In Norse mythology, Huginn ("thought") & Muninn ("memory") are a pair of ravens that fly all over the world, Midgard, to bring information to the god Odin. In the Poetic Edda, a disguised Odin expresses that he fears that they may not return from their daily flights. The Prose Edda explains that Odin is referred to as "raven-god" due to his association with Huginn & Muninn, who are described as perching on his shoulders. Odin gave the ravens the ability to speak.
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Huginn and Muninn by DanielGovar.deviantart.com on @deviantART