Ueno Zoo said Saturday it has moved a panda cub born Thursday to an incubator as its mother may be experiencing fatigue.
The male cub was found lying away from his mother, Shin Shin, at around 11:30 p.m. Friday. Staff warmed its body and later returned the baby to Shin Shin, but she did not pick him up and carried on eating bamboo sprouts. The cub weighs about 130 grams.
"Shin Shin has not slept since she gave birth. The reason she wasn't taking care of the cub could be fatigue," said Yutaka Fukuda, a vice director of the Tokyo zoo.
The cub is the first giant panda born at the nation's oldest zoo in 24 years and the first to be conceived at the facility through natural breeding. The zoo has monitored both the mother and baby 24 hours a day via a camera set up in the delivery room.
Public viewing of the cub is expected to begin in about six months and the zoo will likely solicit a name from the public — although it will also have to be approved by China, which loaned Shin Shin and her mate last year.