San Diego Zoo Blogs

A common activity with young children is to make handprints with finger paint for proud parents to display on their refrigerators. These are often kept for years to reminisce about the growth of their children. We decided that this would be a useful exercise to do with our African elephant calves at the Wild Animal Park. While we didn’t hang these prints on the refrigerator, we did use the print measurements to compare their growth with the growth of wild African elephant calves.
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San Diego Zoo staff members Bryan Endress and Maren Peterson are currently in Vietnam to help put together a conservation plan for critically endangered Tonkin snub-nosed monkeys. They are keeping us posted on their progress. See their previous blog, Snub-nosed Monkeys: Meetings.

Our expedition to the Tonkin snub-nosed monkey habitat was yesterday. To get to the area, we hiked from 600 to 2,000 feet (180 to 600 meters) in altitude. We saw proposed reforestation areas, including family gardens, pastures, and corn and cassava fields. We stayed overnight at a ranger station with guides that patrol the forest.
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Things continue to go well in the den for sun bear Marcella and her twin cubs (see previous blog, Sun Bears: Growing Up Great). The youngsters are now nearly 2.5 months old and have grown by literal leaps and bounds. Their eyes have long since fully opened, and the cubs are able to take in the world around them. Now that they are becoming more mobile, they are able to interact with that world as well.
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San Diego Zoo staff members Bryan Endress and Maren Peterson are currently in Vietnam to help put together a conservation plan for critically endangered Tonkin snub-nosed monkeys. They are keeping us posted on their progress. See Maren's previous blog, Tonkin Snub-nosed Monkeys.

Yesterday was a series of meetings with the local conservation organization to discuss their proposed efforts. We had lunch - where we're getting better at using chopsticks - and then braved the traffic to visit the University of Hanoi's Forestry Department. They welcomed us with great kindness and excitement about potential collaborations. A number of professors gave presentations, and we toured their experimental forest. We then went to dinner and discussed conservation and research opportunities over many glasses of rice wine.
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What a way to end the year and begin a new one! Bryan Endress, division head of the San Diego Zoo's Applied Plant Ecology Division, and I traveled to Vietnam yesterday; it's a long 19+ hour flight. We will be meeting with collaborators from another conservation organization, governmental officials, university researchers, and local communities to discuss increasing our involvement in a Tonkin snub-nosed monkey (TSNM) conservation program. TSNMs were thought to be extinct; however, a few populations were discovered, and it is estimated there are around 200 to 300 left in the wild.
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Astute watchers of Panda Cam will have noticed that Su Lin has replaced Gao Gao in the right-hand viewing area at the San Diego Zoo's Giant Panda Research Station; but what is it about that place? During the recent cold rains, not two days into her tenure there, we were treated to a wild round of rain romping. Since it was a holiday week, there were lots of visitors there in spite of the rain, and her antics even brought the keepers out to watch the fun. It has been a while since Su Lin was inspired to this kind of swinging, climbing foul-weather play, and as she continues to get bigger and stronger, it becomes more elaborate and enjoyable for all of us.
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The arrival of heavy rain in San Diego County brought about many changes in animal behavior at the San Diego Zoo’s Wild Animal Park. Some species enjoyed the change in the weather and became more active, while others took advantage of the shelter provided by well-designed enclosures and large tree canopies within the exhibits.
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This time of the year is my favorite with the meerkats. Our group is getting along well and all of the kids are growing nicely (see Laura's previous blog, Meerkats: Scent-Marking). The weather is cold and sometimes wet, which means the meerkats don’t do as much digging. Most of their day is spent basking in the sun and standing on their tippy toes trying to get their bellies warm.
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Thursday, December 18, was certainly a momentous day for panda fans in San Diego and elsewhere as the new loan agreement was signed, insuring that the pandas would be in residence at the San Diego Zoo for another five years. In anticipation of this day, lots of new plantings were placed in both of the viewing areas, in addition to the previously described modifications to the "lair" in the left-hand enclosure (see Ellie's previous blog, New Digs for Pandas). And yes, Zhen Zhen is already demolishing some of the plantings, even as more have been added over the last week.
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Since hatching three weeks ago, the Zoo's harpy eagle chick has grown from a helpless little ball of fluff to, well, a significantly larger ball of fluff. (Read Beau's previous blog, Harpy Eagle Chick.) The chick doubled in size in just about a week and now (at almost three weeks) weighs nearly a pound.

Its little legs, barely wider than a toothpick at hatching, have grown wider than a Bic pen. They're not even strong enough yet to support the rapidly growing chick, but as the talons grow in and begin to curve downward, the feet are becoming weak, miniature versions of the adult harpy eagle's lethal killing tools. The adult harpy eagle's foot can have a span as large as a man's hand and is capable of exerting over 500 pounds (225 kilograms) per square inch of pressure. That's more pressure than a gray wolf's bite and about five times the grip of an average man's hand!
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