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<span style="font-size: 12pt;">Oh well Parker, before DDT there was Blackleaf 40, The most</span>
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<span style="font-size: 12pt;">powerful </span>
<span style="font-size: 16px;">insecticide of its day. A product of tobacco!</span>
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<span style="font-size: 16px;">Folks have gone to sleep if that report woke them up!</span>
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<span style="font-size: 16px;">And folks still smoke - figure that one out?</span>
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<span style="font-size: 16px;">Paul</span>
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<span style="font-size: 9pt;">ne 16, 2019 at 5:37 PM Parker Donham <parker@donham.ca> wrote:</span>
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I asked Prof. Google about this, and she directed me to the following.
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<li>From Scientific American:<strong> Cigarette Butts in Nests Deter Bird Parasites</strong></li>
<li>From the Economist: Some birds use discarded cigarettes to fumigate their nests</li>
<li>From Nature: <strong>City birds use cigarette butts to smoke out parasites</strong></li>
<li>From the New Scientist:  <strong>From the New Scientist Birds use cigarette butts for chemical warfare against ticks</strong></li>
</ul> These reports in the popular press all seem based on a single study by by three Mexico City researchers published in Biology Letters. The Royal Society has an abstract (but the full paper is behind the usual unconscionable academic paywall): 
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<li>Incorporation of cigarette butts into nests reduces nest ectoparasite load in urban birds: new ingredients for an old recipe?</li>
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On Sat, Jun 15, 2019 at 12:17 PM Ken J MacAulay <
kenmacaulay@eastlink.ca> wrote:
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John there was a recent article on-line about wild bees using plastic to
<br/> line their  nests.  That article also mentioned birds using cigarette butts
<br/> in their nests to kill mites etc.  Like you, though, I can't remember if it
<br/> was on a news feed or a FaceBook article.  Here is a link to an article that
<br/> mentions the butt use at the end of the piece.
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https://www.nationalgeographic.com/environment/2019/06/wild-bees-building-homes-from-plastic/
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<br/> Ken MacAulay
<br/> Port Mouton, NS
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<strong style="font-size: x-small; font-family: monospace,monospace;">Parker Donh</strong>
<strong style="font-size: x-small;"><span style="font-family: monospace, monospace;">am</span></strong>
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<span style="color: #333333; font-family: monospace, monospace;"><span style="font-size: 13px;">  +1-902-565-5555</span></span>
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&l