The tail feathers of a peacock are called "train." The train is a stunning display of iridescent feathers that can span several feet in length, adorned with intricate eye patterns. Male peafowls, or peacocks, use their trains during courtship displays to attract females. When fanned out, the train creates a beautiful visual spectacle, showcasing the peacock's health and vitality. The train can consist of an array of colors, predominantly blue and green, reflecting light in different ways. The beauty of the peacock's train has made it a symbol of grace and beauty in various cultures.