Black-crowned Night-Heron, Leon, Natthegre, Nycticorax nycticorax : Black-crowned Night-Heron, Leon, Natthegre, Nycticorax nycticorax  Gråhegre   Akerselva, Ardea cinerea, Badebakken, Gray Heron, Gråhegre, Oslo : Akerselva, Ardea cinerea, Badebakken, Gray Heron, Gråhegre, Oslo