Hugin and Munin
[mind and memory]. The two ravens that sit on the shoulders of Odin or Alfader.
“Perhaps the nursery saying, `A little bird told me that,' is a
corruption of Hugo and Munin, and so we have the old Northern
superstition lingering among us without our being aware of it.” —
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894