Bears

Bears

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Polar Bears: Summer Update

Handsome Kalluk is back in a non-breeding state of mind, but there are still many things that capture his attention!

Handsome Kalluk is back in a non-breeding state of mind, but remains a curious, active fellow.

In response to recent blog comments regarding Kalluk, the Polar Team wants to assure everyone that he is doing very well. He is rebounding nicely out of breeding season but does occasionally fall back briefly into some breeding season habits. Kalluk has gained a significant amount of weight and some days he eats about 40 pounds of meat! He is once again acknowledging keepers—always a nice change from the height of breeding season when he can be very non-responsive to behavior cues and “hellos” because his focus is elsewhere. He was even was trying to initiate play with me the other day as well as greeting me with his hot, bear breath when I said “good morning”. He also really enjoys a good lip rub again—he pushes his lips past the mesh so keepers are able to make safe contact.

For those who have noticed Kalluk walking around by the waterfall and rockwork in the back of the exhibit, rest assured he is not revisiting his breeding season antics. Behind the rockwork and those doors are the bedrooms where all the bears get the majority of their diet. At various time during the day, keepers call the bears inside to eat their favorite items in private bedrooms. Also in these bedrooms are some comfortable materials they use to make themselves a bed each night. One speculation for Kalluk’s motivation is that he either wants to come inside for food (Yea Kalluk!) or he would like to make a bed by hauling rubber mats, burlap, and boxes to his favorite spot—all of which are behaviors that we are very happy to see. We try to provide opportunities for the bears to create beds on exhibit as well, but we strive to give the bears choices and where they make their bed at night is one important choice. Early in the afternoon, the bears outside get to choose between being on exhibit or going in the bedrooms.

Tatqiq and Chinook are also doing well. You may notice Chinook is looking beautifully plump these days. We purposefully increased her diet significantly this year at this time, to see if it would tip the scales (pun intended) in favor of her chances of having cubs. We really are trying everything we can to make this breeding season a success. Other ways in which we are trying to increase Chinook’s chances (as we have in past years) are allowing her to “choose” her situation (i.e. isolation or with the group), access to air conditioned bedrooms, eventually installing her den, and continuing to study her hormone levels via fecal samples.

As usual, Tatqiq is her “happy-go-lucky” self. She too has gained a little weight, as we intentionally increased her diet. Stay tuned for some exciting projects in the future with Tatqiq!

Other updates include a recent change to the exhibit. We added a new bridge in front of the waterfall. This simple renovation to the exhibit will enable us to make future changes easier to facilitate such as using a bobcat to add more substrate to the exhibit. New substrate is a great source of enrichment and gives the bears more opportunities to make a bed on exhibit.

As the heat increases in the summer months, we do ask for your patience! On those hot days, the bears are allowed access to those nice, cool bedrooms by 3 p.m. PST at the latest in order to give them more choice. Each bear can decide to stay on exhibit (therefore potentially on view for Polar Cam fans) or choose to make a bed inside their bedrooms. Thank you for understanding!

Susan Purtell is a keeper at the San Diego Zoo.

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Ambassador Mi Ton Teiow Receives a New Posting

Mi Ton Teiow explores the archaeology and classical culture of ancient Greece, which included stories and myths about bears and people.

Mi Ton Teiow explores the archaeology and classical culture of ancient Greece, which included stories and myths about bears and people.

Bear Conservation Ambassador Mi Ton Teiow was posted to San Diego Zoo Global for one year following the 22nd conference of the International Association for Bear Research and Management (IBA) in Provo, Utah, but he has now moved on to new adventures!

En route to the 23rd conference of the IBA in Thessaloniki, Greece, Mi visited some of the world-famous archaeological sites in Athens, and admired a statue of a little bear dedicated to the Greek goddess Artemis. This was a beautiful reminder that bears have played an important role in European culture since the rise of European civilization, and they still do. This point was reiterated at the conference during a special session on human-bear conflict. In addition, a session on conservation of Mongolian Gobi bears was attended by representatives of the Mongolian government, further illustrating the importance that some people around the world continue to place on bears and bear conservation.

Mi also heard updated assessments of the conservation status of the eight bear species by the IUCN’s Bear Specialist Group. Six of the eight species of bears are now considered at some risk of extinction, which is a sobering reality in a changing world. As part of the discussion of the status of Asiatic black bears and sun bears, Mi heard about ongoing efforts to reduce the impact of the harvest of these bears’ bile, which is used in some traditional medicinal practices. Mi’s previous travels have not dealt much with the issue of bear bile harvest, but Mi is now gaining much more exposure to this topic.

During the conference, a select committee of international bear biologists decided that Mi could now best serve bear conservation by traveling with Matt Hunt, Chief Executive of Free the Bears Fund, a non-profit, non-governmental organization focused on the conservation of bears in Asia. Since leaving Greece, Matt and Mi have already visited India, Cambodia, Australia, and Laos. So, although Ambassador Mi Ton Teiow has already explored bear conservation in many countries, there are many opportunities for further discovery. Good luck, Mi!

Russ Van Horn is a scientist with the San Diego Zoo Institute for Conservation Research. Read his previous post, What to Eat When There’s Nothing to Eat.

4

Who You Calling “Sloth?”

Curious Sahaasa sniffs out his new surroudings.

Curious sloth bear Sahaasa sniffs out his new surroundings.

This week, I had the opportunity to observe two new additions to the San Diego Zoo’s bear canyon. Sahaasa and Kayla, 2-year-old sibling sloth bears, got busy making themselves at home—and watching each go about it in their own way was quite interesting!

Sloth bears are not well known to many North Americans, but they are really very interesting creatures. Their long, shaggy coat makes them appear quite cute and cuddly, but they are good-sized bears with sharp claws and teeth and can therefore be quite dangerous if provoked. They live in the grasslands and open dry forests of India, where they feed primarily on insects; those extra long claws are particularly useful at shredding rotting wood and hard-packed dirt to gain access to the grubs, termites, and other delicious invertebrates that live beneath. So, too, is their muzzle well adapted to foraging for bugs, with highly mobile lips, nostrils that can close to keep dirt out, and a gap in their front teeth to allow them to vacuum up creepy crawlies. These guys are well suited to play nature’s exterminator.

The sloth bear is so-called because originally it was thought they resembled sloths, the slow-moving tree dwellers. In fact, sloths bears are not related to sloths, but the differences don’t end there.

In three hours yesterday, I watched Sahaasa climb a tree a half dozen times, crawl into the moat just as often, scratch a hole in a 6-inch-thick (15 centimeters) piece of deadwood, dig a hole (that his big body could nearly fit into) in about 10 minutes, dangle from the climbing structure more times than I could count, and sniff out every inch of his new exhibit space. The dictionary defines “sloth” as “habitual disinclination to exertion, laziness.” Apparently Sahaasa didn’t get the memo.

Kayla is a little more shy and reticent than her brother, but she performed her share of mayhem as well: she uprooted a shrub with little effort and dragged it half way across her exhibit. If you’d like to come say “hi” to the newest additions to our bear family, you might want to do it soon. I can’t guarantee any of their exhibit plants or hardware will survive for much longer!

Suzanne Hall is a senior research technician for the San Diego Zoo Institute for Conservation Research. Read her previous post, World Orangutan Day.

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Lazy Gao Day

Panda Cam caught Bai Yun enjoying some treats on her "plate."

Panda Cam caught Bai Yun enjoying some treats on her “plate.”

We don’t get to see much of our senior panda, Gao Gao, on Panda Cam. But rest assured he is looking good, eating well, and, in the words of San Diego Zoo keeper Karen Scott, he seems “happy.” Gao is even at his ideal weight: 170 pounds (77.2 kilograms).

So why can’t guests view Gao Gao these days? Well, as Karen explained, Gao Gao and his son, Xiao Liwu, are “like peas in a pod,” personality-wise. “Mr. Wu” doesn’t like the construction noise as we build our new Asian leopard habitat, and neither does his dad! They are much more comfortable farther away from the intermittent noise. Xiao Liwu is currently in the off-exhibit north yard, where he can sometimes be seen on Panda Cam, and Gao Gao has access to another off-exhibit yard. Bai Yun, our matriarch, remains in her normal exhibit, where guests can admire her munching contentedly on bamboo. Nothing fazes this panda mama!

Although Gao Gao can go in his outside yard whenever he wants to, he sometimes prefers to have what Karen calls a “lazy Gao day.” He has a large rubber tub that he uses as a comfy bed. Keepers fill the tub with a flake of excelsior hay, and Gao likes to stretch out in it, resting on his back, his legs straight out and his forelimbs dangling over the edge. The other day, Karen put FOUR flakes of hay in the tub and fluffed up some of it to make a pillow for Gao. Panda heaven! With his pile of bamboo nearby, Karen says all he really needed was a TV to watch a football game or two.

Debbie Andreen is an associate editor for San Diego Zoo Global. Read her previous post, How to Take a Panda’s Blood Pressure: 8 Easy Steps.

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Polar Bear Tatqiq Wears It Well

Tatqiq wears a collar

Tatqiq wears a collar for conservation science.

If you visit the San Diego Zoo’s Polar Bear Plunge these days, you might see something new: Tatqiq is wearing a white collar! While Tatqiq seems to be enjoying both wearing this new accessory and the training involved in putting it on and taking it off every day, our motives for having her wear it are focused on conservation science. Tatqiq will be contributing to research led by the U.S. Geological Survey focused on developing a better understanding of the behavior of wild polar bears in Alaska. These data will help us refine our understanding of how sea ice losses driven by climate change will impact polar bears.

The current configuration of the collar is simple: a thick and flexible plastic strap held together with a pair of zip ties, so Tatqiq can remove the collar easily if she wants to. If the collar is pulled, it will immediately loosen and fall off. However, this collar will soon be instrumented with a small accelerometer (the same technology that allows your smart phone to automatically adjust its screen orientation) that will provide scientists with information regarding the behavior of the bear wearing the collar. Because the polar bear’s Arctic sea ice has historically made it near impossible to make direct observations of polar bear behavior in the wild, the data we gain from the accelerometer will provide new insights into their daily behavior, movements, and energetic needs.

Held together with zip ties, the collar can easily come off if needed.

Held together with zip ties, the collar can easily be removed by Tatqiq if it bothers her.

“Radio-collars” have been used to track wildlife for decades and were initially developed to study the movements and infer the behavior of grizzly bears in Yellowstone National Park. These early studies provided wildlife scientists with data that revolutionized our understanding of how individual bears moved about the landscape, and in so doing, helped us develop a much better understanding of what their habitat needs might be.

Since that time, the technology used to track wildlife has changed quite a bit, but the collar itself is still most commonly used to mount tracking devices and other instrumentation. With the advent of GPS collars (instead of VHF transmitters), the precision and quantity of the data we can collect on a wide array of animals has greatly expanded. The data collected by the instrumentation on these collars can also be downloaded remotely and frequently, allowing scientists and non-scientists alike the opportunity to track animals in the most remote corners of the Earth in real time and from the comfort of their own home or office.

While movement and location data are valuable, they only tell us part of the story. By studying behavior, we gain more insight into how animals interact with their environment and why different degrees of environmental change may differentially influence their chances of successful reproduction or survival. While baseline data can tell us about the range of behaviors an animal may engage in under a range of “normal conditions,” data collected under challenging environmental conditions can tell us much about the limits of a species’ ability to cope with their new environment and help us better predict what their limits might be. This work is part of the U.S. Geological Survey’s Changing Arctic Ecosystems Initiative.

We hope the collar...

We hope Tatqiq will help us test this new technology for studying wild polar bears.

The polar bear exemplifies the challenges associated with studying and protecting wildlife in our rapidly changing world. The Arctic sea ice, the habitat that the polar bear completely depends on for survival, is disappearing at an alarming rate. These habitat losses are driving population declines across the polar bear’s range, but some subpopulations are being hit harder than others. For example, recent results published from a long-term study of wild polar bears showed that the Alaskan population of bears from the Southern Beaufort Sea had declined by about 40 percent since the year 2000. Forty percent! That is a tremendous decrease and double the level of the most dire estimates that have come out of the last three decades of monitoring.

Tatqiq has always been a great conservation ambassador for polar bears everywhere. Visitors to the San Diego Zoo who have spent time watching Tatqiq (and Chinook and Kalluk) know that she is playful and engaged and demonstrates a range of behaviors that provide insights into the intelligence of these majestic bears. Now, Tatqiq will be helping us better understand how we can apply technology to better understand the behavior of wild bears. She wears it well!

Megan Owen is an associate director in the Applied Animal Ecology Division, San Diego Zoo Institute for Conservation Research. Read her previous post, Pandas Zhen Zhen and Yun Zi.

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How to Take a Panda’s Blood Pressure: 8 Easy Steps

Liz offer Xiao Liwu a treat while his blood pressure is taken.

Liz offer Xiao Liwu a treat while his blood pressure is taken.

You may recall that in early June, keepers began training giant panda Xiao Liwu to have his blood pressure taken (see post Xiao Liwu: Star Student!). “Mr. Wu” learned to put his forelimb (arm) in the metal sleeve and lightly grab the bar at the end of that sleeve with his claws the first day of training. That was Step 1. But what were the next steps? Keeper Liz Simmons filled me in.

Step 2: Panda to keep arm in metal sleeve for increased lengths of time.

This was easy, says Liz. As long as Mr. Wu was getting rewarded for calmly staying in one spot with his arm in the metal sleeve, he was happy to sit there all day! Squirts of honey water were the big ticket items for our boy, but he was (and still is) also willing to do this step for pieces of apple, carrot, sweet potato, and biscuits (soaked, not dry).

Step 3: Get panda used to having arm touched.

Talk about a fun task! Keepers touched, poked, and rubbed Xiao Liwu’s arm while it was in the sleeve. He, of course, had been touched a lot when he was small, but now that he’s such a big bear (almost 100 pounds), keepers might give his ears or head a scratch through the metal mesh but don’t usually touch his arms. He had to get comfortable with them touching his arm. No problem!

Step 4: Wrap blood pressure cuff around panda’s arm.

We use the same type of blood pressure cuff used for humans, but in Mr. Wu’s case, a child-size one. This step involved pulling apart the Velcro strips and attaching the cuff to our two-ear-old bear’s arm so he could get used to the feel of the cuff. YIKES—Wu did NOT like the sound of the Velco ripping apart! He had never heard that sound before.

Step 5: Get panda used to sound of Velcro ripping.

Liz ripped the Velcro in Xiao Liwu’s vicinity every chance she got to get him used to this new sound. She even called him over to her while he was on exhibit and ripped that Velcro. It didn’t take long for Mr. Wu to become desensitized to the sound of Velcro. (Now, when I hear Velcro ripping, I’ll always think of our panda boy!)

Step 6: Wrap blood pressure cuff around panda’s arm (again)

With Velcro issues a thing of the past, keepers could now proceed to wrap the cuff on his arm. No problem this time!

Step 7: Get panda used to having his arm squeezed.

Once the cuff was in place, a keeper squeezed her hand around the cuff to simulate the feel of a blood pressure squeeze. No problem there!

Step 8: Hook up cuff to blood pressure machine, place cuff on panda, and take a reading.

On November 3, 2014, Xiao Liwu had his first blood pressure reading. Actually, he was so comfortable and calm during the procedure that keepers took three readings. Mr. Wu has passed!

For now, these blood pressure readings will provide a baseline for our medical team. They will be done every week or so, as time allows. Xiao Liwu is happy to cooperate. Liz says he “really like to work!”

Next up for our star student? Blood-draw training.

Debbie Andreen is an associate editor for San Diego Zoo Global. Read her previous post, Pandas On and Off.

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Pandas Zhen Zhen and Yun Zi

Do you remember when Yun Zi turned 3?

Do you remember when Yun Zi turned 3?

Many of you have been wondering how some of our San Diego Zoo-born pandas are doing since their arrival in China. We are happy to report that both Zhen Zhen and Yun Zi are doing very well!

Zhen Zhen, now 7 years old, lives in Wolong’s Bi Feng Xia panda base. She gave birth back on August 24, her first surviving cub (she gave birth to a stillborn cub in 2013). Mother and cub are both doing great. Her cub, born at 6.9 ounces (194.5 grams) now weighs a healthy 6.6 pounds (3,000 grams)! The behavior of Zhen Zhen and her cub has been normal, and the increase in body weight certainly tells us that this young panda is getting plenty to eat! Wonderful job, Zhen!

Yun Zi, now 5 years old, is also making us proud. He is currently at Wolong’s panda base in Dujiangyan, where he continues to exemplify a robust, energetic, and healthy young male panda. He has settled in just fine to his new surroundings. We still miss him, though, but are thrilled to hear that he is thriving!

Megan Owen is an associate director with the San Diego Zoo Institute for Conservation Research. Read her previous post, Panda Collaboration.

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Pandas On and Off

Xiao Liwu takes a stroll.

Xiao Liwu takes a stroll.

Changes are happening at the San Diego Zoo, and all for the better, of course! Ground was broken for our new Asian leopard habitat, to be located next to Panda Trek in our Panda Canyon (see NEWS blog dated October 9). With the preparation and construction of this wonderful new home for our snow leopards and Amur leopards comes noise. We try to keep noise to a minimum in our giant panda area.

Bai Yun seems to take almost all construction noise in stride—she’s had years of experience at the Zoo! Her son Xiao Liwu has been the least bothered by noise of all six cubs Bai Yun has raised. Still, as construction progresses, panda keepers may take “Mr. Wu” off exhibit from time to time or move him to the north yard if they find he is bothered by the noise. He could still be seen by our Panda Cam viewers but not by Zoo guests. Gao Gao will continue to remain off exhibit during this time.

Where there's 'boo, there's bliss!

Where there’s ‘boo, there’s bliss!

But the good news is that a television monitor tuned to Panda Cam has been installed in our main gift shop! If you come to the Zoo, you can check on Panda Cam to see who is visible before making your way down to Panda Trek. And our wonderful volunteer Panda Cam operators will always strive to give you the best possible view of one of our pandas.

Debbie Andreen is an associate editor for San Diego Zoo Global. Read her previous post, Well, Chinook?

4

Understanding Wildlife Trade In Asia

A sign outside a store in Luang Prabang, Laos, advertises ivory for sale.

Typing this from a café in Laos, I am thinking about and facing one of the greatest threats to biodiversity: the illegal trade in wildlife and wildlife parts. I’m looking at a sign in a shop across the road, advertising elephant ivory for sale. Recently, I walked through the local night markets, with wildlife parts such as muntjac horns, turtle shells, pangolin scales, bear teeth, leopard cat teeth, and wild pig tusks, among others, for sale. Earlier I passed a restaurant that had two macaques in tiny cages. Last week, I passed a house in an upscale neighborhood of Phnom Penh where a brave wild bear cub (its mother killed by a snare in the forest) escaped its tiny cage, scaled the wall, and landed in the pool of the boutique hotel next door. Thankfully, the cub was rescued and is now being rehabilitated in the Phnom Tamao Wildlife Rescue Centre.

Recently, I walked through the local night markets, with wildlife parts such as muntjac horn, turtle shells, pangolin scales, bear teeth, leopard cat teeth, wild pig tusks among others for sale. Earlier I passed a restaurant that had two macaques in tiny cages. Last week, I passed a house in an upscale neighborhood of Phnom Penh, where a brave wild bear cub (its mother killed by a snare in the forest) escaped its tiny cage, scaled the wall, and landed in the pool of the boutique hotel next door (see photo). Thankfully the cub was rescued and is now safe and being rehabilitated in the Phnom Tamao Wildlife Rescue Centre.

A three-week-old Asiatic black bear cub is one of a pair of cubs rescued from the wildlife trade and now being cared for at the Phnom Tamao Bear Rescue Centre in Cambodia. It is destined for a wonderful life in the forest.

Of all the species we work with at the San Diego Zoo Institute for Conservation Research, by far the most complex and dynamic are humans! Numbering over 7 billion, with countless cultures, motivations, and world views, humans are an extremely complex, yet central element in conservation initiatives. Successful conservation requires a multipronged approach, tackling the biochemical, ecological, and behavioral aspects of wildlife and the cultural and economic countenance of humans.Our Conservation Education Division focuses on the socio-ecological aspects of conservation across three main themes: conservation education, conservation social science, and community-based conservation. As a community-based conservation ecologist, I focus on the intersection of wildlife and humans, using both ecological and sociological research methods to inform our projects, which is why I am in Southeast Asia.

Three of the 20 Souphanouvong University students who, after participating in our training workshop, partnered with us to conduct wildlife surveys in Laos. They are conducting surveys at the Tat Kuang Si Reserve in Laos.

With its dense, tropical forests, rich biodiversity, and large human populations, Asia is a center of wildlife trade. Despite many countries having made capturing, poaching, killing, and exporting of wildlife illegal, poaching and consumption of wildlife still abounds. The history of wildlife use in Asia is a long and ingrained one, where for over 3,000 years wildlife has been used for food, traditional medicine, entertainment, and decoration. It’s embedded in many cultures here.

Couple that history to the rapidly developing economies and expanding middle class here, and it has meant a continued (and growing) demand for wildlife products, many of which are regarded as status symbols. Tackling such normative aspects of culture to try to curb this tide of wildlife use, and to eliminate demand, is a big challenge!

The Free the Bears team designs and refines the survey instrument for Cambodia.

Since the beginning of September, I’ve been in the field collaborating with our partners at Free the Bears. They are dedicated to conserving Southeast Asian bears, specifically the Asiatic black bear Ursus thibetanus and the sun bear Helarctos malayanus. These species are poached from the forest and killed for their gall bladders. The cubs are captured and placed in bile-harvesting farms where, confined in small cages, bile is periodically withdrawn from their gall bladder using a large needle over the next 10 years or so. Both species are also killed for their paws, which are used in bear paw soup and bear paw rice wine, and for their claws and teeth, which are used for decoration. Lastly, cubs of the killed parents are taken for the pet trade.

A recently rescued sun bear is in quarantine before being released to the forest enclosures in the Phnom Tamao Bear Rescue Centre in Cambodia

Free the Bears staff patrol for and remove snares from the forest and actively rescue bears from confinement. We are supporting this work by developing and conducting human dimension surveys about wildlife in Cambodia and Laos. Our collaborative project employs a novel approach to understand people’s knowledge, attitudes, and beliefs toward wildlife and to learn about their usage of bears for parts and pets. Understanding how people think about and view wildlife is vital for developing conservation interventions, especially when tackling wildlife consumption. It will also form the foundation of future communication and education efforts about wildlife. People’s attitudes often drive their behaviors; by better understanding attitudes, we can more effectively affect behaviors.

A sun bear does what it does best: living a free life in its native habitat.

In Cambodia, we are conducting face-to-face interviews with people about their knowledge and attitudes toward wildlife. We are using a randomized response technique (RRT) to ask about wildlife usage. Why? When you ask people about illegal activities (such as drug-use, DUI, etc.), they may not answer truthfully, so data may be biased or unreliable. RRT uses a randomizing device (such as dice or coin flip) that allows the respondent to answer truthfully while maintaining anonymity. Even the interviewer does not know their response! For Cambodia, we are basing our RRT around a local dice game called khla-kluk.

Students at Souphanouvong University in Laos are excited to help out conservation after our workshop.

In Laos, we’re using a different approach. We’re asking people to complete a self-administered questionnaire, which we have translated into several languages (see images). We partnered with the Women’s Union and Souphanouvong University students, whom we trained to conduct surveys. With this wonderful team of 30 citizen scientists, we have collected over 700 surveys. By the end, we will have over 1,000. This is a fantastic response and the first of this scale in Laos.

We are grateful to the governments of Cambodia and Laos for their bold action around making wildlife trade illegal and for allowing us to conduct these surveys. We are also grateful to our many local partners, who are doing the hard work of administering the surveys in the coming months. It is hoped that we can adapt this survey for use across Southeast Asia and India in a comprehensive assessment of wildlife usage.

David gives a lecture (via a translator) about conservation in Laos.

It is through efforts like this, and the incredible work of the Institute, San Diego Zoo Global, Free the Bears, and others that I can stay hopeful, even as I look at wildlife products for sale. Why? Because we’ve not given up, and we are working in smart, complementary, and sustainable ways to tackle these threats so that humans and wildlife can co-exist.

Thanks to you for your continued support, which makes this work possible.

David OConnor is a research coordinator for the San Diego Zoo Institute for Conservation Research. Read his previous post, World Giraffe Day.

57

Well, Chinook?

I snapped a photo of this bear from the Polar Cam. Any guesses as to who looks so relaxed?

I snapped a photo of this bear from the Polar Cam today. Any guesses as to who looks so relaxed?

Polar bears have, what seems to us, a long gestation period. A fertilized polar bear egg doesn’t implant or develop right away. Instead, it implants when triggered by the female’s body condition and environmental factors, most often between September and November. This is known as delayed implantation, an adaptation that ensures cubs are born to healthy mothers at a time of year when their chances for survival are greatest. We are in the middle of that time zone right now with our female bear, Chinook. If a fertilized egg were to implant, the actual fetal gestation would be about 60 days.

Keeper Samantha Marino explained that Chinook is starting to be come interested in using bedding materials and desires more “alone time” from Tatqiq and Kalluk on a more regular basis. Keepers are offering Chinook denning/nesting materials, such as Bermuda grass, burlap, and palm fronds, and allowing her to spend the afternoon away from the other bears. They will continue to monitor this behavior and give Chinook what she needs for a possible pregnancy.

Chinook’s urine and feces are collected and sent to our Endocrinology Lab several times a week to determine if there are any changes in her hormone levels that might indicate that hoped-for cubs are on the way. And currently, Chinook is just on exhibit in the morning; in the afternoon and evening, she gets to enjoy the privacy of the off-exhibit polar bear yard, which includes access to the bedroom area.

We will certainly let polar bear fans know if anything changes, but for now it’s just a waiting game. Paws crossed!

Watch the bears daily on Polar Cam…

Debbie Andreen is an associate editor for San Diego Zoo Global. Read her previous post, Pandas Keep Cool.