Bai Yun gave birth in a nest of shredded bamboo at 1:15 p.m. Tuesday, said Don Lindburg, head of the zoo's panda team.

Chuang Chuang weighs 150 kilos (330 pounds), while his partner Lin Hui is a lithe 115 kilos (253 pounds), said Kannika Nimtragol, a veterinarian at the Chiang Mai zoo in northern Thailand.

Chuang Chuang, a male panda, and Lin Hui, a female panda, both of the China Giant Panda Research Center based in Wolong of Sichuan, will live in Thailand for 10 years.