The Andean condor (Vultur gryphus) is a South American bird in the New World vulture family Cathartidae and is the only member of the genus Vultur. They are the only New World vulture in which the males are visibly different than the females. They are mostly black, but males have a distinctive white "collar" around their necks and some white markings on their wings as well. Like their relatives, the California condors, Andean condors have bald heads. Andean condors are massive birds, among the largest in the world that are able to fly. Because they are so heavy (up to 33 pounds/15 kilograms), even their enormous 10-foot (3-meter) wingspan needs some help to keep them aloft. For that reason, these birds prefer to live in windy areas where they can glide on air currents with little effort. Andean condors are found in mountainous regions, as their name suggests, but also live near coasts replete with ocean breezes and even deserts that feature strong thermal air currents. These long-lived birds have survived over 75 years in captivity, but they reproduce slowly. A mating pair produces only a single offspring every other year, and both parents must care for their young for a full year.