The San Diego Zoo prepares to say farewell to two much-loved giant pandas—however, its conservation efforts on behalf of this iconic species will continue. In honoring the terms of the Zoo’s conservation loan agreement with the People’s Republic of China, 27-year-old female giant panda Bai Yun (pronounced bye yoon) and her son, 6-year-old Xiao Liwu (pronounced sshyaoww lee woo), will leave the San Diego Zoo in April and will be repatriated to their ancestral homeland.

San Diegans Ernest and Evelyn Rady have made a record-setting commitment in support of the San Diego Zoo’s Animal Ambassador program. The Radys have pledged $20 million, of which $15 million will be a challenge grant that must be earned with matching donations from other Zoo supporters.