Noisy humans harm birds and affect breeding success

A global review of studies since 1990 found human-made noise disrupts bird communication, foraging and increases stress, and the analysis reported strong negative effects on reproduction across six continents.

Researchers analysed nearly four decades of published studies on birds and noise. They pooled data from work since 1990 covering about 160 species on six continents. The team reported that human-made noise affects communication, foraging, aggression, physiology and habitat use. They said these changes translated into strong negative effects on reproduction for many species. Key findings: - The analysis covered studies published since 1990 and data from roughly 160 bird species across six continents. - Noise from humans — including traffic, aircraft and construction — was linked to disrupted songs and calls, altered foraging and higher stress hormone levels. - Reproductive outcomes were negatively affected overall, with ground-nesting species and open-nest chicks showing pronounced impacts. Summary: The study frames noise pollution as an underappreciated driver of harm to bird behaviour and reproductive success. Authors noted possible mitigation approaches such as quieter equipment, timing work outside peak breeding periods and sound-muffling building materials; implementation steps are undetermined at this time.