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03-09-2013, 21:03   #16
Galvasean
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Good point. Also, considering just how big Gastornis was they could have trampled small critters to death. Blunt trauma being a good weapon and all. That said, the isotope analysis is very compelling evidence for herbivority (is that a word).
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03-09-2013, 23:55   #17
Adam Khor
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I think the word is herbivory :B

And true; now that I think about it, the secretary bird kills most of its prey- venomous snakes included- by trampling them :>
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05-10-2013, 21:32   #18
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Moa poop reveals their diet

http://www.sci-news.com/paleontology...moa-01431.html

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06-10-2013, 02:08   #19
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The Moa is a sad loss I feel. What a wonderful bird it must have been. Ditto the Elephant bird of Madagascar. And the Haart's Eagle too.
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06-10-2013, 18:35   #20
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It's weird to think that they were roaming around so recently.
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19-12-2013, 00:44   #21
Adam Khor
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Giant moa was not as robust, strong as believed

http://www.livescience.com/42076-gia...es-weight.html

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21-12-2013, 02:29   #22
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So Haast's eagle was perhaps not as powerful as we thought?
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22-12-2013, 01:01   #23
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Powerful enough to eat people if old Maori stories are to be believed
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22-12-2013, 01:05   #24
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Possible kiwi ancestor could fly, arrived from Australia

http://www.theguardian.com/science/2...ssil-discovery

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22-12-2013, 02:04   #25
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When I see mention of New Zealand I think Middle Earth.
But, given the distance between there and Australia, and the description of the proto-Kiwi as chicken sized - how likely would it be for a sufficient population to fly there but instead to independently evolve from the Moa.
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22-12-2013, 23:27   #26
Kess73
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Quote:
Originally Posted by Adam Khor View Post
Powerful enough to eat people if old Maori stories are to be believed


Would tend to believe that the Haast Eagle was capable of taking down very large prey.

Modern day Golden Eagles have been confirmed as having attacked and killed adult swans, adult foxes, adult badgers (American and Eurasian), adult reindeer, adult sheep, and even young cattle up to about 100kg.

A Haast Eagle would have been up to 50% or so heavier than a Golden eagle and it's remains suggest it was much more strongly build. Basically designed perfectly to take out larger prey than what a modern day Golden eagle can.

Cannot think of any reason why a large Haast eagle could not have attacked and killed a human. The initial strike from such a large raptor would leave a grown man in no position to be able to defend himself.
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22-12-2013, 23:30   #27
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Well as Aeschylus discovered to his cost, all eagles have to do is to divebomb using turtles.
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23-12-2013, 01:10   #28
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Quote:
Originally Posted by Kess73 View Post
Would tend to believe that the Haast Eagle was capable of taking down very large prey.

Modern day Golden Eagles have been confirmed as having attacked and killed adult swans, adult foxes, adult badgers (American and Eurasian), adult reindeer, adult sheep, and even young cattle up to about 100kg.

A Haast Eagle would have been up to 50% or so heavier than a Golden eagle and it's remains suggest it was much more strongly build. Basically designed perfectly to take out larger prey than what a modern day Golden eagle can.

Cannot think of any reason why a large Haast eagle could not have attacked and killed a human. The initial strike from such a large raptor would leave a grown man in no position to be able to defend himself.
I remember seeing a clip on youtube showing a golden eagle taking on a Grizzly bear, and winning despite the size difference. Didn't kill the bear of course, but had it running for it's life.
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23-12-2013, 03:47   #29
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Quote:
Originally Posted by Kess73 View Post
Would tend to believe that the Haast Eagle was capable of taking down very large prey.

Modern day Golden Eagles have been confirmed as having attacked and killed adult swans, adult foxes, adult badgers (American and Eurasian), adult reindeer, adult sheep, and even young cattle up to about 100kg.

Cannot think of any reason why a large Haast eagle could not have attacked and killed a human. The initial strike from such a large raptor would leave a grown man in no position to be able to defend himself.
A golden eagle could kill a human, if motivated enough. In central Asia golden eagles are trained to hunt wolves, which may not be as heavy as the cattle you mention, but are surely more dangerous game. The eagle uses one talon to shut the wolf's jaws close, and the other to hold it still. Apparently the hunters usually try to get to the wolf before the eagle can do much damage to the skin, but I think I do remember reading about the eagle itself doing the kill. In Africa, children have been mauled by crowned eagles and the skulls of babies/toddlers have been found in their nests (which would make them the only bird of prey that still see us as prey).

We also tend to forget that there was another eagle as large as the Haast's eagle in North America- it may have encountered humans as well, and was probably more similar to the golden eagle as it was used to hunting in open spaces, rather than forested areas like the Haast's.

Quote:
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Well as Aeschylus discovered to his cost, all eagles have to do is to divebomb using turtles.
Wasn´t that a bearded vulture?

Last edited by Adam Khor; 23-12-2013 at 09:08.
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23-12-2013, 12:35   #30
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Quote:
Originally Posted by Rubecula View Post
I remember seeing a clip on youtube showing a golden eagle taking on a Grizzly bear, and winning despite the size difference. Didn't kill the bear of course, but had it running for it's life.

They are also confirmed as predating on bear cubs ( Black and brown bears)
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