Tribune photo by Nancy Stone
March 13, 2008
Kipper enjoys his breakfast at the Lincoln Park Zoo in Chicago in 2008. Kipper became very ill and was transferred to the zoo hospital March 23, 2009, where his condition worsened. He died the following morning, said Steve Thompson, the zoo's vice president of conservation programs. The mysterious upper respiratory infection swept through all seven members of the group he lived with late last week.