Where the wild things are heard

In the late 19th century, Thomas Edison's invention of the "talking machine" paved the way for the first recording of the white-rumped shama's song, housed at Frankfurt Zoo. This marked the beginning of a market for bird calls, eventually leading to the production of entire bird-themed records.

Now, over a century later, a group of ecologists and enthusiasts are harnessing modern technology to focus on India's diverse wildlife. In 2025, they initiated a project to record the sounds of the country's significant ecosystems, gathering nearly a hundred hours of recordings across various landscapes. This endeavor resulted in the creation of India's first open-access, crowdsourced ecoacoustic dataset, a valuable resource for training machine learning models that were previously restricted to data predominantly from the Global North.

The project's foundation lies in a simple yet crucial observation: sight only provides partial insight, especially within dense forest vegetation. Sound, however, offers a unique perspective into the non-human world. Animals communicate, attract mates, establish territories, and navigate through sound. These vocalizations can reveal critical information about species distribution, abundance, behavior, and even physiological states.

Interestingly, the techniques developed through this project have also contributed to the rediscovery of species once thought to be extinct. The Australian night parrot, a creature unseen for over a century, is now being monitored using acoustic recorders, demonstrating the potential of this revolutionary approach. The journey began with the shama's captive song, but it has evolved into a powerful method for understanding and preserving the wild.