A contagious bird flu is circulating widely among wild bird populations in Michigan, with over 300 dead birds discovered in five counties. The virus, known as highly pathogenic avian influenza (HPAI), has been found in geese and other waterfowl, causing significant mortality.
Preliminary testing suggests the virus is responsible for the die-offs, which include Canada geese, mallards, and swans. While serious impacts to overall duck, goose, or swan populations are not expected, local areas near positive test results may see a decline in bird populations.
The Michigan Department of Natural Resources (DNR) has reported numerous cases of bird flu, including bald eagles and colony nesting birds like terns and cormorants. The agency recommends residents report die-offs of six or more wild birds to their online Eyes in the Field tool.
The virus spreads through fecal droppings or nasal discharge of an infected bird, contaminating the environment. To prevent transmission, residents are advised to clean backyard bird feeders every two weeks with bleach-water solution and take precautions when handling dead birds.
While federal health officials maintain bird flu presents a “low” risk to humans, people can contract it through their eyes, nose, or mouth when the virus is in the air or through contact with a contaminated surface. Private property owners are responsible for cleaning up dead wild birds on private property and should follow DNR guidelines for handling and disposing of carcasses.
The DNR has reported similar outbreaks in recent years, including in 2022, but this year’s mortality rates appear to be lower. Officials recommend treating every wild bird as though it has a disease and taking necessary precautions to prevent transmission.
Source: https://www.mlive.com/environment/2025/02/hundreds-of-dead-wild-birds-found-in-michigan-as-avian-flu-rips-through-flocks.html