It’s not easy to sneak the sun past this guy. He is not Rooster Cogburn.
When the sap runs, sapsuckers notch holes in trees. A number of other birds. Including hummingbirds, feed at those sap wells.
Little Rickie. The four-letter alpha code used by the U.S. Bird Banding Lab is RCKI, which turns the Ruby-crowned Kinglet into Little Rickie.
Please do the same at all the other mile markers, too.