The Biodiversity Heritage Library (BHL) and Smithsonian Libraries staff participated in BioBlitz 2016 in Washington, D.C. on 20-21 May. A BioBlitz focuses on finding and identifying as many species as possible in a specific area over a short period of time. In this special edition of the BioBlitz, held in conjunction with the National Park Service’s centenary, the D.C. BioBlitz was accompanied by a two-day Biodiversity Festival on the National Mall at Constitution Gardens. The event was co-hosted by the National Park Service and National Geographic.