Common Ostrich (Struthio Camulus): The ostrich is a large, flightless bird - the largest living bird on earth. When fully grown it weighs over 120kg. The male ostrich has soft black feathers on its back with white primary feathers on its wings and tail, making it easy to spot. Females and young ostriches have brown feathers for camouflage. Both males and females have bare necks and thighs. Ostriches have long necks, small heads, large eyes, long, powerful legs, and two toes on each foot. Ostriches are normally found in low rainfall areas. They are not social in nature and normally travel in singles, when found in pairs they are not cohesive. They have great vision and because of their strong legs, they can run at 70 km per hour. Their life expectancy is more that 40 years.