"What a thousand acres of Silphiums looked like when they tickled the bellies of the buffalo is a question never again to be answered, and perhaps not even asked." -Aldo Leopold
I happened to notice that I had a few in the queue that featured the color yellow. In most of them the yellow is featured on the bird, but in the one above the yellow is of a flowering plant, perhaps yellow rocket (Barbarea vulgaris), in the foreground and background.