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The 2021 Border BioBlitz is a community science effort to record as many species as possible along the U.S.-Mexico border. To join the discovery, all you need is a smartphone with the iNaturalist app (free for Android and iOS) and to join our iNaturalist project. eBird users are also welcome to participate. Simply create your checklist in your own account and then share it with the “BorderBioBlitz” account when you submit. The 2021 Border BioBlitz will run the entire month of April!