I spent about an hour and a half at Montrose this morning, December 21. It certainly looked and felt like winter, with a thin layer of ice on Lake Michigan all the way to the horizon. As expected for this time of year, diversity was low. I ended up with 25 species, highlighted by a nice adult male Northern Harrier, the continuing female Rusty Blackbird, and hundreds of Common Mergansers. When I think of an emblematic Lake Michigan winter bird, I think of the Common Merganser, a hardy duck that can survive our brutal winters with just a little open water to find fish to eat. Link to my eBird checklist below.