You would think so, unless they've learned to associate that particular noi=
se with other threats. It would be interesting to see how they react to qui=
eter traffic, e.g much lower speed limits.=0D
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Peter Shute=0D
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Sent from my iPad=0D
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On 20 Nov 2013, at 12:45 am, "michael noble" <<loop=
>> wrote:=0D
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One wonders, would the birds be equally disturbed by any other sound source=
being replayed in a one minute loop on the same speaker system?=0D
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On Mon, Nov 18, 2013 at 5:25 AM, <<=
ience.com>> wrote:=0D
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Interesting article published on SeattlePi news -=0D
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http://www.seattlepi.com/news/science/article/Scientists-show-effect-of-tra=
ffic-noise-on-birds-4989142.php=0D
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"..Idaho scientists blasted the sounds of cars and trucks barreling past fr=
om a half-mile string of treetop loud speakers high on a ridgeline above Sn=
ake River Plain.......Songbird numbers declined by more than a quarter and =
some species disappeared almost completely. He says the work may be the fir=
st to isolate the effect of sound, eliminating other traffic-related distur=
bances from the equation of what scares birds away."=0D
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