Giant panda twins born to oldest first time mum in Hong Kong BBC.com19-year-old giant panda gives birth to twins, becoming the oldest known first-time panda mom CBS NewsGiant panda, 19, gives birth, becomes oldest first-time panda mom AOLAt 19, a Hong Kong Panda Is Finally a Mother The New York TimesHong Kong’s Ying Ying gives birth to twins, becoming oldest first-time giant panda mum South China Morning Post