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Avian influenza updates
Highly pathogenic avian influenza (HPAI) cases are now confirmed in domestic birds, wild birds, and wild mammals throughout most of North America. Since late February 2022, Michigan has experienced die-offs in wild birds and mammals across the state due to HPAI. Monitoring of sick and dead wildlife for HPAI continues and the disease is considered widespread and endemic across Michigan and North America. The Michigan Department of Agriculture and Rural Development continues to take swift action in response to this disease and is closely monitoring and responding to reports of sick domestic birds and HPAI throughout the state. HPAI has caused extensive illness and death in a range of wild bird species across North America. In particular, waterfowl, raptors, scavengers, gulls and terns have been affected. The DNR is focusing its surveillance efforts by prioritizing testing dead birds from die-offs of six or more birds, as well as bald eagles, and abnormal acting hawks, owls, and wild mammals.
Positive Michigan cases of HPAI in wildlife
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The information in the tables below is for wildlife samples with confirmed test results. Not all animals reported from a mortality event are tested, as only a few are needed to confirm the cause of death.
2025Results updated as of 1/30/2025*
County Number positive Jackson 1 Kalamazoo 1 Mackinac 1 Roscommon 1 St. Joseph 1 Washtenaw 1 Total 6 *Additional samples from 2025 pending confirmation.
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2024
Results updated as of 1/30/2025*
County Number positive Allegan 1 Eaton 1 Ionia 31 Isabella 2 Marquette 1 Ottawa 1 Saginaw 1 Total 38 *Additional samples from 2024 pending confirmation.
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2023
County Number positive Alpena 1 Bay 4 Clare 1 Eaton 2 Hillsdale 1 Isabella 4 Oakland 1 Monroe 2 Alger 1 Ionia 1 Saginaw 24 Tuscola 20 Mackinac 1 St. Clair 37 Ingham 1 Chippewa 1 Wexford 2 Baraga 1 Total 105 -
2022
County Number positive Alger 1 Allegan 2 Alpena 3 Antrim 2 Arenac 1 Baraga 3 Bay 15 Benzie 1 Berrien 1 Branch 2 Cass 1 Charlevoix 3 Cheboygan 3 Chippewa 4 Clinton 5 Crawford 1 Delta 7 Dickinson 2 Eaton 7 Gladwin 3 Gogebic 1 Grand Traverse 10 Hillsdale 2 Houghton 1 Huron 2 Ingham 31 Ionia 3 Iosco 4 Iron 3 Jackson 2 Kalamazoo 3 Kent 2 Lapeer 1 Livingston 1 Mackinac 5 Macomb 5 Manistee 2 Mason 2 Mecosta 1 Menominee 1 Midland 4 Missaukee 2 Monroe 4 Montmorency 2 Muskegon 3 Newaygo 2 Oakland 5 Ogemaw 1 Ontonagon 2 Osceola 4 Otsego 3 Ottawa 6 Presque Isle 2 Roscommon 4 Saginaw 6 Sanilac 1 Schoolcraft 1 Shiawassee 1 St. Clair 29 Tuscola 3 Washtenaw 1 Wayne 2 Wexford 2 Total 239