The Passenger Pigeon is currently installed in the Urban Bird Habitat Garden at the Smithsonian’s National Museum of Natural History.

In 2015, The Smithsonian Libraries and Smithsonian Gardens presented the Carolina Parakeet, Labrador Duck, Great Auk and Heath Hen in the Haupt Garden, a 4.2-acre public rooftop garden between the Smithsonian Castle and Independence Avenue. 

Smithsonian Libraries also had a companion exhibit, Once There Were Billions: Vanished Birds of North America, on view at the National Museum of Natural History from June 24, 2014 through October 2015.