I‘ve taken the suet cage with nest-building fibers down since I took this picture, but it’s not too late for one last hatching of American Goldfinches. They breed very late. I‘m seeing young ones now, old enough to have left the nest, but not quite sure where to land on the feeder in order to successfully obtain seeds. This adult male Goldfinches has it completely figured out.

Male American Goldfinch perched on the sunflower feeder.
American Goldfinch (Spinus tristis), male