###Acknowledgments Compiling these extensive datasets was a major undertaking, and we are very thankful to the many domain experts who helped to collect and manually annotate the data for this competition. Specifically, we would like to thank (institutions and individual contributors in alphabetic order): ###[The Ayres Lab at Dartmouth College](https://www.dartmouth.edu/~mpayres/) **Matt Ayres, Jessica Jones, and Kyle Kittelberger** ”Dartmouth”

###[The California Academy of Sciences](https://www.calacademy.org/) **Jack Dumbacher, and Durrell Kapan**

###[The Center for Conservation Bioacoustics at the Cornell Lab of Ornithology](https://bioacoustics.cornell.edu) **Russ Charif, Stefan Kahl, Holger Klinck, Rob Koch, Jim Lowe, Ashik Rahaman, Yu Shiu, and Laurel Symes**

###[The Google Bioacoustics Group](https://research.google/) **Julie Cattiau, and Tom Denton**

###[The Macaulay Library at the Cornell Lab of Ornithology](https://www.macaulaylibrary.org/) **Jessie Barry, Sarah Dzielski, Cullen Hanks, Jay McGowan, and Matt Young** The

###[The Patricelli Lab at the University of California, Davis](https://patricellilab.faculty.ucdavis.edu/) **Mary Clapp** The

###[Xeno-canto](https://www.xeno-canto.org)

###LifeCLEF

###Photo Credits Red-winged Blackbird © Drew Weber / Macaulay Library at the Cornell Lab of Ornithology (ML227768151) Bewick's Wren © Derek Hameister / Macaulay Library at the Cornell Lab of Ornithology (ML214764391)