The Red Head and the Swan

Kellogg Bird Sanctuary (a Michigan State University facility, on land donated by W.K. Kellogg), very near Gull Lake, not far from Battle Creek.

The smaller bird seems to be a redhead duck (or is it a canvassback?)--the sanctuary attracts thousands of ducks, in many varieties.
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Had a friend who worked at the Biological Station (a larger facility which includes the sanctuary); she told tales of watching ducks mistake the ice on Wintergreen Lake for open water, and trying to land. Evidently an ongoing source of entertainment for the staff. The sanctuary is open in winter; perhaps I'll wander down some day and check.