Maui Nui Ibises

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Maui Nui Ibises
reconstruction

reconstruction

Systematics
Class : Birds (aves)
Order : Pelecaniformes
Family : Ibises and spoonbills (Threskiornithidae)
Genre : Maui Nui Ibises
Scientific name
Apteribis
Olson & Wetmore , 1976

The Maui-Nui Ibises ( Apteribis ) are a genus of extinct flightless ibises from the Hawaiian Islands of Molokai , Lānaʻi and Maui . Maui Nui Ibises were obviously common on Maui in the past. The apteribis species could have fed on snails and, together with the rails, kept the snails significantly short. 2

The ibises probably only existed on the two islands of Maui and Molokai, which were connected to the larger island of Maui Nui during the last ice age in the Pleistocene due to the lower sea level at the time. Two bones from Apteribis species were determined by radiocarbon dating to be 1850 ± 270 and 7750 ± 500 years old. 1 2

species

So far, four species of the genus are known, two of which are not yet fully established.

  • Apteribis brevis is a flightless ibis that is only known from bone finds. It is smaller than the second species and was more likely to be found in the higher parts of the island. The epithet brevis means short and refers to the short beak and small size of this ibis. 2 3 4
  • There was probably a second species of apteribis on Maui, but this has not yet been officially described as the number of bones found was not considered sufficient. It is larger than Apteribis brevis and stayed at a lower altitude than the small form. 2 3
  • Apteribis glenos : A flightless ibis from Molokai, only known from bone finds. 2 3
  • In 2011 a fourth Apteribis species was mentioned from the island of Lānaʻi . 6th

Other flightless ibises

From Jamaica the flightless Jamaican ibis ( Xenicibis xympithecusthe ) was described, from Réunion the Réunionibis ( Threskiornis solitarius ), which is possibly identical to the Reunion solitaire. Both are extinct today 5 .

swell

  • 17. Helen F. James, Thomas W. Stafford, David W. Steadman, Storrs L. Olson, Paul S. Martin, AJT Jull, and Patrick C. McCoy: Radiocarbon Dates on Bones of Extinct Birds from Hawaii. doi: 10.1073 / pnas.84.8.2350 1987; 84; 2350-2354 PNAS
  • 28. Helen F. James and Storrs L. Olson: Descriptions Of Thirty-Two New Species Of Birds From The Hawaiian Islands: Part I. Non-Passeriformes. In: Ornithological Monographs No. 45 Published By The American Ornithologists' Union Washington, DC University of California. Berkeley, California 1991. ISBN 0-935868-54-2
  • 39. AN Iwaniuk, JE Nelson, HF James, SL Olson - Journal of Zoology, 2004 - Cambridge Univ. Press: A comparative test of the correlated evolution of flightlessness and relative brain size in birds . In: Journal of Zoology (2004), 263: 317-327 Cambridge University Press doi: 10.1017 / S0952836904005308
  • 4th55. William Suarez: Deletion of the Flightless Ibis Xenicibis from the Fossil Record of Cuba. In: Caribbean Journal of Science , Vol. 37, No. 1-2, 109-110, 2001
  • 5 Threskiornis solitarius in the endangered Red List species the IUCN 2011. Posted by: BirdLife International, 2008. Accessed November 16, 2011th
  • 6thCarla J. Dove and Storrs L. Olson: Fossil Feathers from the Hawaiian Flightless Ibis (Apteribis sp.): Plumage Coloration and Systematics of a Prehistorically Extinct Bird Journal of Paleontology; September 2011; v. 85; no. 5; Pp. 892-897; DOI: 10.1666 / 10-133.1