One day during Christmas week, I was watching the woodpeckers in the bird tree as they postured by hopping sideways with their necks extended. In short, they were behaving very aggressively towards each other. They were trying to keep each other from the suet feeders on the tree. I have chosen only four photographs for this post of the many that I got of their squabble. They did fly at each other but never truly attacked each other, thank goodness. Since that day I have now seen female woodpeckers have less violent confrontations about the suet feeders.