Any of 20 species of bare-headed, keen-sighted
New World vultures (family Cathartidae) are 24–28 in. (60–70 cm) long. Old World vultures (family Accipitridae) include the smallest (20 in., or 50 cm, long) and the largest vulture species. The cinereous, or black, vulture ( Aegypius monachus ), one of the largest living birds of flight, grows to about 40 in. (100 cm) long, weighs almost 30 lbs (13 kg), and has a 9-ft (2.7-m) wingspread. Most species eat carrion, garbage, and excrement but will occasionally eat a live animal. See also {{link=condor">condor , marabou , turkey vulture .