How to Safely Remove Birds from Your Chimney

If you're wondering how do I get birds out of my chimney, the safest and most effective approach is to first confirm bird presence, then wait until the nest is inactive before humanely removing it. Most birds nesting in chimneys are protected species like chimney swifts, so timing and compliance with wildlife regulations are crucial. Attempting to remove active nests or harm birds can result in legal consequences and ethical concerns. The best solution often involves professional wildlife removal experts who specialize in humane extraction and chimney inspections.

Understanding Why Birds Nest in Chimneys

Birds, particularly chimney swifts (Chaetura pelagica), are naturally drawn to vertical, dark, enclosed spaces that resemble hollow trees—their original nesting habitats. As urbanization has reduced access to old-growth forests, these birds have adapted by using chimneys for nesting and roosting. Chimney swifts are migratory, arriving in North America in spring (typically late March to April) and nesting between April and August. During this time, they build small, glued-together nests from twigs and saliva on the inner walls of unused flues.

Other birds such as sparrows, starlings, or even owls may also take up residence, especially if the chimney lacks a cap. Unlike chimney swifts, some of these species may not be federally protected, but they still require careful handling to avoid health risks or structural damage.

Identifying Bird Activity in Your Chimney

Before taking action, it's essential to determine whether birds are actually present. Common signs include:

Chirping or scratching sounds coming from the chimney, especially at dawn or dusk
Droppings accumulating near the fireplace or damper
Nesting materials visible when inspecting the flue
Unusual odors due to decaying organic matter or droppings
Bird sightings entering or exiting the chimney top

To confirm activity, shine a flashlight up the flue or use a chimney inspection camera (available at hardware stores or through chimney sweeps). If you hear chirping or see young birds, the nest is likely active, and removal should be delayed until the birds have fledged.

Legal and Ethical Considerations: Are You Allowed to Remove the Birds?

One of the most important aspects of how to get birds out of your chimney involves understanding federal and state wildlife protections. In the United States, the Migratory Bird Treaty Act (MBTA) protects over 1,000 bird species, including chimney swifts, barn swallows, and many songbirds. This law makes it illegal to disturb, relocate, or destroy active nests, eggs, or young without a permit.

Violating the MBTA can result in fines up to $15,000 and six months in prison per violation. Therefore, attempting to remove birds while they are nesting can lead to serious legal repercussions. The key rule: never remove a nest with eggs or chicks unless there is an immediate safety hazard and proper authorization is obtained.

Exceptions may apply for non-protected species like European starlings or house sparrows, which are invasive and not covered under the MBTA. However, even in these cases, humane treatment is recommended, and local ordinances may impose additional restrictions.

Step-by-Step Guide: How to Get Birds Out of Your Chimney Safely

Follow this structured process to address bird infestations in your chimney responsibly:

Confirm Bird Presence and Species
Use visual inspection, sound cues, or hire a certified chimney sweep with camera equipment to identify the bird type and nesting status.
Determine Nesting Status
If eggs or chicks are present, wait until the young have fledged (usually 4–6 weeks after hatching). Chimney swifts typically leave by late summer.
Close Off the Fireplace Side
Once the nest is confirmed inactive, close the damper and seal the fireplace opening with plastic sheeting or a temporary cover to prevent dust or debris from entering your home during cleanup.
Hire a Professional Chimney Sweep or Wildlife Removal Expert
A licensed technician can safely remove old nests, clean soot and droppings, and inspect for damage. They’ll also check for signs of disease (e.g., histoplasmosis from accumulated droppings).
Install a Chimney Cap
After removal, install a UL-listed chimney cap with mesh screening on all sides. This prevents future bird entry while allowing smoke and gases to escape.
Schedule Annual Inspections
Regular maintenance helps detect early signs of animal intrusion and ensures your chimney remains safe and functional.

What NOT to Do When Trying to Remove Birds

Avoid these common mistakes when dealing with birds in your chimney:

Don’t light a fire to scare birds out—this can injure or kill them and create dangerous fumes indoors.
Don’t use traps or poisons—these are inhumane and often illegal.
Don’t attempt to climb the chimney yourself—this poses severe fall and suffocation risks.
Don’t ignore the problem—accumulated droppings can harbor pathogens and attract pests like mites or rodents.

Preventing Future Bird Infestations

Prevention is the most effective long-term strategy for homeowners asking how do I get birds out of my chimney and keep them out. Key measures include:

Install a chimney cap: Choose one with fine mesh (≤½ inch) and a secure latch. Caps should be made of stainless steel or copper for durability.
Seal unused chimneys: If you no longer use your fireplace, consider installing a permanent closure or plug.
Trim nearby tree branches: These can serve as launch points for birds approaching the chimney.
Monitor seasonal patterns: Be vigilant each spring when migratory birds return.
Use deterrents cautiously: Devices like reflective tape or ultrasonic repellers have limited effectiveness and are not substitutes for physical barriers.

When to Call a Professional

While minor inspections can be done DIY-style, certain situations require expert intervention:

You suspect a large colony (e.g., multiple chimney swifts)
There’s significant buildup of droppings or nesting material
You notice structural damage to the flue or crown
You’re unsure about the legality of removal
You smell strong odors or see mold growth

Certified professionals from organizations like the National Chimney Sweep Guild (NCSG) or Wildlife Control Operators (WCOs) can provide compliant, safe solutions. Many offer emergency services and carry liability insurance.

Regional Differences and Timing Considerations

The best time to address bird issues varies by region due to climate and migration patterns. For example:

Region	Typical Nesting Season	Recommended Inspection Window	Notes
Northeast U.S.	May – August	September – October	Swifts migrate early; act before winter.
Southeast U.S.	April – July	August – September	Longer warm season may allow second broods.
Midwest U.S.	May – August	September – November	Check before heating season begins.
West Coast	March – July	August – October	Milder winters mean earlier arrivals.

Always verify local nesting timelines through state wildlife agencies or extension offices before scheduling removal.

Health Risks Associated with Bird Nests in Chimneys

Bird droppings and decomposing nests can pose health hazards. Accumulated guano may contain fungal spores that cause respiratory illnesses such as histoplasmosis, especially in immunocompromised individuals. Additionally, nests can block proper ventilation, leading to carbon monoxide buildup if the chimney is used for heating.

Proper protective gear—including N95 masks, gloves, and eye protection—is essential during cleanup. Professionals use HEPA vacuums and disinfectants to minimize contamination.

Cost of Bird Removal and Chimney Repair

Costs vary based on location, severity, and service provider. Average expenses include:

Chimney inspection: $100–$200
Nest removal and cleaning: $150–$400
Chimney cap installation: $150–$600
Full chimney repair (if damaged): $500–$2,000+

Some homeowners’ insurance policies may cover damage caused by animals, though routine prevention is typically not included.

Common Misconceptions About Birds in Chimneys

Several myths persist around this issue:

Myth: All birds in chimneys are pests.
Truth: Many are beneficial insect-eaters like chimney swifts.
Myth: You can remove nests anytime.
Truth: Legal protections apply during breeding seasons.
Myth: A loud noise will scare birds away permanently.
Truth: Birds often return; exclusion methods are more effective.
Myth: Only dirty chimneys attract birds.
Truth: Clean or dirty, any uncapped chimney is vulnerable.

Frequently Asked Questions

Can birds in my chimney cause a fire hazard?

Yes. Nesting materials are highly flammable. If you attempt to use the fireplace while a nest is present, it could ignite and cause a chimney fire. Always inspect before lighting a fire.

How long does it take for baby birds to leave the chimney?

Chimney swifts fledge in about 30 days. Other species may take 2–6 weeks depending on type. Observe from a distance and avoid disturbance.

Will birds come back to the same chimney every year?

Yes, chimney swifts often return to the same site annually. Installing a cap after they leave prevents re-entry.

Is it legal to remove a bird nest from my chimney?

Only if the nest is inactive (no eggs or young) and the species isn’t protected. When in doubt, consult a wildlife expert or your state’s Department of Natural Resources.

How can I tell if the birds are gone?

Listen for silence over several days, inspect via camera, and look for absence of new droppings. After confirming departure, schedule cleaning and capping promptly.