HPAI, commonly known as bird flu, is a highly contagious respiratory disease that causes sickness and sometimes death in birds and mammals. Since December 2024, wild bird mortality cases have increased across the state, particularly among Canada geese, trumpeter swans, and scavenging birds.

The DNR said the bird flu warning is especially important for wild fowl hunters. “While waterfowl hunters are much more likely to encounter wild birds, it’s important for all Michiganders to understand the health risks that bird flu can pose to wildlife, humans and domestic animals,” said Mitch Marcus, DNR wildlife health supervisor.