SAN DIEGO, Aug. 6 (UPI) -- A giant panda gave birth to her fifth cub, the 13th panda born in U.S. captivity, and the baby appears to be healthy and nursing, the San Diego Zoo said.
The pink, hairless cub -- weighing an estimated 4 ounces and about the size of a stick of butter -- was born to 17-year-old Bai Yun (pronounced BY-yuhn) just before 5 a.m. Wednesday, zoo officials said.
Zookeepers witnessed the birth on closed-circuit TV, said zoo veterinarian Meg Sutherland-Smith, in charge of the pandas.
Mother and baby "seem to be adjusting very well," zoo spokeswoman Yadira Galindo told United Press International Thursday. "The cub is quieter, which means it's nursing."
Officials will know the cub's sex and weight in two to three weeks, when doctors first examine it and check its vital signs, Galindo said.
They also won't name the cub for 100 days, keeping with Chinese tradition, Galindo told UPI.
The father is zoo panda Gao Gao (GOW-gow), who arrived at the zoo in 2003. The two mated in April, officials said.
Bai Yun already has given birth to four healthy cubs in the zoo's successful breeding program. Two are at the zoo and two are in a breeding program in China.
The newest cub will be on public view when it gains mobility in four or five months, Galindo toll UPI, but people can see the mother and baby live online at sandiegozoo.org/pandacam.
