Blockstein, D. E.; Tordoff, H. B. 1985. Gone forever: a contemporary look at the extinction of the Passenger Pigeon. American Birds 39(5): 845-851.
Bucher, E. H. 1992. The causes of extinction of the Passenger Pigeon. Current Ornithology 9: 1-36.
Halliday, T. R. 1980. The extintion of the Passenger Pigeon Ectopistes migratorius and its relevance to contemporary conservation. Biological Conservation 17: 157-167.
IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: www.iucnredlist.org. (Accessed: 10 December 2019).
Schorger, A. W. 1955. The Passenger Pigeon: its natural history and extinction. University of Wisconsin Press, Madison, USA.
Wilcove, D. 1989. In memory of Martha and her kind. Audubon 91: 52-55.
BirdLife International (2020) Species factsheet: Ectopistes migratorius. Downloaded from http://www.birdlife.org on 05/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 05/07/2020.