This bird is Raven not a Crow(乌鸦). They are related but not same.
The difference between a rave and a crow is:
Raven: 30 years lifespan
The Raven is larger and average 25" tall (64 cm) with a four foot (122 cm) wing span and the beak is more slender and slightly longer than a crows. A raven's feathers shine with blue and purple tints when the sun hits them. The Raven's tail when spread meets at a triangular point.
Crow: 8 years lifespan
Crows are smaller and approximately 18" (46 cm) tall and their wing span is three feet (91 cm), similar to a dove. The beak is slightly thicker than a ravens. A crows feathers are flint black, may have lighter markings and duller than a ravens feathers. Crows can fluff their feathers into a mane and the tail curves evenly like a seashell.