Adult male American Redstarts (Setophaga ruticilla) like this one are such a symbol for the season to me. Yes, I can hear their spring song in my mind, especially after seeing so very many in the Chautauqua-Allegheny region this year. Nevertheless, they were usually one of the first and most obvious migrants I saw in late August and September each year when I was a beginning birder, getting me excited for a busy fall migration. Their Halloween tone around the beautifully decaying vegetation helps, too.
