Woodpeckers usually peck at dead or diseased trees/limbs, but they have also been known to peck at buildings, siding, metal and/or air conditioners. Woodpeckers peck in order to find food, excavate areas for nesting, or create room for food storage. These birds can have two or three broods per year, each with three to six young. This makes bird removal paramount for businesses and homeowners alike.