Höckerschwan (<i>Cygnus olor</i>) auf dem Sauweiher in Isny im Allgäu.
<a rel="nofollow" class="external text" href="https://web.archive.org/web/20161023233801/http://www.panoramio.com/user/969909?with_photo_id=53105382">Richard Mayer</a>
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