What Causes Rows of Holes in Trees
What Causes Rows of Holes in Trees What Causes Rows of Holes in Trees? If you’ve noticed neat rows of small holes running up and down your tree trunk, you’re not alone. This pattern is most commonly caused by the Yellow-bellied sapsucker, a type of woodpecker found throughout Wisconsin and the Coulee Region. Sapsuckers drill evenly spaced holes in horizontal or vertical lines to access the tree’s sap. They return to these same rows repeatedly, feeding on both the sap and the insects it attracts. While the pattern can look […]
