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    <div class="moz-cite-prefix">Hi Heidi, <br>
      <br>
      the spikes Susan linked in her post are commonly applied all over
      Munich on all sorts of buildings; buildings with more complex
      façades are usually netted. As<br>
      pigeons are very clever birds it is definitely worth to follow
      John's recommendation to remove all nests first. If you apply
      these spikes on the ledges, make sure they are set densely enough.
      I have spotted some pigeons near our museum which are smart enough
      to balance themselves in between those spikes if they are too
      widely spaced.<br>
      <br>
      Scaring them off (loudly clapping your hands and shouting at them
      in combination with chasing them off with water loaded super
      soakers) usually works also very well - pigeons have a very good
      memory and usually avoid areas where they witnessed really scary
      situations (The house of my neighbour is invested with pigeons
      which have been breeding there since 2-3 years. Then they tried to
      spread; immediate neighbours used the spikes, when I saw them in
      our gable I scared them off - they never came back).<br>
      <br>
      If the façade should be too complex or too high, hiring a falconer
      might be another option. This also helps against impertinent
      crows.<br>
      <br>
      Best of success!<br>
      Dirk<br>
      <br>
      <br>
      Am 18.08.2017 um 17:50 schrieb Susan Gallagher:<br>
    </div>
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      cite="mid:33fac51f-8cd0-ba22-9e94-2963bae2ec3b@ptd.net">
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      <p>Not sure what you mean by spikes on the ledges, but have you
        heard of porcupine wire?</p>
      <p>It looks far crueler than it is...</p>
      <p><a class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nixalite.com_products_bird-2Dspikes&amp;d=DwMD-g&amp;c=cjytLXgP8ixuoHflwc-poQ&amp;r=LpYc_Z_iN1KRw0hheb3x6-8MJUMu482qfHowpGYJqwc&amp;m=MQVcGXYcqfmmgdpoN9JB9pj3Bl4u8IncimS84mIjcB4&amp;s=e_amHN8brSgre1FxI171Fo4Uc_vZezoDikR5DTpXRe8&amp;e=" moz-do-not-send="true">https://www.nixalite.com/products/bird-spikes</a></p>
      <p>That or a couple of nesting goshawks.</p>
      <p> <br>
      </p>
      <pre class="moz-signature" cols="72">*******************************************
Susan Gallagher, Chief Naturalist
Carbon County Environmental Education Center
151 East White Bear Drive
Summit Hill, Pennsylvania  18250
(570) 645-8597

<a class="moz-txt-link-abbreviated" href="mailto:sugal@ptd.net" moz-do-not-send="true">sugal@ptd.net</a>
<a class="moz-txt-link-abbreviated" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.carboneec.org&amp;d=DwMD-g&amp;c=cjytLXgP8ixuoHflwc-poQ&amp;r=LpYc_Z_iN1KRw0hheb3x6-8MJUMu482qfHowpGYJqwc&amp;m=MQVcGXYcqfmmgdpoN9JB9pj3Bl4u8IncimS84mIjcB4&amp;s=3MPqruU_jNe7fY5OcTWTQCWVxIdBCvuQ_B8-QQg6Y3U&amp;e=" moz-do-not-send="true">www.carboneec.org</a></pre>
      <div class="moz-cite-prefix">On 8/18/2017 5:01 AM, Heidi Fourie
        wrote:<br>
      </div>
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        cite="mid:003801d31800$aa87a7c0$ff96f740$@ditsong.org.za"
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          <p class="MsoNormal">Dear everyone,<o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal">The Ditsong: National Museum of Natural
            History is an old building with wide window ledges. Recently
            we have noticed that the pigeons will nest, roost and sit on
            the ledges making a huge mess. Some of the ledges have
            spikes, but this is an even bigger attraction for the
            pigeons. The mess has become a problem as the pigeons now
            flock to this specific building. Our resident cats we think
            have enough mice and rats to contend with and the pigeons
            mostly stay up on the fourth floor roof or window ledges.<o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal">Is there a solution for this problem,
            please any advice will do.<o:p></o:p></p>
          <p class="MsoNormal">Regards,<o:p></o:p></p>
          <p class="MsoNormal">Heidi<o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal">Dr H. Fourie (Curator)<o:p></o:p></p>
          <p class="MsoNormal"><span style="mso-fareast-language:EN-ZA">Karoo
              Section<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="mso-fareast-language:EN-ZA">Vertebrate
              Department<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="mso-fareast-language:EN-ZA">Ditsong:
              NMNH<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="mso-fareast-language:EN-ZA">P.O.
              Box 413, Pta, 0001<o:p></o:p></span></p>
          <p class="MsoNormal"><o:p> </o:p></p>
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    <pre class="moz-signature" cols="72">-- 
Dirk Neumann

Tel: 089 / 8107-111
Fax: 089 / 8107-300
email: Dirk.Neumann(a)zsm.mwn.de

Postanschrift:

Staatliche Naturwissenschaftliche Sammlungen Bayerns
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Besuchen Sie unsere Sammlung:
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---------

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Tel: +49-89-8107-111
Fax: +49-89-8107-300
email: Dirk.Neumann(a)zsm.mwn.de

postal address:

Bavarian Natural History Collections
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