Gruiformes Rails and alliesprobably paraphyletic Goldman's yellow rail, Coturnicops noveboracensis goldmani (Mexico, late 20th century?) A subspecies of the yellow rail that has not been recorded since 1964 and has lost much of its wetland habitat since then. Macquarie rail, Hypotaenidia philippensis macquariensis (Macquarie Islands, Southwest Pacific, 1880s) A subspecies of the buff-banded rail. Raoul Island banded rail, Hypotaenidia philippensis ssp. (Raoul, Kermadec Islands, Southwest Pacific, late 19th century?) Reports of the former occurrence of the species on Raoul seem to be plausible enough, but they may refer to vagrant individuals of another subspecies of the buff-banded rail. Peruvian rail, Rallus semiplumbeus peruvianus (Peru, 20th century?) A subspecies of the Bogota rail which is known from a single specimen collected in the 1880s. It may still exist. Western Lewin's rail, Lewinia pectoralis clelandi (southwestern Australia, late 1930s?) A subspecies of Lewin's rail not recorded since 1932 despite multiple surveys in the late 20th century. Assumption white-throated rail, Dryolimnas cuvieri abbotti (Assumption, Astove and Cosmoledo, Aldabra, early 20th century) A subspecies of the white-throated rail. Jamaican wood rail, Amaurolimnas concolor concolor (Jamaica, West Indies, late 19th century) The nominate subspecies of the uniform crake declined rapidly and became extinct following the introduction of the small Indian mongoose (Urva auropunctata) to Jamaica in 1872. Intact rail, Gymnocrex plumbeiventris intactus (Melanesia, 20th century?) A doubtfully distinct subspecies of the bare-eyed rail known from a single specimen, c. mid-19th century, either from the Solomon Islands or New Ireland. It may still exist. Bornean Baillon's crake, Zapornia pusilla mira (Borneo, 20th century?) A subspecies of Baillon's crake known from a single 1912 specimen and not found since; it may be extinct, but the species is hard to find. Moroccan bustard, Ardeotis arabs lynesi (Morocco, late 20th century?) A subspecies of the Arabian bustard. Last observed in 1993 at Lac Merzouga / Lac Tamezguidat. Luzon sarus crane, Antigone antigone luzonica (Luzon, Philippines, late 1960s) A subspecies of the sarus crane which is not always accepted as valid by all authorities, possibly because the existing specimens have not been thoroughly studied since it was first described.
Gruiformes Rails and alliesprobably paraphyletic Goldman's yellow rail, Coturnicops noveboracensis goldmani (Mexico, late 20th century?) A subspecies of the yellow rail that has not been recorded since 1964 and has lost much of its wetland habitat since then. Macquarie rail, Hypotaenidia philippensis macquariensis (Macquarie Islands, Southwest Pacific, 1880s) A subspecies of the buff-banded rail. Raoul Island banded rail, Hypotaenidia philippensis ssp. (Raoul, Kermadec Islands, Southwest Pacific, late 19th century?) Reports of the former occurrence of the species on Raoul seem to be plausible enough, but they may refer to vagrant individuals of another subspecies of the buff-banded rail. Peruvian rail, Rallus semiplumbeus peruvianus (Peru, 20th century?) A subspecies of the Bogota rail which is known from a single specimen collected in the 1880s It may still exist. Western Lewin's rail, Lewinia pectoralis clelandi (southwestern Australia, late 1930s?) A subspecies of Lewin's rail not recorded since 1932 despite multiple surveys in the late 20th century. Assumption white-throated rail, Dryolimnas cuvieri abbotti (Assumption, Astove and Cosmoledo, Aldabra, early 20th century) A subspecies of the white-throated rail. Jamaican wood rail, Amaurolimnas concolor concolor (Jamaica, West Indies, late 19th century) The nominate subspecies of the uniform crake declined rapidly and became extinct following the introduction of the small Indian mongoose (Urva auropunctata) to Jamaica in 1872. Intact rail, Gymnocrex plumbeiventris intactus (Melanesia, 20th century?) A doubtfully distinct subspecies of the bare-eyed rail known from a single specimen, c. mid-19th century, either from the Solomon Islands or New Ireland. It may still exist. Bornean Baillon's crake, Zapornia pusilla mira (Borneo, 20th century?) A subspecies of Baillon's crake known from a single 1912 specimen and not found since; it may be extinct, but the species is hard to find. Moroccan bustard, Ardeotis arabs lynesi (Morocco, late 20th century?) A subspecies of the Arabian bustard. Last observed in 1993 at Lac Merzouga / Lac Tamezguidat. Luzon sarus crane, Antigone antigone luzonica (Luzon, Philippines, late 1960s) A subspecies of the sarus crane which is not always accepted as valid by all authorities, possibly because the existing specimens have not been thoroughly studied since it was first described