Bird in Your Chimney? Here's What to Do (and What Not to Do) in Seattle

Scratching sounds coming from your chimney. Chirping. Maybe a bird that's already made it into your firebox and is panicking against the glass. This is one of the more common calls we get in spring and summer — and the right response depends almost entirely on what species you're dealing with. Get this wrong and you could be looking at a federal violation.

First: What Kind of Bird Is It?

This is the most important question, and you need to answer it before you do anything else.

Chimney swifts are small, dark, fast-flying birds that nest almost exclusively inside masonry chimneys. They arrive in the Pacific Northwest in late spring and leave by early fall. If you hear a distinctive high-pitched chittering — almost like rapid clicking or insect-like chirping — coming from inside your flue, there's a good chance you have chimney swifts.

Here's the critical legal fact: chimney swifts are federally protected under the Migratory Bird Treaty Act of 1918. It is illegal to disturb, remove, or destroy a chimney swift nest while eggs or young are present. That protection applies to you, to us, and to any wildlife removal company. Anyone who tells you they can legally remove an active swift nest during nesting season is wrong.

All other birds — starlings, sparrows, pigeons, the occasional woodpecker — are a different situation entirely. A trapped or nesting non-swift bird can be dealt with.

If It's Chimney Swifts: What You Must Do

Wait. That's the legal answer, and honestly it's not the worst outcome. Chimney swifts eat an enormous number of flying insects — mosquitoes, gnats, flies — and a family of swifts in your chimney is doing real work for your yard. The season runs roughly May through August. By September they'll be gone, heading south for the winter.

While they're in residence, don't use the fireplace (which you wouldn't want to do in summer anyway), keep the damper closed to prevent birds from dropping into the firebox, and wait them out. Once they've departed in fall, that's your window — get a chimney cap installed before the following spring, and you won't have swifts again.

One important note: chimney swifts return to the same nesting sites year after year. If you don't cap the chimney before they return in late spring, you're starting the clock over again.

If It's a Different Bird Stuck in the Flue

Starlings and sparrows are the most common culprits. They'll enter an uncapped chimney, work their way down, and sometimes can't find their way back out — especially if they reach the smoke chamber below the damper. Signs of a stuck bird: irregular scratching sounds (not the rhythmic, busy sounds of swifts), flapping, and silence followed by more movement.

What to try first:

1. Close off the fireplace opening completely — tape a large trash bag or cardboard over the firebox opening so the bird can't escape into the house while you're working.
2. Open the damper slowly. The bird may work its way up and out on its own once it can access the full flue. Give it a few hours of quiet before checking.
3. If the bird has dropped into the firebox, darken the room, open a window or exterior door directly, and carefully open the fireplace. Birds move toward light — with the room dark and an exit lit, many will fly out on their own. Have the fireplace opening covered so it doesn't fly into the house instead of out.

If none of that works, call us. Getting a bird out of a flue often requires accessing it from the roof — removing the damper, using a long line with a flag to guide the bird upward, and confirming it's out before capping. This isn't a complicated job but it's not a good DIY scenario on a steep Seattle roof.

What About a Nest Without Birds?

An abandoned bird nest inside the flue — no eggs, no young, no active residents — can be removed as part of a standard chimney sweep. Nesting material (twigs, leaves, feathers, dried droppings) is a fire hazard and blocks airflow. If you've had birds in your chimney at some point and aren't sure whether they've left, a camera inspection from the roof will confirm it before we start any cleaning.

After the Birds Are Gone: The Chimney Needs Attention

Bird droppings are acidic. Extended nesting leaves guano, feathers, parasites, and debris on the flue walls and in the smoke chamber. Before you use the fireplace again after any bird situation — swift season ending, a trapped bird removed, an abandoned nest cleared — the flue should be swept and inspected. This isn't optional for wood-burning fireplaces: a debris-laden flue is a fire risk, and nesting material in contact with the smoke shelf can smolder.

The Permanent Fix: A Chimney Cap

Every uncapped chimney is an open invitation — not just for birds but for raccoons, squirrels, rain, and debris. A properly installed chimney cap covers the flue opening while still allowing exhaust gases to vent. For chimneys with multiple flues (common in older Seattle homes that vented both a fireplace and a furnace), a full-width chase cover or multi-flue cap handles all openings in one shot.

Cap installation is typically done the same visit as a chimney sweep — the technician is already on the roof. If you've just dealt with a bird situation, it's the right time to book both at once.

Heard something in your chimney? Contact us and we'll help you figure out what's there and what needs to happen. If it's swift season, we'll tell you honestly — and get you scheduled for a cap installation and sweep once they've migrated. See our chimney sweep and cleaning service for what's included after a bird situation.