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Re: erect posture and its implications

---Human <100533.1710@compuserve.com> wrote:

> I suspect that a higher metabolism is advantageous in that it permits
> migration, leading to ability to continuously exploit available food
> sources, leading to occupation of all available ecological niches,

How does this follow?  The only migrating terrestrial animals I can
think of (off the top of my head) are herbivores.  Are there
terrestrial migrators that are insectivores?  Carnivores?  

> squeezing out the less effiicient more reptilian fauna. 

Crocodiles lying in wait for migrating wildebeest might disagree!  

How do you see this follow?  Are migrating animals stealing the
rodents from varanid jaws?  Plucking insects off the tongues of


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