Backyard Confrontation

This afternoon Carol looked out the back window and saw two birds atop our neighbor's tree which all birds seem to love.  One was an American Crow, the other a young accipiter, probably a female Sharp-shinned Hawk (blurry photo below taken through the window).  The crow cawed frequently, perhaps hoping to attract more crows.

Instead it attracted a Pileated Woodpecker which also began vocalizing ("kek, kek, kek").  

Then the woodpecker flew toward the hawk and perched further left in the tree.

The birds stayed in this configuration awhile until the hawk chased the woodpecker off its perch.

This riled the woodpecker into flying around and around the top of the tree screaming angrily before finally departing.  A minute later the crow flew away, and soon after so did the hawk.