AI Insight
Over the past 30 years, Swiss barn owls have exhibited measurable changes in their plumage, becoming more reddish-brown in coloration and developing heavier spotting patterns. Researchers at the University of Lausanne analyzed genomic data from more than 3,000 individual birds to identify specific genetic variants associated with these plumage changes. The study provides direct evidence of natural selection driving rapid evolutionary change in a wild vertebrate population over just three decades.
Why it matters
This research demonstrates that evolution can occur much faster than traditionally assumed, with observable changes happening within human timescales rather than over thousands of years. Understanding the genetic mechanisms behind rapid adaptation in wild populations has implications for predicting how species might respond to environmental changes, including climate change and habitat alteration.
Understand the Science
Over the past 30 years, Swiss barn owls have become more reddish-brown and more heavily spotted. By analyzing the genomes of more than 3,000 birds, scientists at the University of Lausanne identified the genetic variants linked to these changes in plumage and revealed natural selection at work. Their findings, published in Nature Communications, show that evolution can happen rapidly in the wild.