What are woodpeckers, and what makes them a problem here?
A woodpecker on the house is a genuinely different kind of pest problem, and understanding why is the whole key to solving it. Unlike a raccoon in the attic or mice in the walls, the woodpecker isn’t trying to live inside your home — it’s using the outside of your building as a tool. It hammers your siding to send a signal, to dig a nest, or to eat, and which of those three it’s doing determines everything about how you stop it. Treat the wrong cause and the bird keeps coming back, because you never addressed the reason it was there.
There’s a second fact that shapes every woodpecker job in a way most pests don’t: native woodpeckers are federally protected. Under the Migratory Bird Treaty Act, it is illegal to kill, trap, or harm them, or to destroy an active nest, without a federal permit. That isn’t a technicality — it means the entire toolkit is legal deterrence, exclusion, insect control, and repair, never removal in the sense of trapping or dispatching the animal. Anyone who offers to “get rid of” a woodpecker by killing it is offering to break federal law and, worse, isn’t addressing what actually drew the bird. BugBoss works entirely inside the law, and it happens that the lawful approach is also the effective one.
The Clintonville area is prime woodpecker country. This is a landscape of woodlots, field-and-forest edges, and older buildings, and a great deal of the housing and farm stock is clad or trimmed in cedar and other wood siding — a material woodpeckers find both easy to drill and, frequently, full of the insects they eat. Put a wood-sided house at a woodland edge and you’ve built something close to ideal woodpecker habitat. Because BugBoss does both pest control and wildlife work, we can do the thing most bird-scaring outfits can’t: find and treat the wood-boring insects that are often the real reason the bird won’t leave.
Identification: which woodpecker, and why it matters
Wisconsin hosts several woodpecker species, and telling them apart helps because their motives — and the right response — differ.
The downy woodpecker is the small, common black-and-white bird (about six inches) seen at feeders and on siding year-round; the nearly identical but larger hairy woodpecker does the same. Both drum and both dig for insects. The red-bellied woodpecker, barred black-and-white with a red cap, is increasingly common and a frequent house-drummer. The northern flicker is a large brownish woodpecker that spends a lot of time feeding on the ground but will excavate sizable nest and roost cavities in siding — flickers are behind many of the big, ragged holes people find. The pileated woodpecker, crow-sized with a flaming red crest, is our largest and can do dramatic damage when it targets a structure, though it more often works dead trees. The red-headed woodpecker rounds out the resident cast.
The one whose damage is unmistakable is the yellow-bellied sapsucker. It drills neat, evenly spaced horizontal rows of shallow holes — sap “wells” it returns to for the sap and the insects the sap attracts. If you’re looking at tidy lines of small holes in siding, trim, or a favorite tree, that’s a sapsucker, and it calls for a different response than a flicker excavating a nest hole.
The reason species ID matters is that it hints at motive. A downy or hairy hammering intermittently at scattered spots is likely feeding on borers. A flicker or pileated digging a deep, rounded cavity is likely nesting or roosting. A bird pounding rhythmically on the metal chimney cap or a gutter at dawn in May is drumming for territory. And rows of holes mean sapsucker feeding. Each points down a different path.
Wisconsin behavior: the three reasons woodpeckers hit houses
Every woodpecker-on-a-house problem traces back to one of three behaviors, and sorting out which one you have is the diagnostic that makes the whole job work.
Drumming (territorial signaling). In spring, male woodpeckers drum — rapid, rhythmic hammering — to announce their territory and attract mates. The point is volume and resonance, not digging, so they seek out the loudest surfaces they can find: metal flashing and chimney caps, gutters and downspouts, TV antennas, hollow-sounding trim, vents, and thin resonant siding. Drumming is startling, especially at first light, but it usually does little structural damage because the bird isn’t trying to penetrate the surface — it’s trying to make noise. The catch is that a drummer can still dent and scar metal and fixtures, and the behavior is maddening at 5 a.m. It’s tied to the breeding season and tends to fade as spring gives way to summer.
Excavation (nesting and roosting). Woodpeckers are cavity nesters. In spring they dig rounded nest holes, and in fall they excavate roost cavities for winter shelter. On a house, they’ll target soft, punky, or rotted wood — aged cedar, weathered fascia and trim, wood siding on the shaded or damp side of a building — and produce a clean-edged, deep hole, often with a pile of wood chips below. This is destructive: a nest cavity means weeks of enlargement, and an open cavity invites water and rot. Fall roost-hole excavation is a second, quieter season of this same damage.
Feeding (the important one). Woodpeckers eat wood-boring insects — beetle larvae, carpenter ants, carpenter bees, and other borers — and they are extraordinarily good at detecting them, hearing the larvae moving inside the wood and drilling precisely to reach them. When a bird returns obsessively to the same area and digs deep, ragged, irregular holes, it is almost always mining insects it can hear in the siding or trim. This is the behavior people most misunderstand, because they focus on the bird when the bird is actually pointing at an infestation. Persistent, localized, ragged pecking is a diagnostic sign of wood-boring insects. Deter the bird without treating the insects and the pecking continues, because the food is still there.
When are woodpeckers active in Northeast Wisconsin?
Woodpecker pressure on Northeast Wisconsin homes concentrates in two windows, with a low background hum in between.
Spring (April–June) is the loud season. Territorial drumming peaks as males stake out breeding territory — this is when the dawn hammering on the chimney cap and gutters drives people out of bed — and nest excavation happens as pairs dig cavities. Damage from spring is a mix of cosmetic scarring on resonant surfaces and real cavity damage in soft wood.
Summer (July–August) is relatively quiet on the structural front once nesting winds down, though feeding on borers can continue any time the birds detect larvae, and young birds dispersing may test new surfaces.
Fall (September–November) is the second peak. Birds excavate roost holes for winter shelter, and feeding activity on wood-borers often intensifies as the birds work harder for food heading into cold weather. Fall damage is easy to overlook because it lacks the noisy drumming of spring, but the excavation is just as real.
Winter (December–March) sees resident downy, hairy, red-bellied, and pileated woodpeckers stay active. They’ll use roost cavities they dug in fall and continue feeding on insects in wood and at feeders, so a fresh hole can appear on a mild winter day.
What draws woodpeckers to your house specifically
The mix of building materials and landscape around Clintonville makes woodpecker conflicts routine rather than rare.
Cedar and wood siding. This is the big one. Cedar, rough-sawn, board-and-batten, and other wood sidings and trims are soft enough to drill easily, weather into textures birds find workable, and — most importantly — host the wood-boring insects woodpeckers feed on. Stained and unpainted cedar is especially prone to harboring carpenter bees and beetle larvae. A house or barn clad in wood is offering the bird both an easy substrate and, often, a meal inside it.
A wood-borer problem in the wood. Where carpenter ants, carpenter bees, or wood-boring beetles are active in siding, fascia, or trim — common in the moisture-prone wood of older buildings — woodpeckers follow. The insect problem and the woodpecker problem are frequently the same problem, and the bird is the symptom that reveals it.
Woodland edges. The region’s defining field-and-forest edge habitat is where woodpeckers live. A home or farmstead set against a woodlot, tree line, or river corridor sits right in their territory, with resident birds passing over the buildings every day.
Resonant surfaces. Metal chimney caps, flashing, gutters, downspouts, vents, and antennas give spring drummers the loud billboards they want, so houses with a lot of exposed metal trim draw more drumming.
Older, weathered buildings. Aging fascia, soft rotted trim, and weathered wood siding on the area’s pre-war farmhouses, barns, and outbuildings give excavators the soft wood they prefer for cavities and give borers a foothold that then draws feeders.
Signs and how to read them
Reading the pattern of damage tells you the cause, which is the whole game.
Neat rows of shallow holes = sapsucker feeding on sap.
Deep, ragged, irregular holes clustered in one area, revisited repeatedly = feeding on wood-boring insects. Look for the bird returning to the same spot day after day; that persistence is the tell that there’s food in the wood.
A single clean-edged, rounded, deep cavity, often with wood chips below = nest or roost excavation.
Loud rhythmic hammering on metal or hollow surfaces, especially at dawn in spring, with little actual penetration = territorial drumming.
Alongside the damage itself, you’ll often hear the bird (the drumming or the tapping) and see it working the wall. Where feeding is the cause, you may also find the supporting signs of the insect problem — carpenter bee entry holes (round, dime-sized), sawdust-like frass, or carpenter ant activity — near the pecked area. Water staining, soft or punky wood, and existing rot around the damage point to the moisture that invites both borers and excavators.
The risks and the damage
Woodpecker damage isn’t a health hazard the way a raccoon latrine is, but the structural and financial toll is real and compounding.
Water intrusion and rot. Every hole and cavity is a way in for water. Once moisture gets behind siding or into fascia and trim, you get rot — which softens the wood further, which attracts more borers, which draws more woodpeckers. Left unrepaired across seasons, a few holes become a maintenance problem that spreads.
Cavity damage. A nest or roost cavity is significant localized destruction — a fist-deep hole in siding or fascia, often enlarged over weeks, with the surrounding wood weakened. On fascia and soffit, that can open the building envelope to other wildlife.
Recurring, spreading damage. The defining feature of a woodpecker problem is that it repeats. Because the bird is responding to a cause — resonance, soft wood, or insects — it comes back and often works new spots, so a single unrepaired, untreated problem tends to grow across a wall and across seasons.
The insect problem underneath. Where feeding is the cause, the woodpecker damage is a warning sign of an active wood-borer infestation that is itself damaging your structure. Ignoring it means letting both the birds and the insects keep working. This is precisely where the value of a combined pest-and-wildlife company shows up.
Cosmetic and quality-of-life costs. Dented flashing, scarred cedar, and dawn drumming that wakes the household are real nuisances even when the structural stakes are lower.
Why doesn’t DIY work on woodpeckers?
People throw a familiar arsenal at woodpeckers, and most of it fails for the same underlying reason: it treats the bird instead of the cause.
Static decoys don’t hold up. Plastic owls and rubber snakes are the most-purchased and least-effective woodpecker deterrents. Birds habituate within days once they learn the decoy never moves or threatens. A lone owl on the porch rail does essentially nothing after the first week.
Shooing the bird off treats the moment, not the cause. Chasing a woodpecker away feels productive, but if the resonant surface, the soft wood, or the insects are still there, the bird — or the next one — returns on its own schedule.
Single gimmicks used alone tend to just move the bird a few feet. One reflective strip, one balloon, one covered patch: the bird shifts over and keeps working the same wall, because the attractant across the rest of the surface is unchanged.
Repairing holes without addressing the cause invites a repeat. Patch and paint over a feeding hole while the borers are still inside, and the bird reopens it or opens a new one nearby.
And then there’s the legal trap. Because native woodpeckers are federally protected, the frustrated homeowner who reaches for a lethal fix — or destroys an active nest — is breaking federal law and exposed to penalties, all while still not fixing the reason the bird was there. The single most common DIY failure is treating a woodpecker as a bird to be eliminated rather than a symptom to be read.
The deepest failure of all is missing the insect connection. Without the ability to inspect for and treat wood-boring insects, most DIY (and most bird-only “control”) never touches the actual cause of persistent feeding damage.
The BugBoss process: legal, cause-first deterrence
We approach woodpeckers as a diagnosis-then-treatment problem, entirely within the protections that cover these birds.
Inspect and diagnose the cause. We read the damage pattern to determine whether you’re dealing with drumming, excavation, or feeding — and, where feeding or excavation is at play, we inspect the wood for the carpenter bees, carpenter ants, or wood-boring beetles that may be driving it. This diagnosis is the step that everything else depends on, because the fix for a drummer is different from the fix for a bird mining borers.
Treat the underlying insect problem. When wood-boring insects are the draw, we treat them — this is core pest control work, and it’s the piece that bird-scaring outfits can’t do. Remove the food source and you remove the reason a feeding woodpecker won’t leave. Where carpenter ants or carpenter bees are in the siding, addressing them is often the true solution to the woodpecker.
Apply legal deterrence to the target area. We deter the bird from the specific spot it’s using, with a combination approach: visual deterrents that move and flash, physical barriers such as lightweight netting stood off the wall or covers over the worked area, and, for drummers, damping the resonant surfaces that make the site attractive. Combination and correct placement are what make deterrence hold, rather than a single gimmick the bird routes around.
Advise on repair. We guide the repair of holes and cavities so water and further insects are shut out and the site is made less inviting — repair and cause-removal together, since either alone tends to fail.
Respect the law throughout. No native woodpecker is trapped, killed, or has an active nest destroyed. Everything we do is legal deterrence, exclusion, insect control, and repair — which, again, is not just the lawful path but the effective one.
This is wildlife and pest work handled together, which is exactly what a woodpecker problem needs. On farm buildings it often folds into a broader dairy farm pest program, and where excavation has opened the building envelope, it connects to attic and roofline exclusion.
Prevention and long-term protection
Keeping woodpeckers off a building is about making it a poor target on all three fronts — resonance, soft wood, and insects.
Keep wood-borers out of the wood. This is the most important preventive step for feeding damage. Stay ahead of carpenter ants, carpenter bees, and beetle borers in siding, fascia, and trim, and address the moisture that lets them in — because a house free of wood-borers gives feeding woodpeckers no reason to drill.
Maintain the wood. Keep siding and trim sound, sealed, and painted or stained; replace soft, rotted, or punky wood promptly. Well-maintained, finished wood is both less appealing to excavators and less hospitable to borers. On new or re-siding projects, understand that bare and stained cedar carries more woodpecker risk than sealed or non-wood options.
Damp the resonant surfaces. Secure and pad loose metal flashing, chimney caps, gutters, and downspouts so spring drummers lose their favorite loud spots.
Deter early and on the spot. At the first sign of repeated pecking, deter the specific area with moving visual deterrents and, where warranted, netting or covers, before the bird establishes a habit. Deterrence is far easier before a bird has locked onto a nest cavity or a rich feeding zone.
Repair promptly. Close holes as they appear to shut out water, prevent rot, and remove the easy re-entry an open hole offers.
Because woodpecker feeding so often signals an insect problem, the single best long-term protection is keeping the wood of your home and outbuildings free of borers — which is ordinary, ongoing pest control done well.
When should you call BugBoss about woodpeckers?
Call when a woodpecker is repeatedly working the same area — that persistence usually means insects in the wood, and it’s the situation most worth diagnosing early. Call when you find fresh cavities or ragged holes in siding, fascia, or trim, before water and rot compound the damage; when spring drumming on your metal trim has become intolerable; and when you see the tidy rows of sapsucker holes or the round entry holes and frass of carpenter bees near pecked wood. Call in fall too, when quieter roost-hole excavation is easy to miss until the damage is done.
Don’t reach for a lethal fix — it’s federally illegal and it doesn’t address the cause — and don’t count on a plastic owl to solve it. The productive move is an inspection that tells you why the bird is there, followed by legal deterrence, treatment of any insect problem, and proper repair.
Most bird-deterrent outfits can’t treat the wood-boring insects that drive persistent woodpecker damage, and most pest-only companies won’t touch the bird side at all. BugBoss does both, from our storefront at 600 S. Main St. in Clintonville, serving Shawano, Waupaca, Antigo, and the rural towns and farms around them. Call 866-BUGBOSS, or request a quote. No long-term contract, no cancellation fee, and you work directly with Brian.
Source: federal migratory bird protections and Wisconsin Department of Natural Resources wildlife regulations. Reviewed by Brian Zahringer, WI Commercial Applicator #103689 — August 2026. Rules change; confirm current requirements before acting.