San Diego Zoo's Giant Panda, Bai Yun, Gives Birth To A Healthy Cub

From The L.A. Times:

Late last month, the San Diego Zoo announced that its resident female giant panda, Bai Yun, was pregnant. Pandas' reproductive systems are still largely a mystery to researchers, so even zoo staff, who'd been monitoring Bai Yun extremely closely, didn't know when she would give birth.

Today just before 5 a.m., Bai Yun gave birth to what the zoo's senior research technician Suzanne Hall called a "vigorous, squawking" cub. For about 24 hours prior to the birth, Bai Yun had been restless, alternating between sleep and bouts of nest-building, Hall wrote on the zoo's blog. The cub's gender is not yet known.

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