Twin baby pandas venture outside for the first time


These twin baby pandas finally got to see the great outdoors this week.

Ya Lun and Xu Lun, who are nearly 7 months old, explored everything in sight in their outside habitat at Zoo Atlanta on March 24.

Read: Panda on the Run: Search Intensifies for Extremely Rare Red Panda After It Escapes From Zoo

Ya Lun, who is the adventurer of the pair, wasted no time climbing on rocks and playing with a rope while her sister Xu Lun was a bit more reticent, according to zoo officials.

Zoo officials said it's no surprise that the cubs' mom, Lun Lun, waited so long to let the babies out to play.

Read: 2 Meerkat Pups Emerge from Burrows Just in Time to Bask in Some Spring Sun

"Lun Lun followed this instinct with Ya Lun and Xi Lun, remaining with the cubs in behind-the-scenes dens until late December 2016, when she began exploring the option of taking the cubs into their dayroom habitat," a zoo official said.

The cubs are still getting comfortable outside, but they're definitely enjoying the spring weather.

Watch: Panda Cub Puts Arm Around Human Foster Dad for Adorable Selfie

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Baby Pandas born at Smithsonian
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Baby Pandas born at Smithsonian

Mei Xiang in her den with her cub on Sept. 21, 2015. (Photo via Smithsonian's National Zoo)

WASHINGTON, DC - AUGUST 23: In this handout provided by the Smithsonian's National Zoo, the second of two newborn Giant Pandas born August 22 is cared for by members of the panda team at the Smithsonian's National Zoo and Conservation Biology Institute August 23, 2015 in Washington, DC. The team is swapping each cub with the mother Mei Xiang, allowing each to nurse, while the other is bottle-fed and kept warm in an incubator. (Photo by Smithsonian's National Zoo via Getty Images)
WASHINGTON, DC - AUGUST 23: In this handout provided by the Smithsonian's National Zoo, the second of two newborn Giant Pandas born August 22 is cared for by members of the panda team at the Smithsonian's National Zoo and Conservation Biology Institute August 23, 2015 in Washington, DC. The team is swapping each cub with the mother Mei Xiang, allowing each to nurse, while the other is bottle-fed and kept warm in an incubator. (Photo by Smithsonian's National Zoo via Getty Images)
WASHINGTON, DC - AUGUST 23: In this handout provided by the Smithsonian's National Zoo, the second of two newborn Giant Pandas born August 22 is cared for by members of the panda team at the Smithsonian's National Zoo and Conservation Biology Institute August 23, 2015 in Washington, DC. The team is swapping each cub with the mother Mei Xiang, allowing each to nurse, while the other is bottle-fed and kept warm in an incubator. (Photo by Smithsonian's National Zoo via Getty Images)
WASHINGTON, DC - AUGUST 24: In this handout provided by the Smithsonian's National Zoo, one of two newborn Giant Pandas born August 22 is cared for by a member of the panda team at the Smithsonian's National Zoo and Conservation Biology Institute August 24, 2015 in Washington, DC. The team is swapping each cub with the mother Mei Xiang, allowing each to nurse, while the other is bottle-fed and kept warm in an incubator. (Photo by Smithsonian's National Zoo via Getty Images)
WASHINGTON, DC - AUGUST 23: In this handout provided by the Smithsonian's National Zoo, the second of two newborn Giant Pandas born August 22 is cared for by members of the panda team at the Smithsonian's National Zoo and Conservation Biology Institute August 23, 2015 in Washington, DC. The team is swapping each cub with the mother Mei Xiang, allowing each to nurse, while the other is bottle-fed and kept warm in an incubator. (Photo by Smithsonian's National Zoo via Getty Images)

Mei Xiang left her den Saturday, Sept. 5, around 3:10 p.m. to eat and drink. She ate more bamboo than she has in previous excursions since giving birth. Keepers expect Mei Xiang to gradually spend more time away from the den eating and drinking as the cub grows. While Mei Xiang was eating, veterinarians and keepers took the opportunity to give the cub another quick checkup. He weighed 409.6 grams, which was 119 grams more than he weighed on Sept. 2. His 297 percent weight gain is normal for a cub his age. Cubs at this stage usually gain between 40 and 50 grams per day. Veterinarians also listened to his heart and lungs, which all sounded normal. His eyes are still closed, which is normal. Cubs’ eyes generally open when they are 6 to 8 weeks old. He also had a full belly at the time of the exam and appeared to be healthy. (Photo via Smithsonian's National Zoo)

Mei Xiang and her cub on Sept. 3. (Photo via Smithsonian's National Zoo)

Mei Xiang sleeping in her den with her cub Sept. 18, 2015. (Photo via Smithsonian's National Zoo)

Mei Xiang left the den around 9 a.m., about 30 minutes after keepers replenished food in her enclosure on Sept. 12. She spent 15 minutes away from the cub, during which time he could be seen on the panda cam scooting around in circles. Keepers noted that the shape of his back saddle, the black marking on a panda’s back, resembles Tian Tian’s, his father. (Photo via Smithsonian's National Zoo)

Keepers weighed the giant panda cub Sept. 14, when Mei Xiang left her den. He weighed 881.5 grams or 1.9 pounds. (Photo via Erika Bauer/Smithsonian's National Zoo)

At a veterinary exam Sept. 17, the cub measured 31 centimeters from his head to the tip of his tail. From his head to the base of his tail he measured 27 centimeters. His right front leg was 10 centimeters long and his right hind leg was 9 centimeters long. Veterinarians reported that he has an excellent range of motion and is able to push up onto his front legs. Keepers have seen him scooting around the den using his front legs, but he is not walking yet. (Photo via Amy Enchelmeyer/Smithosonian's National Zoo)

At a veterinary exam Sept. 17, the cub measured 31 centimeters from his head to the tip of his tail. From his head to the base of his tail he measured 27 centimeters. His right front leg was 10 centimeters long and his right hind leg was 9 centimeters long. Veterinarians reported that he has an excellent range of motion and is able to push up onto his front legs. Keepers have seen him scooting around the den using his front legs, but he is not walking yet. (Photo via Amy Enchelmeyer/Smithsonian's National Zoo)

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