Following an investigation by the Michigan Department of Agriculture and Rural Development (MDARD), the Michigan State University Veterinary Diagnostic Laboratory has detected the presence of highly pathogenic avian influenza (HPAI) in a backyard flock from Ontonagon County. This is the first case of HPAI in poultry from an Ontonagon County flock since the virus was first detected in Michigan in 2022, and the first case in Michigan’s Upper Peninsula since the spring of 2022 when four infected backyard flocks were found in Menominee County. Adhering to biosecurity measures and using personal protective equipment (PPE) continue to be vital in helping ensure the health of Michigan’s domestic animals and the general public.

HPAI is a highly contagious virus that can be spread in various ways from flock to flock, including by wild birds, through contact with infected animals, by equipment, and on the clothing and shoes of caretakers.

According to the U.S. Centers for Disease Control and Prevention, the public health risk associated with avian influenza remains low. As a reminder, people should properly handle and cook all poultry and eggs.

Whether it’s a few backyard birds or a large commercial flock, following a few key steps is fundamental to protecting the health and vitality of Michigan’s domestic birds:

• Prevent contact between domestic and wild birds by bringing them indoors or ensuring their outdoor area is fully enclosed.
• Wash your hands before and after handling birds as well as when moving between different coops.
• Disinfect boots and other gear when moving between coops.
• Do not share equipment or other supplies between coops or other farms.
• Clean and disinfect equipment and other supplies between uses. If it cannot be disinfected, discard it.
• Use well or municipal water as drinking water for birds.
• Keep poultry feed secure to ensure there is no contact between the feed/feed ingredients and wild birds or rodents.

MDARD is continuing to work diligently with local, state, and federal partners to quickly respond to reports of sick domestic animals to best mitigate the spread of HPAI and provide outreach.

Reporting Possible Cases

For Domestic Birds

Domestic bird owners and caretakers should watch for multiple sudden deaths in the flock, a drop in egg production, a significant decrease in water consumption, diarrhea, sneezing/coughing, or an increase in sick birds. If avian influenza is suspected in domestic birds, contact MDARD immediately at 800-292-3939 (daytime) or 517-373-0440 (after-hours).

For Wild Birds

If anyone notices what appears to be unusual or unexplained deaths among wild bird populations, please report these cases to the Michigan Department of Natural Resources (DNR) by:

• Using the DNR’s Eyes in the Field app. Choose the “Diseased Wildlife” option among the selections for “Observation Forms.”
• Calling the DNR Wildlife Disease Laboratory at 517-336-5030.

Stay Up to Date

Subscribe to receive email notifications by visiting MDARD’s Media Room website and clicking on the “Avian Influenza” link. After entering a valid email address, subscribers will receive updates and alerts regarding the status of avian influenza in Michigan whenever there are new developments to report. Additional resources can also be found at Michigan.gov/BirdFlu.

For more information on proper use of personal protective equipment to protect against avian influenza, please visit the Michigan Department of Health and Human Services’ website.

More information on avian influenza and how to protect flocks through preventative measures can be found on the U.S. Department of Agriculture’s website.

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