[NatureNS] Birds face longer migrations due to climate change

From: "Roland McCormick" <roland.mccormick@ns.sympatico.ca>
To: <naturens@chebucto.ns.ca>
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Date: Sun, 19 Apr 2009 16:41:08 -0300
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Hello Paul -
       A wonderful piece of writing, I agree with it 100%. 
Thank you.

Roland.

----- Original Message ----- 
From: "Paul S. Boyer" <psboyer@eastlink.ca>
To: <naturens@chebucto.ns.ca>
Sent: Sunday, April 19, 2009 12:00 AM
Subject: Re: [NatureNS] Birds face longer migrations due to climate change


> What I find objectionable is reporting speculation as fact.
> 
> I would agree that migration is a hard business, and every year  
> numbers of migratory birds do not survive the journey.
> 
> We have been in and out of an estimated 22 major climatic variations  
> in the last 2.4 million years, including four very major glaciations.   
> Each time, fauna and flora have had to adjust, and those who were  
> unable to adjust have presumably been winnowed out long since.  A very  
> minor change in world temperatures probably will not harm birds and  
> other wildlife.
> 
> If we consider the species which have become extinct since  
> colonization, in our area there are rather few.  We don't know what  
> became of the Labrador Duck: it seems to have been uncommon, and the  
> best guess is that molestation in its nesting area may have been a  
> factor.  The Ivory-billed Woodpecker lost its habitat due to drainage  
> of swamps, and destruction of its forest habitat.  The Passenger  
> Pigeon was killed in huge numbers right at its nesting sites, in a way  
> which eliminated it, even though it was one of the most common birds  
> on the Earth.  The Great Auk was also relentlessly persecuted in is  
> nesting area.
> 
> It we were to review all the cases, I think that it would be difficult  
> to find a single bird species in North America which has gone extinct  
> through climate variations.  By far more important are factors such  
> as: persecution while nesting; over-hunting for market; introduction  
> of alien species (competitors and predators); and destruction of  
> habitat.  There is also the matter of pesticides, which at one time  
> threatened the Osprey and the Bald Eagle; but we can report that both  
> those species have recovered markedly.  (I recently observed an eagle  
> nest which has been producing young for nine years, located in a  
> populated neighborhood in city of about 250,000 human inhabitants.)
> 
> Of the major threats to bird life which I just listed, all can be  
> controlled.  Climate cannot be substantially controlled; and the  
> proposals to attempt to do so are an attempt to administer a medicine  
> which is far worse than the supposed disease.  Can anyone really  
> believe that the world will cut carbon-dioxide emissions by 80% within  
> a decade, as some politicians have announced as a goal?  That is  
> absurd!  This is what disturbs me: that the global warming issue has  
> become not only politicized, but that it has become a state-supported,  
> established ersatz-religion.  It is propagated in the compliant media,  
> and taught uncritically to students even in early grade-school.
> 
> Perhaps I should not worry about this, because the public every now  
> and then gets beset by some such raging fad; and ultimately, one may  
> hope, everyone will learn the way things really work, and come back to  
> reality.  But in the meantime, do we have to make the lessons so darn  
> expensive?
> 
> 

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