Occasionally peafowl appear with white plumage. Although albino peafowl do exist, this is quite rare and almost all white peafowl are not, in fact, albinos: they have a genetic mutation called leucism which causes an overall reduction in pigment which, in peafowl, causes a complete lack of pigment in their plumage but still leaves them with blue eyes; by contrast, true albino peafowl have a complete lack of melanin and therefore have white plumage but also an albino's characteristic red or pink eyes. Leucistic peachicks are born yellow and become fully white as they mature. Peafowl are omnivores and eat most plants parts, flower petals, seed heads, insects and other arthropods, reptiles, and amphibians.