The Egyptian vulture (Neophron percnopterus) is the smallest of the four species of European vultures. Its small size (wingspan of 180 cm (5.9 ft.) and body length of 60 cm (2.2 ft.)) have lead to its other Bulgarian name: ‘lesser vulture’. The adults have white plumage with black flight feathers and featherless yellow-orange face. The crest of white, pointed feathers gives the bird its typical appearance. The tail is white and wedge-shaped. The young are dark brown with light feather tips. As they mature the dark juvenile feathers are gradually replaced with the typical white of the adults. The bird reaches adult plumage in its fifth or sixth year. In flight it can be mistaken for a white stork. The differences are the wedge-shaped tail and the short legs and neck.