Researchers from various fields accumulate extensive collections of biological samples for their projects. But decentralized collections are difficult to navigate and explore without clear documentation of when, where and how the samples were collected and preserved. This hinders efficient repurposing of samples across disciplines.

Standardized and centralized reporting of metadata would be a simple way to unlock the potential of samples stored in collections, enhancing their accessibility, searchability and traceability. The AviSample Network, an initiative led by avian ecologists, aims to do this for bird tissue samples (V. Brlík et al. Ibis 164, 343–349; 2022). Since its launch in 2021, it has gathered metadata relating to 36,000 samples of nearly 500 bird species. It has facilitated demanding projects spanning large geographical regions and covering the bird tree of life, including rare species.

A transdisciplinary approach would enable efficient repurposing of samples and save resources, as well as allowing researchers to cultivate wider research networks — ultimately amplifying scientific impact. Data repositories could start by extending their scope to include metadata, and scientific journals could recommend that authors deposit sample metadata.