Illustration of an Egyptian vulture (Neophron percnopterus). This vulture is native to the Mediterranean, Turkey, parts of Africa and parts of India. At less than 60 centimetres in length it is small, but is well known due to its habit of using stones as tools to break open ostrich eggs. Its main food supply however is waste and refuse, which it often finds around human habitation. 18th century watercolor painting by Lady Elizabeth Symonds Gwillim (1763-1807). Lady Gwillim painted a series of about 200 watercolours of Indian birds. Produced about 20 years before John James Audubon, her work has been acclaimed for its accuracy and natural postures as they were drawn from observations of the birds in life.