A baby girl chimpanzee was born at the Detroit Zoo on World Chimpanzee Day over the weekend.Weighing 4 pounds, she was born shortly after midnight Saturday and named Jane, in honor of Jane Goodall, the renowned primatologist and anthropologist.World Chimpanzee Day recognizes the day in 1960 that Goodall first arrived in what is now Gombe Stream National Park in Tanzania to study chimpanzees, zoo officials said.