In Norse mythology, Huginn (from Old Norse meaning "thought" or "spirit") and Muninn (from Old Norse meaning "memory ") are the two messenger ravens that accompany Odin. At dawn, they leave and travel through the nine worlds and return the next morning to report to the god what they have seen and heard, whispering it in his ear.
In Snorri's Edda, Huginn and Muninn are mentioned in chapter 38 of Gylfaginning. In this text, Snorri specifies that the two ravens are perched on the god's shoulders, and tell him in his ear what they have seen or heard as they fly over the worlds from dawn until breakfast the next morning, "so he learns many tidings". Odin is also called Hrafnaguð ("raven god"), and Hrafnáss ("raven Aesir").
The raven is a symbol of wisdom. It can be seen as an intermediary between man and the world of the Gods. Thus, in Norse mythology, Huginn and Muninn maintain the link between the earthly universe and the spiritual life: the two ravens whisper in Odin's ear what they have seen in the world of men.
But the first symbolic meaning given to the bird relates it to death. A raven flying over a battlefield accompanies the Valkyries (those who choose the warriors destined to die and go to Valhalla) and signals to them the bravest warriors.
The many qualities attributed to the raven (wisdom, pragmatism, adaptability, foresight, fidelity, courage, etc.) by the Scandinavians only encouraged this population to respect these birds.
Similarities in the attributes of the raven can be found in Greek mythology. As the bird of Apollo, it has the full confidence of the god in the surveillance of the nymph Coronis.