Porzana rua Steadman, 1987:28
Mangaia crake, mo'o mo'o (cryptid)*
Taxonomy & Nomenclature
Conservation Status
Missing
* David Steadman talked with native Mangaians who mentioned a small black rail called the mo'o mo'o which may be a surviving population of P. rua (see Hume & Walters, 2012:331).
Distribution & Habitat
Mangaia Cook Islands, New Zealand
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Steadman, David W. (1987). Two new species of rails (Aves: Rallidae) from Mangaia, Southern Cook Islands. Pacific Science 40(1-4): 27-43.
Other references:
Faurby, Søren, Matthews, Tom J., Triantis, Kostas A. and Sayol, Ferran. (2026). Quantifying the unrecorded loss of avian phylogenetic diversity. Ecography 2026: e08267. https://doi.org/10.1002/ecog.08267
Hume, Julian Pender and Walters, Michael. (2012). Extinct Birds. London: T & AD Poyser. 544 pp.
Livezey, Bradley C. (1998). A phylogenetic analysis of the Gruiformes (Aves) based on morphological characters, with an emphasis on the rails (Rallidae). Phil.Trans. R. Soc. Lond. B 353: 2077-2151.
Matthews, Thomas J., Triantis, Kostas A., Wayman, Joseph P., Martin, Thomas E., Hume, Julian P., Cardoso, Pedro, Faurby, Søren, Mendenhall, Chase D., Dufour, Paul, Rigal, François, Cooke, Rob, Whittaker, Robert J., Pigot, Alex L., Thébaud, Christophe, Jørgensen, Maria Wagner, Benavides, Eva, Soares, Filipa C., Ulrich, Werner, Kubota, Yasuhiro, Sadler, Jon P., Tobias, Joseph A. and Sayol, Ferran. (2024). The global loss of avian functional and phylogenetic diversity from anthropogenic extinctions. Science 386(6717): 55-60. https://doi.org/10.1126/science.adk7898 [Supplementary Materials; Dryad dataset; Zenodo codeset]
Matthews, Thomas J., Wayman, Joseph P., Cardoso, Pedro, Sayol, Ferran, Hume, Julian P., Ulrich, Werner, Tobias, Joseph A., Soares, Filipa C., Thébaud, Christophe, Martin, Thomas E. and Triantis, Kostas A. (2022). Threatened and extinct island endemic birds of the world: Distribution, threats and functional diversity. Journal of Biogeography 49(11): 1920-1940. https://doi.org/10.1111/jbi.14474 [Appendix S1 (.docx); Appendix S2 (.pdf)]
Sayol, Ferran, Steinbauer, Manuel J., Blackburn, Tim M., Antonelli, Alexandre and Faurby, Søren. (2020). Anthropogenic extinctions conceal widespread evolution of flightlessness in birds. Science Advances 6(49): eabb6095. https://doi.org/10.1126/sciadv.abb6095 [Supplementary Material (Data File S1)]
Steadman, David W. (1995). Prehistoric Extinctions of Pacific Island Birds: Biodiversity Meets Zooarchaeology. Science 267(5201): 1123-1131.
Steadman, David W. (2006). Extinction and Biogeography of Tropical Pacific Birds. Chicago: University Of Chicago Press. xiv + 594 pp.
Steadman DW and Kirch PV (1990) Prehistoric extinction of birds on Mangaia, Cook Islands, Polynesia. Proceedings of the National Academy of Sciences USA 87: 9605-9609.
Tyrberg, Tommy. (2009). Holocene avian extinctions, pp. 63-106. In: Turvey, Samuel T. (ed.). Holocene Extinctions. Oxford, UK & New York, USA: Oxford University Press. xii + 352 pp.