Ravens in Norse Mythology

Ravens have often been featured in myths and legends, stories, poems, and religious beliefs. For example, the Norse God Odin was said to have a pair of ravens, Huginn (thought) and Muninn (memory). They were said to travel the world from early morning to late into the evening each and every day in search of information and news from every corner of this planet to bring back to Odin. Upon their return every evening they would whisper what they learned into his ear as they perched upon his shoulder. It is the story of Huginn and Muninn from which Odin's nickname, the raven-god was born. In Grímnismál the ravens are mentioned:
The whole world wide, every day,
fly Huginn and Muninn;
I worry lest Huginn should fall in flight,
yet more I fear for Muninn.
Another translation reads, Every morning the two ravens Huginn and Muninn, are loosed and fly over Midgard; I always fear that Thought may not wing his way home, but my fear for Memory is greater.1
  1. http://en.wikipedia.org/wiki/Hugin_and_Munin []