Chimpanzee Sanctuary Northwest
Hope. Love. Home. Sanctuary
We love when the chimps find comfort or enjoyment in human toys—so long as they’re safe, of course. While all new toys are checked by two staff members to ensure they will withstand the chimps’ strength and destructiveness, everyone once and a while they chimps are able to, um, modify their toys in ways we didn’t anticipate. Let’s just be thankful that the building isn’t held together with doll head screws.
A recent study added to vast knowledge we know about chimpanzees. One area in chimpanzee studies that keeps surprising us is their use of tools. A recent study added to what we know about chimpanzee tool use. The study conducted by Dr. Alejandra Pascual-Garrido and team at Gombe Stream National Park in Tanzania; the same area Jane Goodall first observed chimpanzees using tools to complete a task.
The task at hand? Fishing for termites. What Dr. Pascual-Garrido and fellow researchers determined that chimpanzees don’t just use any ol’ stick lying around. Their tool is carefully selected based on what the chimpanzee wants to accomplish. For instance, with termite fishing, chimpanzees were found to use certain sticks/stems based on their qualities and features. Since termite mounds are a series of long, winding tunnels, the chimpanzees will use tools that are more flexible to better weave through the tunnels to find the colony.
If you are an avid blog follower, then you know we have a handful of chimp residents here who use tools for various things. Whether its a stick Jamie picked out that is sturdy enough to groom caregivers’ boots, or Honey B ripping the bamboo out of the ground in her greenhouses and cutting it down to size, we have some pretty amazingly intelligent chimpanzees. A few years back we found some chimps who found new use for these long, plastic straws they are given as enrichment.
One new use that had the entire blog following rolling in laughter was Annie’s use of the straw to siphon Jamie’s smoothie right out of her hands. Well, seems like someone found this use and decided to try to get Negra’s morning juice supplements as she was drinking it… TWICE! On two separate occasions!
Be sure to watch the video to find out who!
Today’s blog is all about enrichment! We are so grateful to the many supporters who helped make it possible for us to purchase new enrichment and craft new food puzzles thanks their generous support during our Comfort and Joy online auction. Some of the donated supplies are still waiting to be turned in to their final form, so stay tuned for a future blog to share more. Today’s video and blog will highlight the newly made giant holey lids courtesy of Tricia M. and new troughs thanks to Kathleen C.!
I love watching the chimps meet a new challenge, and find their own ways to accomplish the task at hand. Some puzzles require a demo by the humans, but most of the time we let the chimps try on their own first. As you’ll see in the video, Honey B has come up with a very different approach to the new troughs. Honey B’s method comes as no surprise, and she accesses the treats in record time!
Below is Lucky showing off her mostly clean trough! We put sugar free strawberry pudding in the bottom, and tossed some pomegranate arils on top which stuck to the pudding, requiring that she use the bamboo stick in her hand (or a different tool) to get the pudding and pomegranate. These troughs are the perfect depth, as the chimps cannot simply use their fingers to reach the bottom, which encourages the use of a tool and engages them with the puzzle for more time. Lucky was the first to master her method, which Willy B and Terry also utilized. Sometimes we put seeds, cereal, or other non-sticky food items in the troughs, which they can access by tipping the trough towards themselves (or using the Honey B method!).
Below is a newly made giant holey lid, ready for it’s first use by the chimpanzees! I cut several holes into the large (brand new) trash can lid, and bolted a frisbee to the middle of the lid. The frisbee can easily be rotated to cover the different holes, thus allowing one chimpanzee to control access to the other holes in the lid. Peanut butter has been smeared on the back of the lid, around each of the holes. I created this with the intention of using it as a social enrichment device with Cy’s group as they continue to undergo their reintroduction. If you’d like to learn more about social enrichment, see here! The below photo is what the puzzle looks like from the chimps’ point of view.
This photo show the back of the puzzle with smeared peanut butter, and is what the humans see after hanging up the puzzle for the chimpanzees.
Willy B was the first to try out the new puzzle today. He quickly figured out how to access the peanut butter, and moved the frisbee slightly. When a conflict started in the group which required Willy B’s attention, Rayne was quick to seize her opportunity and worked on the puzzle for quite a while. I’m looking forward to seeing more of the chimps get to experience this new food puzzle, and hope to see them move the frisbee more intentionally in the future! Thank you again to Tricia M. and Kathleen C. for your generous gifts to the chimpanzees!
What did we do to incur such a biblical plague of snakes this year? It seems we are constantly recalling the chimps, though, mercifully, nearly all intruders have been of the garter or racer variety. But rattlesnakes abound in this canyon, and to keep them out of the habitats we have to ensure that not even a 1/2″ hole has formed in or underneath the fence that surrounds these five acres. Over the years, including this year, rattlesnake incursions have occurred, and we fortify those rodent tunnels where we suspect they enter with concrete and hardware cloth. Thankfully, Burrito appears to be far more cautious around snakes these days and the rest of the gang seems to know to keep some distance, though that doesn’t stop them from throwing dirt or rustling the bushes with sticks. They are also better at recall, which allows us to remove the snake before anyone pushes their luck.
Please remind me of all this when I am complaining about snow in a few months.
First up, here is your Honey B update! Despite our best attempts to keep her attention away from her healing eyelid and occupy her time with other activities, she did open up her incision slightly yesterday. Dr. Erin assessed her and for now, we are waiting to see how it continues to heal and consulting with other experts to be sure we have the best plan in place for her. We continue to provide her with extra enrichment, and today one of her enrichment devices doubled as enrichment for the humans who created it.
We have had a large cardboard tube in the Chimp House for the past several weeks without a use for it. Today it found its purpose! We drilled some holes in the tube, added chain through the tube, and clipped it to the caging of Honey B’s room. We added some of her favorite things to the inside of the tube (popcorn, shelled peanuts, raisins) and raspberries to some of the holes to peak her interest. We gave her a bamboo stick as a tool and sat back to see what she did with it.
The idea was that the small snacks would fall through the drilled holes when the tube rolled around the chain, and Honey B would use her bamboo stick to pull the snacks to her. Well…that’s not exactly what happened. To no one’s surprise, Honey B outsmarted our plan! She was able to tap and tip the tube in such a way that the majority of the snacks fell out of either end, so it did not take as long as I had thought it would to finish the puzzle. I would like to create a reusable version of this for everyone with PVC one day, and Honey B has helped me to identify some flaws in my plan! Thank you for the design assistance, BeeBee!
It was a very good day around the sanctuary today. It is warmer here today (not warm…but warmer!). Negra enjoyed a nap in her nest in the greenhouse which was quite cozy with the heater going. Her group enjoyed eating some of the remaining snow, which is now a perfect snow cone texture. Burrito loved looking at himself on my phone and was especially fascinated by his own tongue.
I feel so fortunate to be able to share in these moments with the chimps, and to get to share them with you all. I hope your Saturday has been just as good as ours!
It is another cold day here at the sanctuary! The chimps spent their day with extra projects provided by caregivers to keep them occupied since outdoor activities were off the table for the day given the very cold temperatures. For the most part, this included things like adding seeds to their daily forage for them to search for inside, and providing flavored snow made with fresh snow and sugar free juice. But, as you will see in the video for today, Honey B quickly created her own project, and showed off her tool use skills and determination in the process. Her group enjoyed watching her work, and reaped the rewards when trading parts of her contraband back to caregivers for extra snacks!
Jamie’s group had a more laid-back kind of snow day with lots of relaxing in fabulous blanket nests, eating their flavored snow, and playing together with both caregivers and each other. Enjoy some photos from the day below!
Jamie and Burrito enjoying flavored snow
Burrito, Missy, and Jamie eating flavored snow
Burrito, Jamie, and Missy eating flavored snow
And some bonus photos from today…
A VERY handsome Cy Chimpanzee!!
See how Cy and Dora spent a rainy Friday morning.
Speaking of Cy…this morning there was a large blanket under a door that I needed to close at breakfast time. Hydraulic doors can be closed securely with blankets in the way but then the blankets tend to get wet when we clean the floors. So we usually ask the chimps to help move the blankets out of the way, with mixed results. My first request was to Gordo, which I should have known would get me nowhere. Nothing but a blank stare from that guy. Then I asked Terry and Dora, but they were preoccupied at that moment, if you know what I mean. I could have gone to Lucky or Rayne next but at that point I knew who I had to call. Even though he was at the far end of the room, with a word Cy calmly walked the length of the front rooms and pulled the blankets out of the doorway for me. What a guy.
