Another giant panda gave birth to a twin cubs in southwest China's Sichuan Province Wednesday, the second twin birth in four days in the province this year, keepers said Thursday.

Five-year-old mother, Na Na, in the Bifeng Gorge giant panda base in Ya'an City, Sichuan Province, gave birth to the first baby panda at 4:53 a.m. and the second at 5:08 a.m. Wednesday. Photo taken shows the newly born giant panda cubs.

Five-year-old mother, Na Na, in the Bifeng Gorge giant panda base in Ya'an City, gave birth to the first baby panda at 4:53 a.m. and the second at 5:08 a.m. Wednesday, said Huang Yan with the China Giant Panda Protection and Research Center.

The twins -- one weighing about 90 grams and the other 130 grams -- were both male.

"The cubs show strength when sucking milk and are energetic. They are in good condition," said Li Guo, a keeper.

It was the first delivery for Na Na. Keepers are nursing the cubs due to the mother's lack of experience.

As the cubs were born on the day with a rare solar eclipse, keepers said they were thinking about names for them in memory of the special event.

On Sunday, a giant panda named Li Li at a breeding center in Chengdu, capital of Sichuan, produced a twin female cubs, the first giant panda twin birth this year.

(Xinhua News Agency July 24, 2009)