The Hooded Crow or Scald Crow showcases a combination of grey and black body coloring. On average, this crow grows up to 20 inches in length. 

It's often spotted in northern and eastern Europe and parts of the Middle East. They display a preference for woodland, farmland, and urban areas. Like the Carrion Crow, they are constantly scavenging but feed on mollusks, small mammals, nuts, etc.

The Collared Crow, distinguished by the white collar marking on its neck and chest, is significantly larger than most crow species, usually measuring up to 22 inches long. 

Typically found in China and Vietnam, the Collared Crow thrives in open habitats such as fields and wetlands. Its diet mainly consists of grains, seeds, insects, mollusks, and occasionally easily accessible eggs and carrion when food is scarce. 

In 2018, IUCN declared them as vulnerable species because of agricultural intensification that kills most of their prey and direct persecution by humans2.

The White-necked Crow is distinguished by its black plumage, except for a patch of white stretching from its throat to its chest. The lighter hue is hidden since it only occurs on the base of their neck feathers, which are rarely seen.

Roughly the size of a small raven, it measures about 17 to 18 inches long. It boasts a large, slightly curved bill and red iris. 

This species primarily dwells in forests and woodlands across specific regions of the Caribbean, notably Haiti and the Dominican Republic. Due to agricultural conversion, hunting, and pest control, this type of crow is already extinct in Puerto Rico. Overall, White-necked Crows are considered vulnerable species by the IUCN.

The Grey Crow, also known as the Bare-faced Crow, sports a predominantly black plumage with a noticeable light grey patch at its neck and underside. It also has a bare, pinkish face and blue eyes. It measures 16-18 inches in length, similar to a medium-sized raptor. 

Primarily found in New Guinea and some nearby islands, this crow species thrives in many habitats, from coastal areas to mountain forests. Their diet is varied: fruits, seeds, and small animals.

The Carrion Crow stands around 19-20 inches tall, boasting an all-black appearance that extends to their strong, stout bill and legs. Their glossy plumage exhibits hints of green and purple sheen. 

You'd commonly find Carrion Crows stretching from Scandinavia to Spain across Western Europe. They adapt to numerous environments, from forests and fields to town centers.

As a predatory bird, their diet mainly comprises carrion, although they also eat insects, worms, fruits, and seeds. They also steal eggs and catch from other birds.

Fish Crows sport an all-black body, much like its relatives. It typically measures 14 to 16 inches in length. This species' distinguishing feature is its short, nasal, muffled call, different from the typical caw of other species.

These types of crows live mainly in the coastal regions and inland waters in the United States. Its diet includes fish and other seafood, hence the name, along with seeds, insects, and occasional food scraps.

The Pied Crow, standing at roughly 20 inches tall, is a native to sub-Saharan Africa. It boasts a primarily jet-black, white chest and belly area. Its habitat spans grasslands, semi-deserts, and human-inhabited areas.

This omnivorous bird has a diverse diet comprising small mammals, insects, fruits, as well as waste from human settlements.

The Cape Crow, also known as the Black Crow, showcases a glossy black body spanning up to 20 inches.  It has proportionally longer body parts and slimmer bills than other crows. 

Endemic to the more arid regions of eastern and southern Africa, the Cape Crow's diet mainly consists of grains, seeds, and invertebrates.

The Jamaican Crow, or the Jabbering Crow, stands out with its 15-inch size and dull black feathers. Particularly distinctive is its vocal range, with unique calls like garbled jabbering.

Thriving in Jamaica's lush forests and mountainous regions, this type of crow feeds on fruits, small reptiles, and the catch or eggs from other birds.

The House Crow stands out with its grey neck and belly, contrasting its otherwise black feathers. With a size of around 16 inches, this crow species is on the smaller side. While primarily recognized in India, it has adapted to diverse regions, including Africa, Europe, and other parts of Asia.

A true omnivore, the House Crow consumes a range of diets from plant-based materials to various types of meat, often scavenging around human population centers.