Spenser.
Ravens seen on the left hand side of a person bode impending evil.
Sæpe sinistra cava prædixit ab ilice cornix.
Virgil, Ecl., i.
Ravens call up rain.
Hark
How the curst raven, with her harmless voice,
Invokes the rain!
Smart, Hop Garden, ii. (died 1770).
When ravens forsake a wood, it prognosticates famine.