[TowerTalk] Bye Bye Birdies

[Grant Saviers]

Patrick

Please suggest some stocking suppliers and models.

Grant KZ1W

On 1/4/2013 10:52 AM, Patrick Greenlee wrote:
> Plastic owls and rubber snakes work for some folks but are not 
> universally successful.
>
> Ultrasonic emissions have a much higher success record. Ultrasonic 
> waves are easy to "beam" directionally which permits a ground or near 
> ground level installation with the transducer(s) aimed up to where the 
> birds like to perch.  Aiming the sound upward keeps from disturbing 
> the dogs and cats.
>
> These devices are available COTS for relatively little money or easily 
> built by the electronic savvy. Mine have lasted for many years and 
> still work well.  Some of these devices offer choices on the type of 
> output.  A randomly occurring warble tone similar to the "yelping 
> style" public safety sirens (but of course in the ultrasonic spectrum) 
> seems to work best. Having it come on at random intervals works best 
> and keeps the birds from getting used to it.
>
> Inexpensive "tweeters" of the horn variety work well, especially if 
> the design lends itself to accepting a drain hole for water (well... 
> it is aimed up) Alternatively an enclosure with a hard flat reflective 
> surface to aim the beam upward will work.
>
> I have used these for many years with great success, not only for 
> birds but other pests as well when coupled with IR motion detector 
> including cats and dogs who used to think my yard a public restroom 
> and the odd skunk, raccoon, armadillo, or opossum.
>
> Patrick AF5CK
>
>
>
> iginal Message----- From: Jim Lux
> Sent: Saturday, December 29, 2012 5:16 AM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Bye Bye Birdies
>
> On 12/28/12 9:11 PM, Bob K6UJ wrote:
>> Another option for bird control is to get one of the plastic owls and 
>> put him up on the tribander.
>> My results were negative, evidently the birds in our area aren't 
>> scared of owls because the owl didn't help at all.
>> When i took it down I discovered the birds had crapped all over it.   
>> :-)
>>
>
>
> my in-laws experience with their vineyard was that birds are discouraged
> by novelty and change.  reflective ribbons one week, owls the next, etc.
>  That doesn't lend itself to antennas
>
> the other strategy which seems to work quite well is to make what ever
> it is "not sittable on".  those funky plastic spiky things or
> string/monofilament.
>
> Of course, neither of the latter are particularly easy to do on
> something like a multielement beam, especially if you want it to last
> for decades.
>
> For ordinary wire antennas.. I suppose, if you use strong enough copper
> clad steel, the birds can just sit on the wire forever.
>
>
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