While there are several traits of a peacock, one of the most distinguishing traits is its colorful tail feathers. These feathers feature markings shaped like an eye in red, green, gold, blue and other colors and are used by males to attract a female mate.
The tail feathers of a peacock make up more than 60 percent of its body, according to National Geographic. Another distinguishing trait of the peacock is its green or blue body color, which is unlike other members of the pheasant family. Its body shape is long and slender with a long face featuring colors of black and white.