One loon

Last evening, I went on a boat ride with Ellen and Jan, and Colleen and Richard. A single loon was floating in the middle of the lake. It seemed quite unperturbed by the boat traffic around it. We weren't close enough to get a good photo. I didn't see any loons this afternoon before we headed back to the city.
This evening on the internet I came across this long article by the US Fish and Wildlife Service. It includes references to loon monitoring in Wisconsin and Minnesota. This piece should help answer a lot of questions I have about these wonderful birds.