Crows live a long time, and are monogamous. If the male crow dies, the female will never take another mate (compare this to the story of the turtledove). Crows take responsibility for feeding their offspring, and escort their young in flight. The crow’s voice predicts rain, and the crow is said to be able reveal ambushes and foretell the future. Crows lead flocks of storks when they cross the sea to Asia. When the crow finds a corpse, it first pecks out the eye.
Crow, from the Medieval Bestiary (via medievalthedas)
For musical reflection of this eye-pecking, see “The Twa Corbies.” Which is one of my favorite morbid traditional ballads.