A Bird Laid a Nest in My Compost Bin: What Should I Do?

Discovering a bird nest in your compost bin can be surprising, especially if you were planning to turn the pile, add food scraps, or harvest finished compost. The good news is that in most situations, the best solution is simple: leave the nest alone and temporarily adjust how you manage your compost. The right approach depends on whether the nest contains eggs, baby birds, or is still being built.

Why Do Birds Nest in Compost Bins?

Many compost systems provide exactly what nesting birds are looking for:

• Protection from wind

• Shelter from rain

• Warmth from decomposing materials

• Nearby food sources such as insects and seeds

• Limited disturbance

Birds commonly nest in:

• Open compost bins

• Three-bin compost systems

• Pallet compost bins

• Compost storage areas

• Leaf piles

• Brush piles near compost systems

They are less likely to nest in:

• Frequently turned hot compost piles

• Sealed tumblers

• Continuously active systems

First: Determine What You Found

Before doing anything, carefully observe from a distance.

Is It Just Nesting Material?

If the bird has only started gathering materials and no eggs are present, you may be able to gently discourage nesting before construction is complete.

Look for:

• Small twigs

• Dry grass

• Leaves

• Feathers

without:

• Eggs

• Adult birds regularly returning

Are There Eggs?

If eggs are present, stop working in that section of the compost system. Most birds require only a few weeks to incubate eggs.

Are There Baby Birds?

If chicks are present, avoid disturbing the nest. Young birds often leave the nest within two to three weeks depending on species.

Should You Move the Nest?

In nearly every situation, the answer is no. Moving a nest can:

• Cause parents to abandon it

• Damage eggs

• Injure nestlings

• Violate wildlife protection laws

In the United States, many native bird species are protected under the federal Migratory Bird Treaty Act. Unless there is an immediate safety concern, it is generally best to leave the nest where it is.

Can You Keep Composting?

Usually, yes, but with modifications.

If the Nest Is on the Edge of the Bin

Continue using other sections of the compost system. For example:

• Add materials to a different bin

• Start a temporary compost pile nearby

• Use a separate container for food scraps

If the Nest Is in the Active Compost Area

Pause turning or harvesting from that compost bin until nesting is complete. Avoid:

• Digging near the nest

• Moving material

• Spraying water directly on the nest

Continue Collecting Food Scraps

Stopping composting entirely is usually unnecessary. Instead:

• Store scraps in another bin

• Use a second compost pile

• Freeze food scraps temporarily

• Share materials with another composter

This keeps food waste out of the trash while protecting the birds.

Hot Compost vs Cold Compost Considerations

Hot Compost Systems

Hot compost piles can reach 130°F to 160°F (54°C to 71°C). If a nest is located directly within an active hot compost pile, monitor conditions carefully.

Fortunately, most birds avoid the hottest central portions of actively managed piles. If temperatures are rising rapidly near the nest:

• Stop turning the pile

• Stop adding large amounts of nitrogen-rich material

• Allow the pile to cool temporarily

Cold Compost Systems

Most backyard compost piles remain relatively cool. These systems typically pose fewer risks to nesting birds and are easier to leave undisturbed during nesting season.

What About Compost Tumblers?

A nest inside a compost tumbler requires special attention. Do not rotate the tumbler if:

• Eggs are present

• Chicks are present

• Parents are actively nesting

Instead:

• Leave the tumbler stationary

• Use a secondary compost system temporarily

Once nesting activity ends, normal operation can resume.

School Garden and Community Compost Considerations

Schools, libraries, and community gardens occasionally encounter nesting birds in outdoor compost systems. This can become an excellent educational opportunity. Students can learn about:

• Local wildlife

• Nesting behavior

• Food webs

• Habitat needs

• Observation skills

• Responsible stewardship

Important reminder: Students should observe from a distance and never handle eggs or chicks. A simple sign explaining the temporary nesting area can help prevent accidental disturbance.

How Long Will the Nest Be There?

The answer depends on species, but many songbirds complete nesting within four to eight weeks. A typical timeline:

Nest Building

3–7 days

Egg Incubation

10–18 days

Nestling Stage

10–21 days

Fledgling Stage

Several additional days nearby

After young birds leave, wait several days before resuming major compost maintenance.

How to Prevent Future Nesting

If nesting repeatedly interferes with compost operations, consider:

Turn Compost More Frequently

Birds prefer quiet, undisturbed locations.

Cover Open Areas

Use:

• Hardware cloth

• Wire mesh

• Compost covers

while maintaining airflow.

Harvest Finished Compost Promptly

Large undisturbed piles often become attractive nesting sites.

Maintain Multiple Compost Areas

A multi-bin system provides flexibility when one area becomes temporarily unavailable.

Common Mistakes

Removing Eggs

This can harm wildlife and may be illegal for protected species.

Turning the Compost Immediately

Sudden disturbance can destroy nests or separate parents from chicks.

Spraying Water at the Nest

Birds need a stable nesting environment.

Assuming Parents Have Abandoned the Nest

Adult birds often stay away when people are nearby. Watch from a distance before making assumptions.

Frequently Asked Questions

Will compost attract birds?

Yes. Compost piles attract insects, worms, seeds, and shelter opportunities that many birds find appealing.

Will birds damage my compost?

Usually not. Most nesting birds have little impact on compost quality.

Can compost heat kill eggs?

It depends on where the nest is located. Most birds choose cooler edges or protected spaces rather than the hottest part of a compost pile.

Can I add food scraps while birds are nesting?

Often yes, provided you avoid disturbing the nest area.

Should I call a wildlife rehabilitator?

Only if:

• An injured bird is present

• Chicks appear abandoned for an extended period

• The nest is in immediate danger

Managing a Bird Nest in Your Compost Bin

A bird nest in your compost bin is usually a temporary inconvenience rather than a serious problem. In most cases, the best approach is to leave the nest undisturbed, adjust your composting routine for a few weeks, and allow the birds to complete their nesting cycle. For gardeners, schools, and families, it can also serve as a reminder that healthy outdoor spaces support more than composting. They create habitat, attract beneficial wildlife, and provide opportunities to observe natural systems at work. Once the birds have moved on, your composting operation can return to normal while keeping food scraps cycling back into healthy soil instead of becoming waste.

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About Let’s Go Compost

Let’s Go Compost is a national nonprofit making composting simple, affordable, and accessible. Our programs bring hands-on composting to communities, helping people turn food and plant waste into healthy soil that supports food systems, native plant ecosystems, and pollinators. Learn more at letsgocompost.org and support our work at letsgocompost.org/donate.