Noise Pollution Hurts Birds: Fixes Possible

New research shows human-made sounds impact bird behavior, physiology and fitness, but solutions exist

Published on Feb. 11, 2026

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New research led by the University of Michigan has found that noise pollution from human activities like traffic and construction is negatively impacting birds' behavior, physiology and reproduction. The study, which analyzed data from over 150 studies covering 160 bird species across six continents, highlights how birds' reliance on acoustic signals for mating, predator warning, and feeding is disrupted by loud noises. While bird populations have declined sharply in recent decades, the researchers say the effects of noise pollution are predictable and can be mitigated through the use of building materials and techniques to reduce sound.

Why it matters

Birds play crucial roles in ecosystems as pollinators, seed dispersers, and pest controllers. Their population declines have far-reaching consequences, and this research indicates noise pollution is a contributing factor that has been overlooked. Understanding the specific impacts on birds can help guide solutions to support biodiversity.

The details

The study, published in the journal Proceedings of the Royal Society B, found that birds living in urban areas tend to have higher stress hormone levels, and those nesting in cavities are more likely to experience negative effects on their growth compared to open-nesting birds. The researchers say there are already building techniques available to mitigate noise, just as measures have been taken to prevent bird collisions with windows.

  • The research was published in February 2026.

The players

Natalie Madden

Lead author of the study and a conservation science and policy analyst with Defenders of Wildlife.

Neil Carter

Senior author of the study and associate professor at the University of Michigan School for Environment and Sustainability.

University of Michigan

The institution that led the research, with collaborators including Kirby Mills and Karen Alofs.

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What they’re saying

“The major takeaway from this study is that anthropogenic noise affects many aspects of bird behavior, with some responses more directly tied to fitness.”

— Natalie Madden, Lead author (Mirage News)

“Knowing all this, combined with the fact that it is technically possible to reduce and manage noise, this feels like it's relatively low-hanging fruit.”

— Neil Carter, Senior author (Mirage News)

What’s next

The researchers say the predictable effects of noise pollution on birds mean solutions can now be implemented, such as using building materials and techniques to reduce sound levels in areas with high bird populations.

The takeaway

This study highlights an overlooked threat to birds - noise pollution from human activities. While bird populations have declined sharply in recent decades, the researchers say the impacts of noise can be mitigated through the use of existing building solutions, presenting an opportunity to support biodiversity.