Luckily for the bats they operate at quite different frequencies:
Radar 3MHz-110GHz
Bats Hearing 14KHz (humans stop at about 20KHz) through to 100KHz
Do any birds use Echolocation or have ridiculously high frequency hearing?
Evan
On 5/17/07, Gregory Little <> wrote:
Good day birders
Yes I wonder if the bat detector was also picking up the radar as it
does the bat calls. I would imagine that if the radar was at the same
frequency as bat calls of a range of bat species then it "may" affect
their ability to navigate and hunt. Otherwise, common sense suggests
that the radar would have no more affect on the bats than it does on
people.
Greg
-----Original Message-----
From:
On Behalf Of Evan Beaver
Sent: Thursday, 17 May 2007 1:18 PM
Cc:
Subject: Re: [Birding-Aus] FW: [BIRDCHAT] Effects of Wind Turbines
I wonder if a basis for this RADAR theory was suggested, or if it was
just a guess? It seems far fetched to me that an animal could detect
EM radiation, despite their recorded excellent ability to detect high
frequency sound. Airports also have big noisy planes with turbines
that operate in the high revolution range and make a lot of noise. I
think this would be a serious deterrent.
A quick search of a couple of Journal Databases reveals nothing on the
topic what-so-ever.
Evan
On 5/17/07, John Penhallurick <> wrote:
> Hi all,
> Here's another post with a possible solution.
> John Penhallurick
> Canberra Australia
>
> -----Original Message-----
> From: The RIDERS
> Sent: Thursday, 17 May 2007 9:17 AM
> To: John Murray Penhallurick;
> Subject: Re: [BIRDCHAT] Effects of Wind Turbines
>
> Hi Chatters.
> It was recently
> reported that a Bat researcher noticed that his
> Bat Detector did not detect any bats around
> Winnipeg Airport Manitoba, Canada. He decided
> that it was the RADAR that was keeping them
> away. Thus it seems that a small trial of an
> angler's radar on the top of, or near a windfarm might keep the bats
away?
>
> Good Birding.
> Alf.
> Alf Rider.
> Forest.
> Ontario.
> Canada.
>
>
>
>
> At 08:49 AM 16/05/2007, you wrote:
> >Hi friends,
> >
> >In an article in the New Scientist I recently received (12
May,2007,p.4),
> it
> >was reported that although wind turbines did not seem to cause
signficant
> >problem for birds, it has been found in the US that the main vitims
of such
> >turbines are bats. The article speculated that possibly the high
frequency
> >noise from the turbine's gears might disrupt the bats' echolocation
system.
> >I find this very worrying. Any thoughts?
> >
> >
> >
> >John Penhallurick
> >
> >86 Bingley Crescent
> >
> >FRASER, A.C.T. 2615
> >
> >AUSTRALIA
> >
> >S 35° 11' 40.2"
> >
> >E 149° 03' 26.2"
> >
> >Home Telephone: (61 2) 6258 8428
> >
> >Mobile 0408 585428
> >
> >Please visit my website
> >
> >http://worldbirdinfo.net <http://worldbirdinfo.net/>
> >
> >
> >
> >
> >
> >
> >BirdChat Guidelines: http://www.ksu.edu/audubon/chatguidelines.html
> >Archives: http://listserv.arizona.edu/archives/birdchat.html
>
>
>
>
>
> www.birding-aus.org
> birding-aus.blogspot.com
>
> To unsubscribe from this mailing list,
> send the message:
> unsubscribe
> (in the body of the message, with no Subject line)
> to:
>
--
Evan Beaver
Lapstone, Blue Mountains, NSW
lat=-33.77, lon=150.64
==========www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
==========
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.467 / Virus Database: 269.7.1/807 - Release Date:
16/05/2007 6:05 PM
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.467 / Virus Database: 269.7.1/807 - Release Date:
16/05/2007 6:05 PM
--
Evan Beaver
Lapstone, Blue Mountains, NSW
lat=-33.77, lon=150.64
==============================www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
=============================
|
