Among the family of raven 42 species can be distinguished. The raven has a dodgy reputation. In mythology it is seen as a link between life and the realm of death. In medieval times raven were decried as companion of witches. For Britain they have a special significance: if they once leave the Tower of London, the kingdom will perish. Ravens are highly intelligent, capable to use tools and even outclass great apes in some fields. This calendar is a highlight for bird and animal lovers! Calvendo calendars are premium products - a bit more pricey than others but with added benefits: Our calendars always look beautiful on your wall because we produce them locally with premium paper and sophisticated spiral binding, ensuring easy turning of pages and flat hanging against the wall. A protective transparent plastic cover sheet provides added stability and each calendar comes in five languages. Treat yourself to a Calvendo calendar and you get something that looks better all year round.