In Andalucia, as in Eastern Europe, the Neophron occasionally nests upon trees.
Buck, Walter J., Wild Spain (Espa?a agreste)—Records...(2011)
Cathartes perenopterus and Neophron Niger are less frequent, and always solitary.
Harris, William Cornwallis, The Highlands of Ethiopia(2011)
Altogether the colouring of these two eggs reminded one of richly coloured types of Neophron's eggs.
Hume, Allan Octavian, The Nests and Eggs of Indian Birds,...(2010)