We are now having nights in the mid-30s, so leaves are turning and the seedheads are ripening on the Echinacea and Rudbeckia. Although these plants are swaying right up to the edge of the sidewalk, the goldfinches have been very interested and hungry—and very hard to photograph with a phone. They are nervous little creatures.

Young goldfinches need fuel. According to Audubon, goldfinches do overwinter in Michigan, so they will need food in the coming months. They are also vulnerable to our increasingly warm climate. Michigan will be too far south for them in the summer by the time the average annual temperature increases by 3°C, which at current rates could occur by 2080.
The goldfinch photograph is roughly 25% of the area of a larger photograph which was taken fully zoomed, so the focus is not its best—a telephoto lens on a real camera would allow for much better results—but it captures the reason to leave the seedheads on for a while.