There are many references to ravens in legends and literature. Most of these refer to the widespread Common Raven.
The raven is the national bird of Bhutan because it adorns the royal hat, representing the deity Gonpo Jarodonchen (Mahakala with a Raven's head); one of the important guardian deities of Bhutanese culture. It is the official bird of the Yukon and of the city of Yellowknife, Northwest Territories. Professional wrestler Scott Levy has gone by the ring name Raven for well over a decade. The "Baltimore Ravens" is the name of an American Football franchise based in Baltimore, Maryland.
Because of its black plumage, croaking call, and diet of carrion, the raven has long been considered a bird of ill omen and of interest to creators of myths and legends.
The raven was a common device used by the Vikings. Ragnar Lodbrok had a raven banner called Reafan, embroidered with the device of a raven. It was said that if this banner fluttered, Lodbrok would carry the day, but if it hung lifeless the battle would be lost. King Harald Hardrada also had a raven banner, called Landeythan (land-waster). In Norse mythology, the Ravens Hugin and Munin sit on the god Odin's shoulders and bring to his ears all the news they see and hear; their names are Thought and Memory. Odin sends them out with each dawn to fly over the world, so he can learn everything that happens. The bird also appears on the right hand side of the Coat of arms of the Isle of Man, a former Viking colony, where it also appears in local folklore. The Old English word for a raven was hraefn; in Old Norse it was hrafn; the word was frequently used in combinations as a kenning for bloodshed and battle.
According to Livy, the Roman general Marcus Valerius Corvus (c. 370-270 BC) had a raven settle on his helmet during a combat with a gigantic Gaul, which distracted the enemy's attention by flying in his face.
A raven is said to have protected Saint Benedict of Nursia by taking away a loaf of bread poisoned by jealous monks after he blessed it.
In Irish mythology, the goddess Morrígan alighted on the hero Cú Chulainn's shoulder in the form of a raven after his death. In other ancient Celtic mythology Ravens were associated with the Welsh god Bran the Blessed, (the brother of Branwen) whose name translates to "raven." According to the Mabinogion, Bran's head was buried in the White Hill of London as a talisman against invasion.
Over the years, a legend developed that England will not fall to a foreign invader as long as there are ravens at the Tower of London; the government now maintains several birds on the grounds of the tower, either for insurance or to please tourists (or both). This is often thought to be an ancient myth, but recent research has shown no trace of the legend before the 19th century and is now thought to be a romantic Victorian invention drawn from the story of Bran the Blessed (see above). In fact the Tower has been raven-less for long periods of time. They were last reintroduced after World War II. These birds have the primary feathers of one wing trimmed periodically to ensure that they will not leave.
As a carrion bird, also known to be eating dead humans (executed, or victims of warfare), ravens became associated with the dead and with lost souls, and thus in Sweden are known as the ghosts of murdered persons, and in Germany as the souls of the damned.
In the well-known ballad The Three Ravens, a slain knight is depicted from the point of view of ravens who seek to eat him but are prevented by his loyal hawks, hounds and leman.
In the Bible, ravens are mentioned on numerous occasions throughout the Old Testament. In the Book of Judges, one of Kings of the Midianites defeated by Gideon is called "Oreb" (עורב) which means "Raven".
In I Kings 17:4 God commands the ravens to feed the prophet Elijah. Job ponders who feeds the ravens in Job 38:41. King Solomon is described as having hair as black as a raven in the Song of Songs 5:11. In the New Testament as well, ravens are used by Jesus as an illustration of God's provision in Luke 12:24.