Panda twins born at American zoo

An American zoo has announced that the mother of the only giant panda twins in the US has delivered a second set of twins.

Three years ago, Lun Lun gave birth to twin female cubs Mei Lun and Mei Huan at Zoo Atlanta in Georgia, and now she has given birth to a second set of twins.

The newborn cubs are yet to be named, and if they survive, they will be Lun Lun's sixth and seventh cubs.

Although Mei Lun and Mei Huan were born in the zoo, they could be returned to China in the Autumn, as all pandas born outside of China are still owned by the Chinese.

One of Lun Lun's newborn cubs Credit: Reuters

Panda pregnancies, which are rare in captivity and outside of China, are notoriously difficult to establish or predict, yet the new additions to the population are not the first to be born this year.

In China, twin panda cubs - male and female - were born at a breeding research base on August 9.

While the zoo will be keeping a close eye on Lun Lun and her newborn cubs, the rest of the world can watch a livestream of the mother and her babies over on Zoo Atlanta's website.