Are there no more dead trees?

After two weeks of busy mornings (swim lesssons, trips to Gainesville, REACH, blueberry picking, etc) that had us out of the house by 8 AM and packed with so many needed items, it has been so pleasant to be able to get up and go for a neighborhood walk - like we used to do consistently over a year ago. The boys have awesome walking sticks widled by Grandpa and they have been very useful (especially on hikes in the woods to clear our way from spider webs). This week we have been able to get out every morning by 8:25 and do our mile walk (from Bismark to Rockerfeller and back). On Monday we visited with our walking neighbors - Mr. Bob, Ms. Lynne, Mr. Mike, and Ms. Ginger. As usual, we notice the bird calls and watch for critters. This week we have been amazed by a woodpecker. On Tuesday we heard the sounds of a woodpecker creating a new home. We listened and watched and found this woodpecker pecking at the very top of a power pole. Now this may be a normal occurance but for us, it was really interesting. After some time of pecking, it gave up and moved on, as did we. On our walk this morning, I happen to muse aloud that maybe we'd see the woodpecker again. Sure enough, a little further down the road than the first spotting, we found a woodpecker, again pecking on a power pole. Two other birds (unsure of their type) we perched on the power line watching. Other birds were chatting to each other from neighboring trees. The woodpecker stayed there for a long time, longer than we stayed to watch. So this makes me wonder...are there no more dead trees for these birds? Are we cutting up the dead trees on our properties so fast that no one has time to stake a claim and move in? Are the power poles just an easier find?