Related to the Crow, and Raven family, these guys seem to have all the usual family traits of intelligence, but appear to have usurped all the bright colour plumage. The woods this time of year is filled with them despite the cold ,wet, windy weather. These photos were taken at the entrance to one of my trails where I throw a few sunflower seeds every so often. They then will accompany me for a short distance before leaving me with a few squawks, to return to wherever.
The vivid blue is not in the feathers themselves , but results from light distortion as a result of the unique structure of the feather. This bird as well as Northern Flicker uses ant secretions to groom its feathers. Amazing, don't you think?