A week ago the ice on the Fox River pushed all the waterfowl north toward the St. Charles dam, where this squad of redhead ducks hung out with common goldeneyes. Redheads are obviously named for that russet coloring, but their distinguished gray and black back and chest add to their allure. Females are all brown with that similarly round head shape. They migrate through Illinois from the southern states where they winter, with many preferring shallow saltwater lagoons. Thus, these birds are either headed back north or stayed the winter in Illinois thanks to our increasingly mild winters. This species breeds in southeastern Wisconsin, but also across the entire Great Plains, up through Western Canada and into Alaska. They are "diving ducks" that catch and eat their food off the river bottom.