ThinkingAfield.org

March 12, 2025

Washtenaw is now the 15th Michigan county where chronic wasting disease has been identified in the wild deer population, according to the Michigan Department of Natural Resources. An adult buck found acting ill in Salem Township recently tested positive for CWD.

The Michigan State University Veterinary Diagnostic Laboratory, which works with the DNR to identify CWD in Michigan’s wild deer herd, confirmed the CWD finding. The U.S. Department of Agriculture’s National Veterinary Services Laboratory, in Ames, Iowa, also confirmed the test result.

CWD is a fatal neurological disease that affects white-tailed deer, elk and moose. The disease is chronic, slow developing, and spreads slowly across the landscape. To date, CWD has also been detected in wild deer in the following Michigan counties: Clinton, Dickinson, Eaton, Gratiot, Hillsdale, Ingham, Ionia, Isabella, Jackson, Kent, Mecosta, Midland, Montcalm and Ogemaw.

Prior to focused CWD surveillance in Washtenaw County, voluntary sampling between 2016 and 2019 resulted in 824 deer tested. In 2021 and 2022, focused CWD surveillance efforts were conducted to gather additional samples, and 875 more deer were tested. While this is the first positive in Washtenaw County, 39 deer in neighboring Jackson County have tested positive for CWD, through combined DNR collections and direct hunter submissions to the MSU Veterinary Diagnostic Laboratory.

“The expansion of chronic wasting disease to Washtenaw County is consistent with the slow spread we’ve seen throughout Michigan,” said Chad Fedewa, acting DNR deer, elk and moose management specialist. “This case was identified thanks to a resident who saw a deer that appeared ill and reported it to us. Every piece of data is valuable in helping us make science-based decisions to support Michigan’s wildlife. We are grateful that Michigan residents value deer and stay engaged in this way.” Read more

A male American Kestrel surveys the area outside a big nest box that a pair has adopted for the nesting season. Big nest boxes supplement the lack of safe, natural nesting cavities and help to reduce competition for nest sites.

A female Wood Duck perches atop a big nest box during an incubation break. You can position a big nest box for ducks near a wetland, or in the midst of a marsh.

For another level of birding fun, consider adding a big nest box to your property, or to a nearby park or nature center – with permission of course. Big nest boxes provide additional, safer nesting locations for large cavity nesting birds, including such impressive birds as Screech Owls, American Kestrels, Wood Ducks, and Hooded Mergansers. Large natural cavities suitable for these nesting birds are in especially short supply, and we can provide safer nesting options for larger cavity nesting birds by providing Big Nest Boxes with all the right features.

The larger cavity nesting birds – owls, kestrels, and ducks – primarily rely on large natural holes in tree trunks and large cavities in branches, but these are not always safe from predators like raccoons, large snakes, and tree squirrels. Large woodpecker cavities can be used by small owls and kestrels, but ducks can only use larger natural cavities that have a bigger entrance hole. Read more