Heligoland traps at Ottenby Bird Observatory in Ottenby Nature Reserve in Mörbylånga Municipality,  in Kalmar County, in south-eastern Sweden, located on the island of Öland in the Baltic Sea.
<a href="//commons.wikimedia.org/wiki/User:Simiha" title="User:Simiha">Sinikka Halme</a>
<span class="int-own-work" lang="en">Own work</span>