mortisia:

The name “crow” is used for an entire family of birds, Corvidae, that includes the raven species. To put it simply, all ravens are crows; but crows can also be jays, magpies, or other birds. The terms “crow” and “raven” are actually very general, and can be used to refer to a number of different related birds in the Corvus genus.

The most noticeable difference between a crow and a raven is size; in most cases, the largest black birds in this genus are known as ravens. These two types of birds can also have some differences in their feathers. Both are iridescent black, although a crow’s older feathers are often lighter. A raven’s feathers shine with a blue or purple tint when the sun hits them. One of the most interesting differences between the two birds is in their vocalizations. A crow’s voice is often considered annoying and repetitive. A raven’s voice is more varied, however, and it’s able to imitate other birds and animals. Its most distinctive noise is a deep, croaking sound, which is often considered more musical than the call of the crow.

Crows are tolerant of noisy, populated areas with people and other animals. Ravens like privacy in their solitary hunt for insects, fruits, and carrion, so they’re more likely to be found in remote woods, meadows, and hills.