Together, 乌 (wū, black) and 鸦 (yā, a type of bird) combine to form 乌鸦 (wūyā), literally “the black bird,” a descriptive and straightforward name for a crow.
In Chinese culture, the 乌鸦 is the archetypal symbol of bad luck. Its appearance or distinctive caw is seen as a harbinger of misfortune. This is in direct opposition to the magpie, 喜鹊 (xǐquè), which is a celebrated symbol of good fortune and happiness. If a magpie sings on your window sill, good news is coming; if a crow caws, you should be wary.
The term 乌鸦 is used both literally and figuratively, with its figurative uses being extremely common in daily life.