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Latest Palaeognathae Stories

Extinct Moa Females Up To Three Times Larger Than Males
2013-04-10 13:30:01

Brett Smith for redOrbit.com - Your Universe Online Sexual dimorphism, in which male and females of the same species differ significantly in appearance, is fairly common among birds. Typically, the male of the species either towers over the female or is equipped with elaborate plumage, as in the case of the peacock. However, for New Zealand´s extinct, flightless giant moa, the roles were reversed, with the female often weighing three times as much as her male suitors....

2008-09-11 18:01:43

Ostriches, emus, kiwis and other winged non-flyers might seem to be birds of a feather, sharing similar evolutionary origins, but the story could turn out to be much weirder, with perhaps numerous flying ancestors. This group of birds, called ratites, has been viewed by biologists as part of a larger group (paleognaths) of mostly extinct birds that are key to understanding the early evolution of birds. All living ratites are found in the Southern Hemisphere and share features associated...

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2008-09-04 11:38:18

Large flightless birds of the southern continents "“ African ostriches, Australian emus and cassowaries, South American rheas and the New Zealand kiwi "“ do not share a common flightless ancestor as once believed. Instead, each species individually lost its flight after diverging from ancestors that did have the ability to fly, according to new research conducted in part by University of Florida zoology professor Edward Braun. The new research, which appears this week in the...


Latest Palaeognathae Reference Libraries

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2006-10-19 13:26:41

The Rhea is a large flightless bird native to South America. American Rheas live in grassland, savanna, scrub forest, chaparral, and even desert, but prefer areas with at least some tall vegetation. Darwin's Rhea lives in areas of open scrub in the grasslands of Patagonia and on the Andean plateau. It is classified as endangered throughout its range. The Common Rhea, Rhea americana, is not only the largest species of rhea, but also the largest bird in the Americas. Adults weigh up to 66...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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