Why are there feathers and twigs falling into my firebox?
Feathers and twigs falling into the firebox almost always mean a bird or other animal has built a nest in the flue, and pieces are working loose and dropping down. Treat it as a sign that something is living or nesting in the chimney, and do not light a fire until a technician has looked.
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The nuance is whether the nest is still in use. An active nest may involve a protected species, so the right first step is to identify the animal, not to clear the flue in a hurry.
Why it happens
An open chimney top looks like a hollow tree to a bird or small animal. The flue is sheltered and hard for predators to reach. Twigs, leaves, grass and feathers get packed onto the smoke shelf or against the damper, and some of it drops into the firebox as the animals move or the nest dries out and shifts.
The debris is more than a mess. A pile of dry nesting material in the flue can block the exhaust path, so smoke and gases have nowhere to go but into the room. Dry twigs and feathers also burn easily, and burning nesting material is a common cause of chimney fires.
Droppings in and around a nest can carry disease, so the debris should not be handled or stirred up. In many places nesting birds are also legally protected, which can limit when and how a nest may be removed. A local wildlife authority or your building department can tell you what applies where you live.
What you can check yourself
Look from a distance
Shine a flashlight into the firebox from a few feet back and note what has fallen: feathers, twigs, droppings, or anything that looks like an animal. Do not reach in or poke up the flue.
Listen
Notice any scratching, chirping or rustling, and whether it is louder at certain times of day. Noting this helps the technician identify the animal.
Leave the damper alone
Check the damper handle only to see whether it is open or closed. Do not force it, because moving it can bring down a load of debris.
Smell and check your alarms
A strong droppings or musty smell near the fireplace is worth noting. Make sure your carbon monoxide and smoke alarms are working.
Keep the area clear
Keep children and pets away from the hearth and do not sweep or vacuum the debris, which puts dust in the air. Leave it for the technician.
When to call a technician
Call as soon as you see nesting material in the firebox, hear animals in the flue, or notice droppings. Until the chimney has been checked, stop using the fireplace or stove, and never light a fire to drive an animal out. It is cruel and it can ignite the nest. If smoke ever comes into the room, or anyone has a headache or dizziness while a fire is lit, get outside and call 911.
One Call Chimney is a referral and scheduling service. One call to (866) 576-7943 arranges an independent chimney technician, with a free estimate. The technician inspects the chimney and gives you the price before any work starts, and you approve it first. Rules on removing nests and on whether permits apply vary by place, so check with your local building department.
What the technician will do
- Identify the animal firstThe technician works out what is in the flue before anything is removed, because the species decides how it can be dealt with.
- Remove or humanely evictWhere the species requires it, a wildlife specialist is involved so the animal is removed or encouraged out humanely and lawfully.
- Clear nesting material and debrisNests, droppings and fallen debris are taken out of the flue and firebox.
- Sweep and inspect the flueOnce it is clear, the flue is swept and inspected for blockage, damage or soot build-up left behind.
- Fit a properly sized cap with meshA cap with mesh that fits your flue keeps animals out in future while letting smoke escape.
Related questions
- Can I light a fire to make the animal leave?
- No. It is cruel to the animal, and burning nesting material is a common cause of chimney fires. A technician can arrange a safe and lawful removal.
- Is a bird nest in the chimney really a fire risk?
- Yes. Dry twigs, grass and feathers ignite easily, and a nest can also block the flue so smoke backs up into the room. Leave the fireplace unused until it has been cleared.
- Can I just clean up the feathers and twigs myself?
- It is better not to. Droppings can carry disease and sweeping stirs them into the air. The debris in the firebox is only part of what is in the flue, so the whole chimney needs checking.
- How do I stop animals getting back in?
- A properly sized chimney cap with mesh closes the opening at the top. A technician can fit one after the flue has been cleared and inspected.
- How much will it cost to remove an animal from my chimney?
- It depends on the species, how hard the chimney is to reach, how much debris there is, and whether the cap or other parts need work. The estimate is free, and the technician gives you the price before work begins.
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