Chimpanzee Sanctuary Northwest

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wadge

Change of Plans

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This afternoon I was photographing Jamie as she chewed and wadged some cattails.

While I was hoping to write a blog post about wadging, she soon decided that she’d rather groom the camera with her cattails.

There’s no way to ever be a fly on the wall when photographing chimps.

Thankfully, Jamie was in a very laid back mood today so she let me continue taking close-up pictures while she groomed the camera, my phone, and my boots.

Eventually, a bit of drama between some field mice outside the Greenhouse got Jamie’s attention, and she chose to finish wadging her cattails where she could watch it unfold.

The Waning Days of Summer

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We’ve reached the time of year where the days are still warm but the mornings are cold enough to remind you that summer’s days are numbered. When I arrived at the chimp house this morning I had trouble finding Negra. After calling her name a few times, she poked her head out of this mountain of blankets in the Greenhouse just long enough to greet me with a few soft grunts.

Before long, a breeze had cleared out the wildfire smoke that had settled overnight and things began to warm up. Jody and the gang took to the hill to enjoy some sunshine.

The chimps had a surprise treat at lunchtime. Volunteer Patti brought watermelon and Field Roast veggie dogs so that the chimps and their caregivers could have an End of Summer party.

Foxie was still on the hill with Jody when lunch was brought out. When she came back and saw what was on the tray, she couldn’t believe her eyes. Without context, the behaviors and body language  of fear and excitement can be difficult to distinguish in chimpanzees. Foxie grimaced, baring all of her teeth, and sought reassurance from the other chimps and her caregivers. When chimpanzees are overwhelmed with emotion, good or bad, they seek comfort in their friends.

It was also Patti’s birthday (Happy Birthday, Patti!). We wholeheartedly endorse this idea of bring food to us on your birthday, Patti, and hope that it is the beginning of a new trend wherein anyone who has a birthday brings us lunch.

Even party lunches have to end with bags of primate chow, lest we upset The Queen. By lunch, Negra had shed all of her blankets except for the bare minimum needed to maintain a sense of comfort and security.

Chimps nibble on certain foods, while other foods are almost always stuffed into their mouths as though they are trying to set a Guinness record. Primate chow makes excellent wadge material and the chimps often chew it into a thick paste and spit it back into their hand periodically to admire their handiwork. Missy has additional reasons for stuffing her face with chow – it’s much harder for Negra to steal pieces out of her mouth than it would be if they were still in the bag…

Normally the humans around here lament the end of summer but this year feels different. It’s been hot and dry and smokey for too long. We’re looking forward to some gray, rainy days and the opportunity to throw on an extra blanket or two.

 

Wadging

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Whenever I try to describe wadging, I end up making it sound too clinical: Chimpanzees wadge in order to extract nutrients from fibrous foods. This is true in the sense that humans eat food in order to extract nutrients, but but it doesn’t get at the enjoyment that we feel when we eat.

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I’m pretty sure that chimps get that same feeling when they wadge. One of the most mysterious aspects of it (to me anyway, maybe there’s a good explanation) is that they seem compelled to keep checking on the wadge. They hold it out on the tip of their lips for a visual inspection. They take it out and hold in their hand. They work on rolling it into the perfect ball. I don’t know what makes a wadge good or bad from a chimp’s perspective, but it seems like they are constantly evaluating them.

Young’s Hill is too dry for growing cattails, but we collect them from a nearby pond and give them to the chimps. Cattails are great for wadging, as Burrito demonstrates here:

Chow wadge

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In the wild, chimpanzees create a wadge when eating certain types of food. A wadge is simply a ball of food that is placed in the lower lip and sucked on. Wadging can be a way to extract juice and nutrients from foods that are too fibrous to swallow, or it can be a way to extract the flesh from fruits that have bitter or poisonous seeds. Chimps sometimes create a wadge when eating small bits of egg or meat by adding leaves and chewing everything together. Some think that this might just be a way to prolong the enjoyment of a scarce but highly valued food.

Whatever the ultimate reason may be, it’s clear that some foods are just meant to be wadged, and primate chow is high on that list. As Annie demonstrates here, you start but dumping the entire bag into your mouth and arranging them into your lower lip.

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Then, add water.

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Make sure you take out the wadge once and a while to check on its progress.

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Then, sit back and enjoy!

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Snowballs

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You may notice in this video that the chimps often hold the snow out on their extended lower lip to inspect it. This behavior is common with wadges, the clumps of fibrous foods such as seeds and leaves that chimpanzees chew and suck the juice out of (see below). For some reason, chimps love to inspect their wadges as they chew them. Perhaps snow falls into the same category to them, or maybe it’s just too cold to keep in their mouths.

Annie with a wadge of cattails