Old World vultures

Old World vultures belong to the family Accipitridae, which also includes eagles, buzzards, kites, and hawks.
Old World vultures are not closely related to the superficially similar New World vultures and condors, and do not share that group's good sense of smell. The similarities between the two groups of vultures are due to convergent evolution rather than a close relationship. They were widespread in both the Old World and North America, during the Neogene. Old World vultures are probably a polyphyletic group within Accipitridae, with Palm-nut Vulture, Egyptian Vulture and Lammergeier separate from the others.Both Old World and New World vultures are scavenging birds, feeding mostly from carcasses of dead animals. Old World vultures find carcasses exclusively by sight. A particular characteristic of many vultures is a bald head, devoid of feathers. If vultures had head feathers, they would become spattered with blood and other fluids when the vultures ate flesh from carcasses, and thus would be difficult to keep clean

Kite(Bird)

Kites are raptors with long wings and weak legs which spend a great deal of time soaring. In general they feed on carrion but may also take live prey.
They are birds of prey which along with hawks, eagles, Old World vultures and many others are in the family Accipitridae.
Together with less closely related groups such as New World vultures and Osprey, they make up the diurnal bird of prey order Falconiformes.

Harrier(Bird)

A Harrier is any of several species of diurnal birds of prey which fly low over meadows and marshes and hunt or harry small animals or birds (hence their common name). Most are in the genus Circus, the scientific name also arising from the circling movements male and female make when mating

Eagle

Eagles are large birds of prey which mainly inhabit Eurasia and Africa. Outside this area, just two species (the Bald and Golden Eagles) are found in North America north of Mexico, with a few more species in Central and South America, and three in Australia.
They are members of the bird order Falconiformes (or Accipitriformes, according to alternative classification schemes), family Accipitridae, and belong to several genera which are not necessarily closely related to each other in any sort of way.
Eagles are differentiated from other birds of prey mainly by their larger size, more powerful build, and heavier head and bill. Even the smallest eagles, like the Booted Eagle (which is comparable in size to a Common Buzzard or Red-tailed Hawk), have relatively longer and more evenly broad wings, and more direct, faster flight. Most eagles are larger than any other raptors apart from the vultures.