Chimney swifts are migratory birds found throughout North, South, and Central America. They are small dark gray birds that look like cigars with long, narrow wings. When flying, they feed on insects in mid-air and live in large flocks.

Unable to perch, they cling to vertical surfaces. The bird’s common name comes from one of its favorite nesting places, chimneys. However, chimney swifts become problematic for homeowners when their nests interfere with the use of their chimneys. Critter Control is an expert at chimney swift removal if you suspect you have chimney swifts nesting and breeding in your chimney.

Signs of a Chimney Swift Infestation

Both bats and chimney swifts like to inhabit chimneys, so it can be hard to discern between them. Signs that you have swifts in your chimney include:

  • Chimney swift noises are distinct. They are vocal birds, and you’ll be able to hear their chirps and tweets, especially during nesting season.
  • Chimney swifts are most active at dawn and dusk. So, if you pay attention during these periods, you’ll be able to see them leaving and entering your chimney.
  • If you look up into your chimney, you might be able to see chimney swift nests attached to your chimney wall. You might also see nesting materials, such as twigs and leaves, that have fallen into your fireplace.
  • If your infestation is significant, you will see droppings that have fallen inside your fireplace from nesting swifts.
  • As droppings accumulate inside your chimney, you might notice a bad odor from the droppings as well as from decaying nesting materials.
  • As nests accumulate in your chimney, you’ll notice difficulty starting fires, as those nests will cause a decrease in draft efficiency.

Professional Chimney Swift Control

Chimney swift birds are protected under the Federal Migratory Bird Treaty Act. This means it is a federal offense to harm them, underscoring the importance of calling in professionals like Critter Control. Critter Control has the expertise, experience, and dedication to humane practices to eradicate swifts in your chimney.

Chimney Swift Trapping

When first confronted with a chimney swift problem, many homeowners call a chimney sweep when what is needed is a nuisance wildlife removal company such as Critter Control.

Trapping swifts is both difficult and harmful to these protected birds. Trapping and relocating is too stressful on swifts. To remove swifts from your chimney after nesting season, Critter Control will install a temporary cap on your chimney that will allow them to fly out at dawn to feed but will exclude them from coming back down your chimney. Once all the swifts have been removed, a different, permanent cap is installed to prevent future infestations.

Critter Control uses only humane wildlife control to eliminate chimney swifts or any other nuisance animal.

Chimney Swift Prevention and Exclusion

For chimney swifts, the process is one of discouraging them from entering places you don’t want them while encouraging them to find other adequate roosting places. A bird-proof chimney cap with a mesh screen and a small grid is a very effective way to keep chimney swifts out of your chimney. This is best done in the fall to ensure the swifts have left your chimney to migrate south.

Other prevention methods include repairing and sealing around your chimney to ensure they cannot enter. For best results, schedule annual chimney inspections.

Chimney swifts have been in decline as a species as their roosts have been disappearing. If you are inclined to help these beneficial birds that can eat as many as 12,000 insects per day, think about building a chimney swift tower in your backyard or in a park.

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30 October 2026
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Sam did a ton of work on our house when we bought it as a preventative measure against any pests, as the house was not new. We wanted to be sure no mice, bats or other pests could get in. He did all our critter control at our prior house in 2022 so we had him pest proof our next house in 2026. He is the kindest man, knowledgeable and efficient. 100% recommend. You’re buying pest control and peace of mind.
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Peggy Protko
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I was concerned that there might be squirrels in my attic. Alex did a complete and thorough inspection of the residential premises, and I am happy to report that he found no such evidence. Alex’s service was very thorough and professional, as well as honest. I would not hesitate to recommend your services to others.
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Don Hemmer
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We interviewed 3 companies to evict the squirrels from our attic. Critter Control was, by far, the least expensive. Their promptness and attention to detail was A+. Brandon from Critter Control provided daily reports about the process. Brandon was the star of the show but we enjoyed working with everyone from Critter Control. Thanks Don and Julie
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Adrienne Numbers
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Josh was awesome! We had a critter stuck in our fireplace, and he took his time figuring out the best way to handle the situation. He was creative with his solutions, explained what he was going to do, and made sure we understood the process. He was also just a genuinely great person to work with! As a new homeowner, it was nice to have someone who was patient, knowledgeable, and willing to take the time to get the job done right. He never made us feel rushed, and you could tell he really cared about helping us. Critter Control, you have a great employee in Josh! I hope he gets the recognition he deserves because he did an amazing job. I would absolutely recommend Critter Control, and if we ever have another issue, I will definitely be asking for Josh again!
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Critter Control was very responsive, thorough and finished everything quickly. I appreciate the work of Justin and Steven!
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Critter Control helped so much with a very difficult pest situation. Throughout the time period , they expertly communicated and scheduled daily service when necessary to get this problem under control. I am so grateful for their kindness and understanding to our specific needs. I will definitely continue to call on them in the future and recommend them to others who are experiencing critter problems.
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Ashton was a great communicator, quick with his work and very courteous.

Chimney swifts are about the same size as a robin. They have a tube-like body that is often compared to a cigar with long, narrow wings that have a span of around 12 inches. They are gray, and their tails are short and square. In flight, their patterns look similar to those of bats as they feed on insects mid-air.

Chimney swifts are native to North and South America. As migratory birds, they breed in North America and Canada and migrate to South America for the winter. In the U.S., it is common to find them in urban and suburban areas, where they nest primarily in chimneys and abandoned buildings. In the winter, their habitat is in the forests with adjacent open land where insects are plentiful.

Chimney swifts come out right after dawn and feed in flocks continuously all day. They then return to communal roosts, where they rest up for the next day.

Chimney swifts take advantage of uncapped or damaged chimneys through which they can easily enter.

Because they live in flocks, the multiple nests within a single chimney can block the flue. This can restrict the airflow necessary for smoke and carbon monoxide to rise out of your home, causing a fire risk. Other issues include chimney swift noises from their chirping and the droppings that can accumulate in your chimney.

Chimney swift droppings philly

Chimney swift droppings in chimney

Since nesting chimney swifts pose a fire risk, it is important to call an experienced professional wildlife removal company such as Critter Control. Critter Control is well-trained in both the laws of the Migratory Bird Treaty Act and humane removal techniques.

Chimney swifts will remain in your chimney throughout their breeding season, which typically lasts from about May through September. Once their offspring fledge, they begin their preparation for migration.

Since chimney swifts are a protected species and cannot be harmed, removal is conducted through the installation of a one-way chimney cap that lets the swifts fly out but not back in.

Several factors determine the cost of removing chimney swifts, including the extent and complexity of the infestation, the amount of cleanup and repair, and whether your locality requires a permit for removal. Critter Control offers free inspections, after which they will provide you with a detailed plan for removal, costs, and their guarantee.

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