Purple heron (Ardea purpurea) squabs in their nest at the nature reservation “Wagbachniederung” in Waghaeusel, near Karlsruhe, Germany, 07 June 2020. The Wagbachniederung is an important breeding and resting place for breeding birds in Europe, which are endangered by extinction, and is one of the most important bird protection areas in Germany. (Photo by Ronald Wittek/EPA/EFE)
