Birdsong, water, and rustling leaves may be part of why some city green spaces feel mentally restorative.

City parks are not silent. Their sounds may matter. This review links natural soundscapes with better mental restoration.

Quick summary

• What the study found: A scoping review of 22 studies found natural sounds in urban green spaces were positively associated with relaxation and perceived restoration.
• Why it matters: Sound may be one part of how parks, gardens, and other green spaces relate to stress, mood, and attention.
• What to be careful about: The evidence is mostly associative, with varied methods, so it should not be read as proof that natural sounds cause better mental health.

Natural sounds in green spaces showed positive links

The paper Exploring the relationship between mental health and urban green space soundscapes: A scoping review, in PLOS One, reviewed 22 peer-reviewed studies on how urban green space soundscapes are associated with mental health outcomes.

Across the included studies, birdsong, water sounds, and rustling leaves were positively associated with relaxation and perceived mental restoration.

Mechanical sounds, including traffic noise, were linked with adverse mental health outcomes.

What this means for stress and mood

The review points to sound as one possible ingredient in why green spaces can feel restorative. It is not just trees, paths, or open space.

Common outcomes included stress reduction, mood enhancement, perceived restorativeness, and cognitive restoration. Cognitive restoration means feeling mentally refreshed after attention has been drained.

Everyday places where this may show up

For a city dweller, the relevant difference may be subtle. A bench near moving water may feel different from one beside heavy traffic.

The paper does not test personal routines. Still, it supports paying attention to the sound layer of parks, courtyards, walking routes, and other urban green spaces.

This matters because many people cannot easily leave cities. Improving urban green space soundscapes could be one practical planning target.

A safe way to use the idea

For individuals, the safest takeaway is modest. Natural sounds may be worth noticing when choosing where to sit, walk, or take a short break.

That is different from treating sound as therapy. The review does not show that birdsong or water sounds can diagnose, treat, or cure mental health problems.

If a place feels more calming because traffic noise is lower and natural sounds are clearer, that experience fits the pattern described here.

Limits matter more than the headline

This was a scoping review, designed to map existing research. It was not a single experiment testing whether specific sounds directly change mental health.

The abstract notes cross-sectional designs and methodological heterogeneity. Cross-sectional means many studies measured exposure and outcome at one point, which limits causal interpretation.

Methods also varied. Some studies used standardized tools, including stress, affect, and perceived restorativeness scales, but variation makes firm comparisons harder.

The practical message is simple: quieter green spaces with more natural sounds may support restoration, but the evidence is associative and still developing.