This isn't a great picture, but is one of few that shows the structural colour --magenta, I would say--of the male's gorget and forehead feathers.
Another sub-par nuthatch picture.
As I was watching the hummingbird, I could here in the distance the "ank ank ank" of a Red-breasted Nuthatch. I found the bird, hassling the pair of chickadees I wrote of a few days ago. They were still working on their nest, with no help from nuthatch, who several times landed next to their hole when one was inside, and offered a noisy opinion. I wondered, was the nuthatch trying to claim the nest? A short search didn't provide much about nuthatch-chickadee nest competition, but I did find reference to an interesting paper that described co-nesting by Mountain Chickadees and Red-breasted Nuthatches, in which both chickadee and nuthatch nestlings shared a nest and were tended by both chickadee and nuthatch parents. And they all fledged. Tempting to draw a lesson from that.