Juvenile <i><a href="//commons.wikimedia.org/wiki/Delichon_urbicum" title="Delichon urbicum">Delichon urbicum</a></i>. Locality: <a href="https://en.wikipedia.org/wiki/Prost%C4%9Bjov" class="extiw" title="en:Prostějov">Prostějov</a>, Czech Republic.
<bdi><a href="https://www.wikidata.org/wiki/Q58300160" class="extiw" title="d:Q58300160"><span title="Czech malacologist and Wikipedian">Michal Maňas</span></a>
</bdi>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>