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scientific advis 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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