Biology:Gallirallus

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Gallirallus is a genus of rails that live in the Australasian-Pacific region. The genus is characterised by an ability to colonise relatively small and isolated islands and thereafter to evolve flightless forms, many of which became extinct following Polynesian settlement.

Taxonomy

The genus Gallirallus was introduced in 1841 by the French ornithologist Frédéric de Lafresnaye to accommodate a single species, Gallirallus brachypterus Lafresnaye.[1] This is the type species. The name is a junior synonym of Rallus australis Sparman, 1786, the weka.[2] The genus name is a portmanteau of the genera Gallus that had been introduced by Mathurin Jacques Brisson in 1760 for the fowl, and the genus Rallus that had been introduced by Carl Linnaeus in 1758 for the rails.[3]

The genus Gallirallus now includes species that were formerly placed in the genera Aptenorallus, Habroptila, Eulabeornis, Cabalus, and Hypotaenidia.[4] Based on genetic analyses that showed relatively shallow branch lengths and sometimes conflicting relationships,[5][6] the five genera have been subsumed into a broad Gallirallus.[7]

Description

Many of the rails, including the well-known weka of New Zealand, are flightless or nearly so. Many of the resultant flightless island endemics became extinct after the arrival of humans, which hunted these birds for food, introduced novel predators like rats, dogs or pigs, and upset the local ecosystems. A common Polynesian name of these rails, mainly relatives of G. philippensis, is veka/weka (in English, this name is generally limited to Gallirallus australis).

On the other hand, Gallirallus species are (with the exception of the weka) notoriously retiring and shy birds with often drab coloration.

Species

The genus contains 18 species. Of these 6 have become extinct in historical times.[7]

Image Common name Scientific name Distribution
120px Calayan rail Gallirallus calayanensis
(formerly in Aptenorallus)
Calayan Island (far northern Philippines)
120px Invisible rail Gallirallus wallacii
(formerly in Habroptila)
Halmahera (northern Moluccas)
120px Chestnut rail Gallirallus castaneoventris
(formerly in Eulabeornis)
Aru Islands (southwest of New Guinea) and coastal north Australia
120px Weka Gallirallus australis North Island, South Island, Stewart Island and satellites (New Zealand)
120px New Caledonian rail Gallirallus lafresnayanus
(formerly in Cabalus)
forest of New Caledonia (probably extinct; no definite records since 1890)
120px Lord Howe woodhen Gallirallus sylvestris
(formerly in Hypotaenidia)
Lord Howe Island (east of Australia)
120px Okinawa rail Gallirallus okinawae
(formerly in Hypotaenidia)
forest and edge from lowlands to hills of northern Okinawa (Ryukyu Islands, southern Japan)
120px Tahiti rail Gallirallus pacificus
(formerly in Hypotaenidia)
formerly Tahiti and adjacent eastern Society Islands; extinct, last reported 1800
120px Buff-banded rail Gallirallus philippensis
(formerly in Hypotaenidia)
Philippines to Australia and Pacific islands
120px Chatham rail Gallirallus modestus
(formerly in Cabalus)
formerly Chatham Islands; extinct, last reported 1900
120px Dieffenbach's rail Gallirallus dieffenbachii
(formerly in Hypotaenidia)
formerly Chatham Islands; extinct, last reported 1900
120px Pink-legged rail Gallirallus insignis
(formerly in Hypotaenidia)
forest of New Britain (southeastern Bismarck Archipelago)
120px Woodford's rail Gallirallus woodfordi
(formerly in Hypotaenidia)
Solomon Islands
120px Bar-winged rail Gallirallus poecilopterus
(formerly in Eulabeornis)
formerly Viti Levu and Ovalau, Fiji (western Polynesia); extinct, last reported 1973
120px Guam rail Gallirallus owstoni
(formerly in Hypotaenidia)
forest of Guam (southern Mariana Islands); extinct in the wild until successfully reintroduced into Rota (southernmost Northern Mariana Islands) and Cocos Islands (just south of Guam)
120px Wake Island rail Gallirallus wakensis
(formerly in Hypotaenidia)
formerly Wake Island; extinct, last reported 1944
120px Barred rail Gallirallus torquatus
(formerly in Hypotaenidia)
Philippines, islets off Sabah (Malaysia), Sulawesi and satellites and west New Guinea
Roviana rail Gallirallus rovianae
(formerly in Hypotaenidia)
New Georgia islands (west-central Solomon Islands)

Species extinct before A.D. 1500

Illustration of an unidentified extinct species (possibly G. vekamatolu) from Vava'u, 1793

Given recent taxonomic proposals that the weka is the only extant Gallirallus species, it is possible these may also belong to different genera, but are presently retained in Gallirallus due to uncertainty.[8]

References

  1. de Lafresnaye, Frédéric (1841). "Nouvelle espèces d'oiseaux" (in French, Latin). Revue Zoologique: 241–243 [243]. https://www.biodiversitylibrary.org/page/2362192. 
  2. Dickinson, E.C.; Remsen, J.V. Jr., eds (2013). The Howard & Moore Complete Checklist of the Birds of the World. 1: Non-passerines (4th ed.). Eastbourne, UK: Aves Press. p. 154. ISBN 978-0-9568611-0-8. https://archive.org/details/howardmoorecompl0001howa/page/154/mode/1up. 
  3. Jobling, James A.. "Gallirallus". The Key to Scientific Names. Cornell Lab of Ornithology. https://birdsoftheworld.org/bow/key-to-scientific-names/search?q=Gallirallus. 
  4. Dickinson, E.C.; Remsen, J.V. Jr., eds (2013). The Howard & Moore Complete Checklist of the Birds of the World. 1: Non-passerines (4th ed.). Eastbourne, UK: Aves Press. pp. 153-155. ISBN 978-0-9568611-0-8. https://archive.org/details/howardmoorecompl0001howa/page/153/mode/1up. 
  5. Garcia-R, J.C.; Lemmon, E.M.; Lemmon, A.R.; French, N. (2020). "Phylogenomic reconstruction sheds light on new relationships and timescale of rails (Aves: Rallidae) evolution". Diversity 12 (2): 70. doi:10.3390/d12020070. 
  6. Kirchman, J.J.; Rotzel McInerney, N.; Giarla, T.C.; Olson, S.L.; Slikas, E.; Fleischer, R.C. (2021). "Phylogeny based on ultra-conserved elements clarifies the evolution of rails and allies (Ralloidea) and is the basis for a revised classification". Ornithology 138 (4). doi:10.1093/ornithology/ukab042. 
  7. 7.0 7.1 AviList Core Team (2025). "AviList: The Global Avian Checklist, v2025". doi:10.2173/avilist.v2025. http://www.avilist.org/checklist/v2025/. 
  8. 8.0 8.1 Salvador, Rodrigo B.; Anderson, Atholl; Tennyson, Alan J.D. (2021). "An Extinct New Rail (Gallirallus, Aves: Rallidae) Species from Rapa Island, French Polynesia.". Taxonomy 1 (4): 448–457. doi:10.3390/taxonomy1040032. 
  9. 9.0 9.1 9.2 9.3 Kirchman, Jeremy J.; Steadman, David. (2007). "New species of extinct rails (Aves: Rallidae) from archaeological sites in the Marquesas Islands, French Polynesia.". Pacific Science 61 (1): 145–163. doi:10.1353/psc.2007.0008. http://www.highbeam.com/doc/1G1-154868123.html. (subscription required)
  10. 10.0 10.1 10.2 10.3 Kirchman, J. J.; Steadman, D. W. (2006). "Rails (Rallidae: Gallirallus) from prehistoric archaeological sites in Western Oceania". Zootaxa 1316 (1): 1–31. doi:10.11646/zootaxa.1316.1.1. https://www.mapress.com/zt/article/view/zootaxa.1316.1.1. 
  11. "Gallirallus huiatua; holotype". Collections Online. Museum of New Zealand Te Papa Tongarewa. http://collections.tepapa.govt.nz/objectdetails.aspx?oid=39840. 
  12. Steadman, David W.; Worthy, Trevor H.; Anderson, Atholl; Walter, Richard. (1 June 2000). "New species and records of birds from prehistoric sites on Niue, southwest Pacific.". Wilson Bulletin 112 (2): 165–186. doi:10.1676/0043-5643(2000)112[0165:NSAROB2.0.CO;2]. http://www.highbeam.com/doc/1G1-63789264.html. (subscription required)
  13. Steadman, D. W. (1986). "Two new species of rails (Aves: Rallidae) from Mangaia, Southern Cook Islands.". Pacific Science 40 (1): 27–43. 
  14. Worthy, Trevor H.; Bollt, Robert. (1 January 2011). "Prehistoric birds and bats from the Atiahara site, Tubuai, Austral Islands, East Polynesia.". Pacific Science 65 (1): 69–86. doi:10.2984/65.1.069. http://www.highbeam.com/doc/1G1-244405331.html. (subscription required)
  15. Kirchman, J. J.; Steadman, D. W. (2006). "New Species of Rails (Aves: Rallidae) From an Archaeological Site on Huahine, Society Islands". Pacific Science 60 (2): 281–-297. doi:10.1353/psc.2006.0007. https://bioone.org/journals/pacific-science/volume-60/issue-2/psc.2006.0007/New-Species-of-Rails-Aves--Rallidae-from-an-Archaeological/10.1353/psc.2006.0007.short. 
  16. A similar bird was found to live on nearby Vava‘u in 1793. Given that G. vekamatolu was flightless, this may just as well represent a related species.
  17. Kirchman, J.J.; Steadman, D. W. (2005). "Rails (Aves: Rallidae: Gallirallus) from prehistoric sites in the Kingdom of Tonga, including description of a new species.". Proceedings of the Biological Society of Washington 118 (2): 465–477. doi:10.2988/0006-324x(2005)118[465:rargfp2.0.co;2]. 
  18. "State Library of New South Wales". https://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?dps_pid=FL1610526&embedded=true&toolbar=false. 
  19. Worthy, Trevor H.; Burley, David V. (2020). "Prehistoric avifaunas from the Kingdom of Tonga". Zoological Journal of the Linnean Society 189 (3): 998–1045. doi:10.1093/zoolinnean/zlz110. https://academic.oup.com/zoolinnean/article/189/3/998/5628820. 
  • Data related to Gallirallus at Wikispecies

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