The male (peacock) Indian Peafowl has iridescent blue-green or green colored plumage. The "eyes" are best seen when the peacock fans its tail. Like a cupped hand behind the ear, the erect tail-fan of the male helps direct sound to the ears. Peafowl are forest birds that nest on the ground but roost in trees. They are terrestrial feeders. Both species of peafowl are believed to be polygamous. However, it has been suggested that peahens entering a green peacock's territory are really his own juvenile or sub-adult young and that green peafowl are really monogamous in the wild.