"The Passenger Pigeon"
"The Passenger Pigeon" in the 1911 Annual Report of the Smithsonian Institution noted in its introduction that there was one living bird left in 1911. This report marks the beginning of conservation efforts in the United States. You can request the 1911 Annual Report from storage using the information and links in our catalog record. The Smithsonian also has an article at The Passenger Pigeon that includes a picture of Martha, the last bird mentioned in 1911.