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Re: Avian extinction ref.



Passenger pigeons were actually elliminated largely due to the loss of American 
Chestnut forests.  Human predation was also obviously an important factor, but 
it was not the only (or even primary) one.  Additionally, there was a severe 
effect on reproduction from even a moderate loss of population numbers, as 
passengers apparently would not breed in groups that were not exceedingly large.

I cannot speak to eskimo curlews, that may indeed be a good example.

Thanks
--Mike Habib

----- Original Message -----
From: Christopher Taylor <ck.taylor@auckland.ac.nz>
Date: Sunday, October 10, 2004 4:18 pm
Subject: Re: Avian extinction ref.

> 
> > The importance of geographic range in at least modern 
> extinctions seems rather
> > independent of life history strategy.  That is, having a small 
> range makes a
> > species much more likely to be elliminated by a number of 
> factors.  This is
> > independent of life strategies.  I would be quite interested to 
> hear whether
> > any studies have shown evidence that a wide ranging species was 
> elliminated by
> > predation alone (or at least primarily).  I cannot think of any 
> off the top of
> > my head, but that doesn't mean it has not been done.
> > 
> 
> Passenger pigeons and eskimo curlews come to mind...
> 
>