When homeowners notice a hollow or wound in a tree, the instinct is often to fix it: to fill the cavity with something that ...

Rows of uniform holes, either horizontal (most commonly) or vertical, might look like an insect attack, but they are more likely caused by a bird with an unusual name – the yellow-bellied sapsucker ...

When tiny holes appear on a tree, they often tell a story. These could either be due to harmless nesting activity of some animals, or they could be insect infestations that threaten a tree's survival.