The woodpecker (whatever the species) is telling you over and over and over that the tree or shrub is deathly sick. The tree may look fine to you; but to a bird it's in serious decline. The wood is full of tunneling insects and the tree's sap is abnormally sweet. Both these things attract Sapsuckers and other woodpeckers.
It may be possible to return the tree to health. But it may topple in high wind first.
|Eurasian Collared Dove|