In a cramped, dimly lit room, three women stare at a bank of blinking video monitors. Each of the six screens shows, from a slightly different angle, a black-and-white ball of fluff—Tai Shan, the giant panda cub born last summer at Smithsonian’s National Zoo. Every two minutes, at the ring of a bell, the volunteer researchers write down what the cub is doing. Ding! Sleeping. Ding! A yawn. Ding! The right front paw twitches. For the first two months of Tai Shan’s life, Zoo staff and volunteers monitored him 24 hours a day. He is one of the most closely studied pandas in history.
He’s also one of the capital’s biggest celebrities. In December, when the cub made his public debut, 13,000 free tickets to see him were snapped up on-line in two hours. Fans lined up in subfreezing temperatures before the ticket booth opened for a chance at the additional 60 tickets handed out each day. More than 200,000 people voted on the cub’s name—Tai Shan (tie-SHON) means “peaceful mountain”—while millions logged onto the Zoo’s live “panda cam” (nationalzoo.si.edu/Animals/GiantPandas).
The Zoo’s first surviving panda cub, and only the fourth nationwide, Tai Shan “is the culmination of a decade of collaborative research between the United States and China,” says David Wildt, chairman of the Zoo’s reproductive sciences department. In 2005, twenty-one cubs born in captivity survived (two in the United States, one in Japan and the rest in China), more than twice as many as survived in 2004 and more than any other year to date. That achievement, along with new panda reserves and other conservation measures in China, are upping the odds that one of the world’s most endangered—and most beloved—creatures will survive, not just in captivity but in the wild.
As recently as two decades ago, the panda’s future looked bleak. Restricted to remote, mist-shrouded bamboo forests in mountainous southwestern China, the bears had lost more than half of their habitat by the late 1980s. For centuries, logging and farming had pushed pandas to steeper and higher terrain. The species’ population was down to an estimated 1,000 animals scattered among two dozen isolated groups. Although another hundred or so pandas were kept in Chinese breeding centers, their reproductive rate was so low they offered little hope for replenishing dwindling numbers. By 1997, only 26 percent of captive pandas had ever bred.
Pandas are notoriously difficult to breed. Females ovulate just once a year and remain fertile for only one or two days. Most captive males, meanwhile, are either uninterested in sex or are so aggressive that they pose a danger to fertile females. Even when both partners seem willing, males are often unable to consummate the affair. It was a decade before the Zoo’s first panda pair, Ling-Ling and Hsing-Hsing, finally mated, in 1983, after years of fumbling, misdirected embraces. Ling-Ling and Hsing-Hsing—goodwill gifts from China commemorating President Richard Nixon’s 1972 visit—produced five cubs during their two decades together at the Zoo, but none lived longer than a few days.
In the 1970s, scientists at the Beijing Zoo pioneered techniques to artificially inseminate pandas, and they produced their first cub in 1978. But the procedure had a high failure rate, and only a small percentage of the cubs born in captivity in China, whether conceived artificially or naturally, survived as long as a year. The bear’s prospects began to look up in 1996, when Chinese officials invited a group of U.S. scientists experienced in breeding other endangered species to collaborate on giant panda research. The United States was to provide much of the science and technical know-how, while China would contribute knowledge gained through decades of panda studies and, of course, provide the actual animals. “We jumped at the opportunity,” recalls National Zoo reproductive physiologist JoGayle Howard, who had logged countless hours trying to make Ling-Ling a mom.
Beginning in 1998, U.S. scientists began traveling regularly to China, where they and their Chinese colleagues assessed the health, reproduction, genetics, behavior and nutrition of 61 animals at China’s three largest breeding centers, in Wolong, Chengdu and Beijing. The survey’s most surprising finding was that 80 percent of the pandas, even those that had been dismissed as “poor breeders,” were in fact “healthy, reproductively competent animals that had potential to contribute to the captive population,” says Wildt. A decade later, most of those animals are indeed contributing, thanks to the surge in panda science spawned by the collaboration. “Today,” Wildt adds, “we know more about the biology of the giant panda than we do about any other endangered species in the world.”
The giant panda is a biological oddity. A member of the bear family, Ailuropoda melanoleuca (“black and white cat-footed bear”) diverged from the main bear lineage 15 million to 25 million years ago. In addition to its bold markings, the panda has a larger and rounder head than any other bear. Like other bears, pandas are solitary creatures, except for mothers and their cubs, which stay together for up to two years. The most unusual thing about the giant panda is its diet. Unlike other ursids, which rely at least in part on insects, fish, mammals or other meat, pandas are vegetarians. Stranger still, 99 percent of the bear’s diet consists of bamboo, a grass. A panda might appear well suited to its bamboo diet. The animal’s large jaw is equipped with powerful chewing muscles and large, flat molars that grind down the tough grass. Its paws sport opposable “thumbs”—actually elongated wrist bones—allowing a panda to hold a bamboo stalk while munching it. (The animals usually do this while seated in a remarkably human-like position, one of the traits people find so appealing about pandas.) But a panda’s digestive system lacks the specialized gut that cows and deer have to break down grass efficiently. This means the bears must spend about 14 hours a day eating up to 40 pounds of bamboo. Adults weigh between 185 and 245 pounds. Because pandas aren’t able to accumulate much fat, they cannot afford to take the winter off to hibernate, unlike Asiatic black bears that live in the same habitat. “The panda’s dependence on bamboo drives its entire physiology and ecology,” says National Zoo animal nutritionist Mark Edwards.



Comments
dear scientics,curators,and keepers i want to let you know what a good spot the panda cameras would like to celebrate in puerto rico i am crazy in love with mei xaing, tai shan and tian tain what fantastic job you,re were doing and what a difrence you were making thank you so much and make me a god bless you all and a merry chirstmas to you all love adriana p.s i want to adopt a giant panda
Posted by adriana on December 17,2007 | 07:24AM
hey im 12 and im doing a report on tai shan...does any1 know his exact weight when he was born? im havin trouble
Posted by darien on January 10,2008 | 03:58PM
I loved looking at the photos of Tai Shan. I love pandas and can't stand thinking about the problems they face. I hope they can find a mate for Tai shan and have a cub of their own
Posted by Madison Neil on February 21,2008 | 09:02PM
Wish Tai would never have to be sent to China. I am going to miss seeing him on the cam. I have seen him grow from being a baby to now going on 3 years old. He has been a joy to watch everyday. I love the way he circles round and round his yard looking for goodies. Wish I could visit the zoo someday and see him in person but I know that will never happen so he will continue to bring me much joy on the cam until he has to go to China. Hope you will be updating us on him while he is living in China. Thanks. It will be appreciated. I wish him the best while he makes his life in China. I love you, Tai. Boun Voyage to China. Happy BIrthday in July, sweetie.
Posted by Marie on March 28,2008 | 12:24PM
A question. Do pandas in the wild eat during the night?
Posted by Sue on May 2,2008 | 04:54PM
I love Panda because they are so cute (I think ,they are most lovely animal on the world)
Posted by Donchanok on June 20,2008 | 03:59AM
I am now only being introduced to the magical world of pandas. I hope Tai Shan will not be sent back to China, anyway, they were able to breed lots of baby pandas over there and giving Tai Shan to the US would not hurt them. Tai Shan now has a home and it would be a pity to send him back to China. I am appealing to the Chinese government to have a heart
Posted by Elanore Seeta on June 25,2008 | 05:46AM
Elanore what you are asking sounds reasonable to me. But an agreement would have to be kept I would think. Tai Shan will be missed by all that have followed his growth. He will be the darling of China. I will continue to keep watching him on the cam until the day he will no longer be with us. I know that I will shed some tears as I am sure that his keepers will too and all the staff involved in the raising of Tai.
Posted by Marie on June 27,2008 | 12:08PM
What exactly is meant by the turm "paw licking?" In the daily log by the panda keeper they refer to Mel Xlang as doing a lot of paw licking. Is this a sign of confirmed pregnacy?
Posted by Amy on July 27,2008 | 01:46PM
My greatest pleasure is watching the Pandas on the cam, I was thirteen when I first fell in love with them, I am now sixty four and still in love with them, I will be going out to see them in November. How lucky I am to others But this may be my last chance to see them.
Posted by Susan Wells on September 5,2008 | 03:08AM
Thanks so much for those who don't get to travel but get to watch the cam. All 3 pandas are just wonders of the world. Tai Shan is 3 years old and I understad that the Chinese government has agreement to take him away to China. But if you'll just ask people every where you'll get the general consensus that it's only fair for Tai Shan to stay at the the national zoo in D. C. for longer time. I know you observe him and you'll know whether or not he'll have any indication for readiness to breed. Well, there's the female 3 years old in San Diego. Please plea to the Chinese government to let these two meet and see if they'll mate. Then when China gets this union of the panda family to China, it would be just so precious and a all Chinese American panda family. That should be an appearling proposition. Will the two zoos work up an arragement with the Chinese goverment? I know the 2 panda parents are from 2 different reserves in China, but since they are both from the same province the 2 breeding centers ought to work out an agreement for these pandas. Please let the Americans and visitors enjoy the pandas a little longer! When we have time and can afford it we'll make trips to China to see them too as I have done so to China and visit the Pandas. Will you please advise us where to write to the Chinese to plea this case, please? Much Thanks, Anita
Posted by Anita C. on September 9,2008 | 10:12AM
I don't think that they will mate Tai with the 3 year old in San Diego because they are cousins both mothers have the same grandfather. Tai, Su LIn and Chen Chen resemble each other, don't you think?
Posted by Marie on September 11,2008 | 11:59AM
It is only another three more weeks for me to see the Pandas, and this is one of my big goals in life. I feel the same about Tai staying where he is, why move him as enough breeding is going on in China,and have they been able to release any Pandas back into the wild? I don't think they have. Please can you let me know if I am right or wrong. Susan Wells 2/11/08
Posted by Susan Wells on November 2,2008 | 03:50AM
I too will grieve the day that you have to send precious Tai to China. Since the earthquake's disruption of the work at the Wolong site, it seems the best thing for him will be to stay in the US. I watched him for 2 years, from the day his was born and fell in love. Now I've decided I definitely want to go to China to see and hopefully work with the Pandas for my 70th birthday...only 7 years to save up! Please keep him here...I know there must be some way. Maybe the new President can help! Thanks for these wonderful past 3 years......
Posted by Mary Rafter on December 23,2008 | 03:46PM
i came to the zoo last year and met the pandas. i love to watch the panda cam. i am 6 years old and want to be a panda doctor one day. thank you. clay
Posted by clay coleman on February 14,2009 | 07:00PM
I love those beautiful animals so much that I can't bear to think of them being sent into the wild after being taken care of so well by the great care takers there at the National Zoo, Lovingly, Mary F. Winke
Posted by Mary F. Winke on August 17,2009 | 02:18PM
I fell in love with Giant Pandas while watching Tai as a cub just learning to crawl and I fell in love with Tai Shan in a big way. Tai is very very special!!
I watched him a LOT through his first 2 yrs.
If you just can't get enough of him from the cam, or if you missed those early yrs, I highly suggest going to flickr.com and looking at the thousands of photos there.
Almost every moment of his life is there captured in brilliant photography. A great group with the best photos, I think, is Pandas Unlimited. You won't be disappointed with thier spectacular photos and videos.
Posted by Connie on October 31,2009 | 07:48PM