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Ausgestorbener Vögel

  • Kartonierter Einband
  • 152 Seiten
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Quelle: Wikipedia. Seiten: 149. Nicht dargestellt. Kapitel: Moa, Elefantenvögel, Spätquartäre Avifauna, Moa-Nalos,... Weiterlesen
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Quelle: Wikipedia. Seiten: 149. Nicht dargestellt. Kapitel: Moa, Elefantenvögel, Spätquartäre Avifauna, Moa-Nalos, Eyles-Weihe, Haastadler, Waldweihe, Grallistrix, Nesotrochis Debooyi, Südinsel-Riesengans, Nordinseltakahe, Molokai-Langbeineule, Corvus Impluviatus, Aptornis, Kauai-Langbeineule, Finschs Ente, Chloridops, Waldmoa, Telespiza Ypsilon, Talpanas Lippa, Hemignathus Vorpalis, Huahine-Star, Ibiza-Ralle, Chatham-Rabe, Sylviornis Neocaledoniae, Schnepfenralle, Chatham-Ente, Niue-Nachtreiher, Hemignathus Upupirostris, Malacorhynchus Scarletti, Chloridops Regiskongi, Polynesischer Edelpapagei, Mangaia-Salangane, Megapodius Molistructor, Niue-Ralle, Oxyura Vantetsi, Coua Primaeva, St.-Croix-Ara, Mangaia-Ralle, Gallirallus Roletti, Madagaskar-Gans, Gallirallus Gracilitibia, Kanaren-Wachtel, Gallirallus Epulare. Auszug: The moa were eleven species (in six genera) of flightless birds endemic to New Zealand. The two largest species, Dinornis robustus and Dinornis novaezelandiae, reached about 3.7 m (12 ft) in height with neck outstretched, and weighed about 230 kg (510 lb). Moa are members of the order Struthioniformes (or ratites) although some sources also recognise these as the separate order Dinornithiformes . The eleven species of moa are the only wingless birds, lacking even the vestigial wings which all other ratites have. They were the dominant herbivores in New Zealand forest, shrubland and subalpine ecosystems for thousands of years, and until the arrival of the Maori were hunted only by the Haast's Eagle. All species are generally believed to have become extinct by 1500 AD, mainly due to hunting by Maori. Comparison of a kiwi, ostrich, and Dinornis, each with its eggThe kiwi were formerly regarded as the closest relatives of the moa, but comparisons of their DNA in a paper published in 2005 suggested moa were more closely related to the Australian emu and cassowary. However research published in 2010 found that the moa's closest cousins were not the emu and cassowary but smaller terrestrial South American birds called the tinamous which are able to fly. Although dozens of species were described in the late 1800s and early 1900s, many were based on partial skeletons and turned out to be synonyms. Currently, eleven species are formally recognised, although recent studies using ancient DNA recovered from bones in museum collections suggest that distinct lineages exist within some of these. One factor that has caused much confusion in moa taxonomy is the intraspecific variation of bone sizes, between glacial and inter-glacial periods (see Bergmann's rule and Allen's rule) as well as sexual dimorphism being evident in several species. The Dinornis seem to have had the most pronounced degree of sexual dimorphism, with females being up to 150% as tall and 280% as heavy as males-s

Produktinformationen

Titel: Ausgestorbener Vögel
Untertitel: Moa, Elefantenvögel, Spätquartäre Avifauna, Moa-Nalos, Eyles-Weihe, Haastadler, Waldweihe, Grallistrix, Nesotrochis Debooyi, Südinsel-Riesengans, Nordinseltakahe, Molokai-Langbeineule, Corvus Impluviatus, Aptornis, Kauai-Langbeineule
Editor:
EAN: 9781159167646
ISBN: 978-1-159-16764-6
Format: Kartonierter Einband
Herausgeber: Books LLC, Reference Series
Genre: Geowissenschaften
Anzahl Seiten: 152
Gewicht: 227g
Größe: H228mm x B154mm x T8mm
Jahr: 2011