Its a serious question. Most everywhere I look lately the trees are dead. Just bare sticks standing, or laying down. Like the bare bones of a long dead skeleton. Maybe the decade of extreme wet years we had killed some. Others I just don't know. A lot of my evergreens have dried out and dead lower branches that I have cut off. Needles all over the ground as the higher ones dry out and fall. Some are dead right to the top and only waiting to fall in the next big wind.
Cutting dead poplars off where they have fallen on the fences is a yearly task. All summer and fall. The past few years have been very dry so maybe that killed some.
Disease? Herbicide drift? I look back on photos I took ten years ago and marvel at the thick impenetrable walls of poplar bushes all over the farm. Now, a lot of dead sticks that are going to fall. I miss them. Will they grow back? Probably. Poplars are like a weed when you don't want them to grow. Hopefully soon.