About
Macaulay Library, operated by the Cornell Lab of Ornithology, is the world's premier scientific archive of wildlife media — covering birds, amphibians, fish, mammals, and more. Founded in 1929, the archive now hosts contributions from over 80,000 citizen scientists and researchers worldwide, with recordings and imagery spanning more than 10,000 bird species alone. Users can explore species profiles complete with range maps, statistics, photographs, and sounds for virtually any bird on the planet. The archive supports the Merlin Bird ID app, a free AI-powered identification tool covering species across North and South America, Europe, Asia, Africa, and Australia. Contributors can upload their own wildlife media following best-practice guidelines, and an interactive Photo + Sound Quiz allows users to sharpen their identification skills while simultaneously helping scientists validate data. Macaulay Library also provides a curated Sound Recording Dashboard with regional leaderboards, educational courses on recording techniques, downloadable sound guides, and rich resources for choosing gear and editing audio. The archive has been cited in over 1,400 scientific publications, making it an indispensable resource for professional ornithologists, conservation biologists, and passionate naturalists alike. Whether you're a student learning wildlife identification, a researcher building a dataset, or a birder documenting a rare sighting, Macaulay Library offers the tools and community to contribute meaningfully to global biodiversity science.
Key Features
- Massive Wildlife Media Archive: Hosts photos, audio recordings, and videos spanning 10,000+ bird species and thousands of mammals, amphibians, and fish contributed by 80,000+ users worldwide.
- Merlin Bird ID Integration: Powered by AI and computer vision, Merlin provides free, instant bird identification for species across all major continents directly from the archive's data.
- Species Explorer: Browse range maps, statistics, photos, and sounds for any bird species in the world, with data continuously updated by citizen scientists via eBird.
- Photo + Sound Quiz: An interactive quiz that helps users practice wildlife identification skills while contributing to scientific data validation efforts.
- Sound Recording Resources: Offers expert tutorials, gear guides, audio editing tips, recording workshops, and a Bird Academy course to help contributors improve their field recording skills.
Use Cases
- Birders and wildlife enthusiasts documenting and archiving their field observations with photos, audio, and video.
- Ornithologists and conservation biologists accessing high-quality multimedia datasets for peer-reviewed research.
- Students and educators using species profiles, maps, and sounds to support biology and environmental science curricula.
- Nature photographers and sound recordists contributing to a global citizen science database and gaining visibility for their work.
- App developers and researchers leveraging archive data to build AI-powered wildlife identification and monitoring tools.
Pros
- Completely Free to Access and Contribute: The entire archive is freely accessible and open to contributions from anyone, making professional-grade scientific resources available to all.
- Backed by Cornell University Science: Maintained by the Cornell Lab of Ornithology, the archive meets rigorous scientific standards and has been cited in over 1,400 peer-reviewed publications.
- Broad Species Coverage: Goes beyond birds to include amphibians, fish, and mammals, making it a versatile resource for naturalists and wildlife researchers of all specialties.
- Active Citizen Science Community: With over 80,000 contributors globally, the archive is continuously growing and improving, ensuring fresh, diverse, and geographically broad media coverage.
Cons
- Highly Niche Focus: The archive is dedicated exclusively to wildlife and natural history media, limiting its utility outside of biology, conservation, and nature education contexts.
- Account Required to Contribute: While browsing is open to all, users must register and follow specific guidelines to upload and archive their own media.
- Advanced Features Require Learning Curve: Getting the most out of features like audio editing, recording dashboards, and eBird integration may require time to learn for new users.
Frequently Asked Questions
Is Macaulay Library free to use?
Yes, Macaulay Library is completely free to browse and explore. Contributing media also requires only a free account registration.
Who can contribute media to the archive?
Anyone can contribute photos, audio recordings, and videos. Cornell provides best-practice guides and editing tips to help contributors submit high-quality media.
What is Merlin Bird ID and how does it relate to Macaulay Library?
Merlin Bird ID is a free AI-powered app for identifying birds. It is powered by data and media from the Macaulay Library and eBird, enabling instant species ID from photos or sounds.
How many species does the archive cover?
The archive covers over 10,000 bird species and more than 2,674 species of amphibians, fish, mammals, and other wildlife.
Can the archive be used for scientific research?
Absolutely. Macaulay Library has been referenced in over 1,400 scientific publications and is widely used by researchers, conservationists, and educators globally.
