During a trip from October 08th till 13th 2012 to experience migrating birds on Helgoland several remarkable sighting could be noted. A Booted Warbler, Hippolais caligata, was seen at the red sandstone cliff at the southern corner of Helgoland, at the so-called “Kringel” on the 9th of October 2012. On the same day a Siberian… Continue reading Booted Warbler and other vagrants on Helgoland