There are over 200 species of woodpeckers. They are very territorial and have a route and routine that they developed in their search for food, resting areas, safe hideouts from predators in an emergency. The woodpeckers pair off and take turns watching the nest and then take turns feeding the young. I have personally studied woodpeckers for 7 years and have observed some of their habitats.
For example when we've filled in holes in preparation to apply the "Protectors Shield - Protective Coating System", we observed 3 woodpeckers trying to make a hole where the old one was. Just like "DPW" crews the 3 of them were taking turns pecking and keeping lookout while trying to regain access to that old hole. I have also seen woodpeckers making a new hole for a blackbird after we closed the blackbirds hole up. Amazing how they communicate and will work together to help one another.
Any questions you may have please send them to us and we will get to them as soon as we can. We have provided links for more information about woodpeckers from many certified specialists including Cornell University and the University of Colorado Ornithology Departments. Look under our links section on our website for more information.