First I've ever seen one of these in the yard. It was a hard little bird to get a shot of, as it doesn't sit still for very long. It was really busy pecking all over in the crevices of the tree bark for something?
One of my favorite birds. I used to have both white and red breasted where I lived in the Oregon Cascades. Have only seen the red breasted ones at my feeders in Idaho so far.
Another note, they also like black oil sunflower seeds. Like chickadee's they will also gather them and store in tree cavities for food on cold snowy days. I saw one yesterday flying off several times.