The Cheer leader duck? ID please

[Fotografer]

<img src="http://i43.photobucket.com/albums/e375/Exfangman/141010StIves3.jpg" border="0" alt="" /></p>
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<p><img src="http://i43.photobucket.com/albums/e375/Exfangman/141010StIves5.jpg" border="0" alt="" /></p>
<p>Know by the locals as &quot;Bobble Duck&quot;</p>
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<p><img src="http://i43.photobucket.com/albums/e375/Exfangman/141010StIves6.jpg" border="0" alt="" /></p>
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<p><img src="http://i43.photobucket.com/albums/e375/Exfangman/141010StIves7.jpg" border="0" alt="" /></p>
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<p><img src="http://i43.photobucket.com/albums/e375/Exfangman/141010StIves4.jpg" border="0" alt="" /></p>
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<p>In the company on the river at St Ives of what look like cross bred mallards.</p>
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<p>Anyone know what it is please - the locals want to know.</p>
<p>&n