Owls are considered to be custodians of knowledge and are attributed to legendary powers. The mysterious hunters of the night have always aroused an unbridled fascination in humans. In atmospheric as well as mystical photographs, this calendar documents the strength and wisdom of an extraordinary bird species. Like all Ackermann calendars produced exclusively in Germany and printed in cooperation with NatureOffice climate neutral on paper from sustainable forestry. European format: Monday Start, no grid.