>> reporter: a decade ago, frederick kolston lost federal funding. cooked to death when their enclosure heated to 140 degrees. kolston, now deceased, denied abuse accusations during a 1995 interview with cnn. >> we don't abuse animals. we try to treat them according to the regulations and the law and even beyond that. >> reporter: facing bankruptcy, he sold the facility and animals to save the chimps. it was the beginning of a great migration. for ten years, a dozen or so at a time have left the cold walls and steel bars for a new home, an island sanctuary. >> this is the last crew. >> reporter: the last crew. >> this is the crazy, young, wonderful, vivacious crew. >> reporter: they're mel row right now. joslyn checks her charges. >> what i want to do now is i want to go over each one and make sure they're healthy. >> reporter: bart was born here. he turned 20 january 14. like most of the chimps, his records are sketchy at best. >> we don't know what the study was for. we just know that he was in a study. >> reporter: experts say every chimp has its