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Yun Zi

222

Comparing Panda Brothers

Bai Yun seems to be keeping an eye on her cub in this Panda Cam screen shot.

Bai Yun seems to be keeping an eye on her cub in this Panda Cam screen shot.

Xiao Liwu is a very different cub from his older brother, Yun Zi, but in a good way. He is very smart and is the youngest cub to respond so well to us keepers. Yun Zi did not start shift training (learning to move on and off exhibit when requested) until he was a little older than Mr. Wu is now (9 months old).

The important thing to have with the training and shifting is a reward (usually food) motivation. Yun Zi enjoyed honey water, and he was really good at following Bai Yun when she went into the bedroom, and after he arrived in the bedroom, he would come to us for his reward for coming inside.

Mr. Wu has plenty of motivation with play to follow us to the shift door, but he has learned that the play ends at the door. And sometimes he seems to just want to be carried to the shift door, so we keepers can do all the work! When he starts eating diet items regularly, he will start being motivated to come inside when asked. Xiao Liwu now weighs 31.7 pounds (14.4 kilograms).

Jennifer Becerra is a senior keeper at the San Diego Zoo.

334

Yun Zi and Hammock Update

Here's another view of the new artificial tree.

Here’s another view of the new artificial tree.

It’s been great to see giant panda Yun Zi’s exhibit go through so many changes in such a short time, and we are not done yet! He will get a hammock. His old one is badly torn up—they don’t last forever with all the use they get. Our Exhibits Team is on the job making a new one, but we have to be patient. They are extremely busy with projects all around the San Diego Zoo. Also, as keepers, we need to find the perfect place to hang the hammock so he will both use it and remain visible for visitors.

It’s been an experience to see Yun Zi sleep at the top of his 15-foot tree—now he can see his mom and baby brother. He is also enjoying the new location of his “lounge chair,” and the guests can now see him up close. Tomorrow, our Horticulture Team is going to help us add new plants and sod to both exhibits. Yun Zi is also continuing his blood-draw training, so we will be able to get a blood sample without using anesthesia. He is excelling with all his training.

Jennifer Becerra is a senior keeper at the San Diego Zoo.

49

Yun Zi: Busy Panda Boy

Yun Zi ponders his next move.

Yun Zi was definitely a busy boy on Saturday, May 19! The keepers gave him plenty of enrichment to keep him occupied. He received a tub full of ice, two hard-plastic Boomer balls filled with carrots, yams, apples, and herbivore biscuits, and a burlap sack filled with hay.

As soon as the bedroom door opened, our young panda ran to the tub and began to go through the ice, rubbing the cubes all over his head. He then tipped the tub over, spreading the ice everywhere, and tumbled down the hill, bringing the tub with him. Our guests were enthralled and were laughing and snapping as many photos as they could! Yun Zi even chased his Boomer ball around the exhibit, almost like a kid chasing a soccer ball.

After a lot of playing and running around for almost two hours, he FINALLY took a nap. What a day in the San Diego Zoo’s Panda Trek!

Alyssa Medeiros is a panda narrator at the San Diego Zoo. Read her previous post, Gao Gao and the Tub.

21

Hello, Handsome Yun Zi!

Welcome back to the spotlight, Yun Zi!

It has been a couple of months, but I’m happy to report that giant panda Yun Zi is now on exhibit for guests to view. Sunday, May 13, was his first day back, and he was putting on quite a show for our lucky guests in the morning. A perfect Mother’s Day treat for our visiting mothers!

Since father Gao Gao was in that exhibit previously, Yun Zi spent the morning scent marking the entire exhibit. He also was running around and rolling around to show off and have fun. When the front viewing area was redone a couple of years ago, our keepers tried to keep panda youngsters in mind when they requested more climbing structures. Yun Zi is the perfect example of why that is so important for a young, growing panda. He was climbing, scent marking the tree and going all the way to the top to smell the air. It was really an amazing morning for our youngster!

Those who had not seen him in a while were shocked at how big Mr. Yun Zi has gotten. Currently, his weight is about 180 pounds, and he is looking like he is going to be rather tall as well. Since he is 2½ years old, he could potentially continue growing for a couple more years. But just like his parents, his weight can fluctuate with weather changes and different life changes (hormones). Many of our guests told me about being at the San Diego Zoo two years ago and seeing a little baby; they wondered what had happened to him. Just about all of them were astounded when I’d point to Yun Zi and say, “Here he is!”

If you get the chance, please come and visit him, and take a peak on the Panda Cam. As for mother Bai Yun, she has been moved into the north exhibit, which is currently closed to our guests, so that when we begin doing our thermal imaging on a regular basis she is easily accessible. Our first thermal imaging procedure has already taken place; Bai Yun cooperated beautifully, and we have nothing to report. Please remember that it can take a while for our researchers and vet staff to see anything that would indicate a pregnancy. Paws crossed!

Anastasia Horning is a panda narrator at the San Diego Zoo. Read her previous post, Panda Narrator at Safari Park.

27

Yun Zi Training

Yun Zi: What a quick learner!

I still cannot believe how big panda youngster Yun Zi is whenever I see him. He is by far one of our fastest growing cubs! He impresses me every day with how smart he is. And he teaches me patience when he would rather play than train.

The bears receive data points when they can hear a tone during a hearing study session. On April 19, Yun Zi correctly stationed when he needed to and touched his nose to the red circle when he heard a tone played, receiving his first data sound point during the hearing study. This may seem like a small feat, but he has been training for over a year for this study! I am very proud that he is coming along nicely with the training, and it will be even more exciting when we have a full range of data on him.

Never fret, Yun Zi fans, he will be on exhibit soon and back to redecorating. We don’t have a set date yet, as that depends on Bai Yun and when she wants her privacy. Yun Zi is very spoiled where he is right now, off exhibit, and spends a lot of time close to his keepers. So please be patient with us keepers, as we only do what is best for all of our animals to keep them happy.

Jen Becerra is a senior keeper at the San Diego Zoo. Read her previous post, What is Yun Zi Doing?

15

Yun Zi Surpasses Dad

Yun Zi explores December's snow.

I know many of our San Diego Zoo guests have missed seeing our youngest panda, Yun Zi. Rest assured that he is doing just fine and is still here at the Zoo! Yun Zi has access to our north exhibit during the day, and in the evenings he goes into a set of bedrooms that have sunrooms in case he feels the need to get some fresh air.

Believe it or not, the bears really don’t mind being off exhibit and in the back with keepers. Yun Zi enjoys watching the keepers work, make enrichment, and prep diets for the pandas. He definitely takes after his father, Gao Gao, in the respect: Gao Gao also enjoys the quiet environment, so being in the back with keepers is a nice change for him.

Yun Zi is growing very fast and has officially surpassed his father’s weight. On average, he is anywhere from 4 to 6 pounds (2 to 3 kilograms) larger than his dad, putting him around 174 to 176 pounds (78.9 to 79.8 kilograms). Our little Yun Zi is growing so fast and is becoming a very impressive-looking bear. Through different phases of his development he has taken after his siblings, and for right now he has long legs like his sister Zhen Zhen.

Keepers are training him to perform different behaviors, and for the most part he is eager to learn. Currently he has been working on extending his arm out for blood draws, which will help keepers and vets maintain his good health. There is no official word on moving him into the front viewing area or opening the north exhibit at this time, but check the blogs periodically for updates!

Anastasia Horning is a panda narrator at the San Diego Zoo. Read her previous post, Panda Pregnancy?

33

Bai Yun Scent Marks

Bai Yun explores her exhibit during December's snow day.

Panda Trek at the San Diego Zoo was full of excitement on Friday, February 17! Bai Yun was scent marking quite a bit that afternoon. She left markings along the ground at least a few times and also walked through the water in her pool. For the rest of the day she mostly ate and, of course, slept. At one point she dragged a very large piece of bamboo to the top of her rock cave. She then sat down and began to break the thick stalk of bamboo, impressing all of the observing guests.

Gao Gao was also on exhibit that day. After the keeper had replenished his food and cleaned his exhibit, he went on a “hunt” for his herbivore biscuits as well as the yams, carrots, and apples.  He seemed to climb under and even on top of his hammock to find his tasty treats. I also observed him climbing to the very top of the mock panda den to sit and have lunch, just as I’ve seen little Yun Zi do. Like father, like son!

Finally, once the sun started to go down and the Zoo was closing, both Bai Yun and Gao Gao went inside their bedrooms for a nice nap, which is always a great ending to a great day at Panda Trek.

Alyssa Medeiros is a panda narrator at the San Diego Zoo. Read her previous post, Panda Enrichment. 

62

Musical Chairs, I Mean Bears!

Yun Zi enjoys a holiday "tree" during snow days last month.

If you come to the San Diego Zoo’s Panda Trek right now you may see a familiar face on exhibit. It’s Yun Zi! Currently we have the two boys out for public viewing as we continue construction projects in Panda Canyon, so we have shifted Bai Yun into our indoor area where she has access to her bedroom, sun room, and garden room. Our keepers say that she is loving life, enjoying the quiet time to herself, and eating quite a bit.

Outside, however, Yun Zi is making his presence known. One his first day back in the main viewing area he was re-scenting the enclosure that Gao Gao is usually in. He had a busy day performing handstands on the walls, trees, and, of course, his water dish. He was exhibiting some great behaviors, covering up another male’s scent!

Yun Zi now weighs 158 pounds (72 kilograms) and is filling out nicely. He is eating very well and I think he looks very impressive. Yun Zi is doing training with his keeper as often as possible so that as he gets bigger and older we can perform some of the same husbandry activities as we do for his parents, such as blood draws and ultrasounds.

Gao Gao is also doing very well. He has moved into Bai Yun’s normal enclosure (the left-side exhibit), and the first day he was also re-scenting the walls. As Bai Yun doesn’t do handstands like males do, most of Gao’s time was spent marking the ground and the top of the cave where she likes to sleep. Gao Gao is currently at 165 pounds (75 kilograms) and has been enjoying his panda bread. As some of you know, he has had a few dental issues, something older pandas often experience, but is doing well. The bread is offered to increase the amount of fiber in his diet by incorporating bamboo in a softer form. He currently gets very thin bamboo, and his panda bread is being mixed with some of those yummy leaf eater biscuits to add taste and, of course, nutrition.

The boys have not been too curious about the bear next door, although I have seen each put his head back, smelling the air. Of course, there could be a number of things to smell, but having another male that close should let us see some interesting behavior in the future. As Gao Gao is not much of a climber, it will most likely be Yun Zi who will be looking over the wall. Yun Zi is a very good climber, and when Bai Yun was next door, he would often climb up the tree and smell the air. Bai Yun has never really exhibited any interest in her son next door. I know for some that may seem cold, but these animals are naturally solitary and really do prefer to be by themselves. Watching them on a daily basis, I can honestly say that they thrive in their natural state.

Come see Yun Zi soon, and please don’t mind the construction going on right now!

Anastasia Horning is a panda narrator at the San Diego Zoo. Read her previous post, Construction in Panda Trek.

40

Not-So-Cold Winter for Pandas

Yun Zi enjoyed snow day last month.

Many of our San Diego Zoo visitors have been surprised at how active our pandas have been. It doesn’t really get that cold here in San Diego; therefore, our bears don’t experience the winter season like cold-weather bears. Giant pandas do not hibernate in the wild, and here at the Zoo we don’t see that behavior, either. Typically, if the weather does get cold, we notice an increase in the pandas’ intake of bamboo, and we see their weight increase by up to 15 pounds (6.8 kilograms). This year, we are seeing a fairly slow increase of weight in Yun Zi, and our adults are staying relatively stable, weight-wise.

As for our pandas’ activity levels, everyone is a little different. Bai Yun has been taking this time away from cubs to sleep and relax, and it’s funny how many moms that come to the Zoo can entirely relate to her! She has been eating quite a bit, but then again she always did. This is the first winter that she has not had a cub with her since the winter of 2002. I know so many of you are wondering if we are going to breed Gao Gao and Bai Yun again, and we cannot answer that at this time.

Gao Gao has been up to his normal antics, eating whenever he gets the chance and taking a nice nap in the hay or shavings that our keepers have provided. He is eating his bamboo plus his regular extras: apples, carrots, yams, and leaf eater biscuits. He is also eating panda bread, which is made of ground-up bamboo, and our keepers sometimes put the leaf eater biscuits in the bread as well. Overall, Gao Gao is doing well.

Yun Zi has been on a roller coaster of active levels and naps. Since he is still young, and still growing, we will continue to see his activity levels fluctuate until he is full grown. This past Tuesday, he moved to the front viewing area and Gao Gao was moved into the back, and we had quite a bit of scent marking and interest in what and who was in there before. On Wednesday, Gao Gao went back into the main viewing exhibit, and he also went through the motions of re-scenting his territory.

Anastasia Horning is a panda narrator at the San Diego Zoo. Read her previous post, Talkin’ Takins.

21

Snow Big Deal!

It’s been rather cold lately in San Diego. Even those of us who have lived in the cold before weren’t ready for this snap…and then, it got even colder. In fact, it snowed!

But just at the panda exhibit in the San Diego Zoo’s Panda Trek.

What better way to get ready for our 3rd annual Jungle Bells event than with a little snow for our pandas? A flurry of the white stuff was blown in Thursday morning, and a winter wonderland was set up for Bai Yun and her two-year-old son, Yun Zi. This is the first time that the young panda had ever seen snow. He came out of his bedroom, tested the snow with his paw to see if he could walk on it, and then made his way from one corner of the exhibit to the other, not quite sure what to make of the new landscape! At one point he was digging in the snow and rubbed his face in the snow – not quite a snow angel, but something like that.

Our Horticulture Department staff constructed a 5-foot holiday tree from two types of bamboo (oldhamii and vivax) that was shaped to resemble a pine tree for Yun Zi to enjoy. They used a large block of ice for the tree stand, but it was no match for Yun Zi. He approached the tree, swiftly knocked it over, and nibbled the slices of fruit and vegetables that were hung as ornaments. I don’t think he appreciated the effort made, but we viewers did—the tree looked beautiful AND tasty!

Yun Zi then climbed up the icy tree stumps in his exhibit and napped above it all. Bai Yun stuck to her usual habits and sat in the middle of her exhibit munching on her morning bamboo, seeming oblivious to the snow around her. Ah well! It wasn’t until later in the day, when I went and checked out our new high-definition Panda Cam, that I noticed that he was running around, tumbling and really playing in the snow. Joy!

Enjoy the video of Yun Zi below:

Jenny Mehlow is a public relations representative for San Diego Zoo Global. Read her previous post, Name the Baby Koala.