An orphaned baby elephant walks through mud as tourists take pictures at the David Sheldrick Wildlife Trust Nursery within Nairobi National Park, near Kenya's capital Nairobi on April 21, 2013. The orphanage cares for baby elephants and sometimes baby rhinos which have been orphaned by poachers, or lost or abandoned for natural reasons. The orphaned elephants raised by the Trust are returned to join the elephant population in Tsavo National Park when they mature between eight to ten years old. (REUTERS/Darrin Zammit Lupi)