Reference

Gerald Malle, Peter Wiedner (2016): Vögel beobachten in Kärnten, Where to watch birds in Carinthia, Austria (inklusive Artenliste der Vögel Kärntens, including checklist of the birds of Carinthia) – Carinthia II - Sonderhefte – Voegel_beobachten: 1 - 160.