Shunya's Notes

The Discreet Charm of the Chimpanzee

Here are three interesting articles on the social life of chimpanzees, on how they learn, fight, and console.

Prestige Affects Cultural Learning in Chimpanzees

Humans follow the example of prestigious, high-status individuals much more readily than that of others, such as when we copy the behavior of village elders, community leaders, or celebrities. This tendency has been declared uniquely human, yet remains untested in other species. Experimental studies of animal learning have typically focused on the learning mechanism rather than on social issues, such as who learns from whom. The latter, however, is essential to understanding how habits spread. Here we report that when given opportunities to watch alternative solutions to a foraging problem performed by two different models of their own species, chimpanzees preferentially copy the method shown by the older, higher-ranking individual with a prior track-record of success. Since both solutions were equally difficult, shown an equal number of times by each model and resulted in equal rewards, we interpret this outcome as evidence that the preferred model in each of the two groups tested enjoyed a significant degree of prestige in terms of whose example other chimpanzees chose to follow. Such prestige-based cultural transmission is a phenomenon shared with our own species. If similar biases operate in wild animal populations, the adoption of culturally transmitted innovations may be significantly shaped by the characteristics of performers.

More here (via culture and cognition). Follow an interesting exchange on this here and here.

  Why chimpanzees attack and kill each other

Chimpanzees (along with bonobos) are humans' closest living relatives. Anthropologists have long known that they kill their neighbors, and they suspected that they did so to seize their land. "Although some previous observations appear to support that hypothesis, until now, we have lacked clear-cut evidence," Mitani said.

The bouts occurred when the primates were on routine, stealth "boundary patrols" into neighboring territory. Amsler, who conducted field work on this project described one of the attacks she witnessed far to the northwest of the Ngogo territory. She and a colleague were following 27 adult and adolescent males and one adult female.

"They had been on patrol outside of their territory for more than two hours when they surprised a small group of females from the community to the northwest," Amsler said. "Almost immediately upon making contact, the adult males in the patrol party began attacking the unknown females, two of whom were carrying dependent infants." 

More here (via 3QD).

Simian Solicitude: Like Humans, Chimpanzees Console Victims of Aggression

Chimpanzees may comfort others in distress in ways very similar to how people do, according to what may be the largest study of consolation in animals by far. The new findings in our closest living relatives could help shed light on the roots of empathy in humans.

The spontaneous consolation of someone in distress with a hug, a pat on the back or other friendly display of physical contact has been studied in human children as a sign of sympathetic concern for others for decades. This kind of demonstrative empathy is often thought to be a large part of what sets humanity apart from other animals.

More here (via 3QD).

Frans de Waal on Primatology

Here is a wonderful essay by primatologist Frans de Waal that illustrates how cultural presuppositions are inseparable from our investigations of nature, that ontology (in this case our a priori view of 'animal nature') underlies the questions we ask, the answers we get, and what we make of them. Even categories like “reason” and “logic” are inseparable from culture (or metaphysics, more specifically), a point so often missed, including by so many self-avowed rationalists.

In 1952, when European ethologists still worked on instinct theories and American behaviorists still trained rats to press levers, Imanishi [the founder of Japanese primatology] wrote a little book that criticized the view of animals as mindless automatons. He inserted an imaginary debate between a wasp, a monkey, an evolutionist and a layman, in which the possibility was raised that animals other than ourselves might have culture. The proposed definition of culture was simple: if individuals learn from one another, their behavior may, over time, become different from that in other groups, thus creating a characteristic culture. Soon thereafter, his students demonstrated that the potato washing started by a juvenile female monkey on Koshima Island spread to other members of her troop. The troop had developed a potato washing culture.  [Photo, taken by the author, shows Japanese macaques on Koshima Island are still washing potatoes half a century later.]

Imanishi was also the first to insist that observers give their animals names and follow them for years so that they understand their kinship relations. His concepts are now all around us: every self-respecting field worker conducts long-term studies based on individual identification, and the idea of cultural transmission in animals is one of the hottest topics of today. But that is now: at the time, all Imanishi got was ridicule.

More here.  Speaking of primates, check out a short post I did on our trip to Sumatra last year to see orangutans in the wild.

Amazon Rainforest, Ecuador

For its size, Ecuador may be the most geographically diverse country in the world. Besides the volcanic islands of Galapagos, it has three distinct regions: a coastal belt, the Andes mountains, and the sparsely inhabited El Oriente, or the Upper Amazon Basin to the east. El Oriente is mostly primeval rainforest, merging into cloud forest in the eastern foothills of the Andes. It teems with rivers that feed the mighty Amazon, the lifeblood of the "world's richest and most varied biological reservoir, containing several million species of insects, plants, birds, and other forms of life, many still unrecorded by science. The luxuriant vegetation and wide variety of trees include many species of myrtle, laurel, palm, and acacia, as well as rosewood, Brazil nut, and rubber tree." As in parts of Brazil, the Amazon rainforest in Ecuador is also shrinking, led by the usual economic motives (timber, petroleum, etc.) and new human settlements.

About six years ago, Usha and I went to El Oriente. We took a bus from Quito to the tiny town and jungle outpost of Tena, where we hired a taxi and went further east to a point along Rio Napo called Puerto Barantilla, where we took a boat to our jungle lodge near the mouth of Rio Arajuno. Over the next three days, we explored the region with local guides, including a memorable all-day hike through primordial forest, buzzing with streams and massive diversity of life (it rained hard that afternoon, making our hike path quite treacherous). We also went river rafting one day after assembling a raft out of logs with our guide's help, and hiked to amaZOOnico, an animal rescue and rehabilitation center run by local and overseas volunteers. Here we saw some of the great variety of Amazonian wildlife, including macaws, toucans, trumpet birds, tortoise, many kinds of monkeys, jaguars, ocelots, peccaries, tapirs, capybaras, agoutis, etc. The lodge served all of our meals. Dinner staple was fish with vegetables, rice, yucca or plantain, and tropical fruit, served by candlelight (the lodge had no electricity). The mosquitoes were large and vicious. The forest comes alive at night with the sound of a gazillion crickets.

The 10 min video below is based on the footage I took there (turn on HQ mode after it starts playing; a QuickTime version is here).

Flesh of Your Flesh

Should you eat meat? Here is a really good essay by Elizabeth Kolbert that also reviews Jonathan Safran Foer's Eating Animals.

Americans love animals. Forty-six million families in the United States own at least one dog, and thirty-eight million keep cats. Thirteen million maintain freshwater aquariums in which swim a total of more than a hundred and seventy million fish. Collectively, these creatures cost Americans some forty billion dollars annually ... “We have so many customers who say they’d eat macaroni and cheese before they’d cut back on their dogs,” a Colorado pet-store owner recently told the Denver Post. In a survey released this past August, more than half of all dog, cat, and bird owners reported having bought presents for their animals during the previous twelve months, often for no special occasion, just out of love. (Fish enthusiasts may bring home fewer gifts, but they spend more on each one, with the average fish gift coming to thirty-seven dollars.) A majority of owners report that one of the reasons they enjoy keeping pets is that they consider them part of the family.

Americans also love to eat animals. This year, they will cook roughly twenty-seven billion pounds of beef, sliced from some thirty-five million cows. Additionally, they will consume roughly twenty-three billion pounds of pork, or the bodies of more than a hundred and fifteen million pigs, and thirty-eight billion pounds of poultry, some nine billion birds. Most of these creatures have been raised under conditions that are, as Americans know—or, at least, by this point have no excuse not to know—barbaric. Broiler chickens, also known, depending on size, as fryers or roasters, typically spend their lives in windowless sheds, packed in with upward of thirty thousand other birds and generations of accumulated waste. The ammonia fumes thrown off by their rotting excrement lead to breast blisters, leg sores, and respiratory disease. Bred to produce the maximum amount of meat in the minimum amount of time, fryers often become so top-heavy that they can’t support their own weight. At slaughtering time, they are shackled by their feet, hung from a conveyor belt, and dipped into an electrified bath known as “the stunner.”...

How is it that Americans, so solicitous of the animals they keep as pets, are so indifferent toward the ones they cook for dinner?

More here.  (via 3QD. Also check out my previous posts on this topic here, here, and here.)

Friday Cats

Five from the Shunya archive.

Food, Inc.

If you see only one documentary this summer, make it Food, Inc. Here is Roger Ebert's review, and the first 3-1/2 minutes of it.

The next time you tuck into a nice T-bone, reflect that it probably came from a cow that spent much of its life standing in manure reaching above its ankles. That's true even if you're eating the beef at a pricey steakhouse. Most of the beef in America comes from four suppliers.

The next time you admire a plump chicken breast, consider how it got that way. The egg-to-death life of a chicken is now six weeks. They're grown in cages too small for them to move, in perpetual darkness to make them sleep more and quarrel less. They're fattened so fast they can't stand up or walk. Their entire lives, they are trapped in the dark, worrying.

All of this is overseen by a handful of giant corporations that control the growth, processing and sale of food in this country. Take Monsanto, for example. It has a patent on a custom gene for soybeans. Its customers are forbidden to save their own soybean seed for use the following year. They have to buy new seed from Monsanto. If you grow soybeans outside their jurisdiction but some of the altered genes sneak into your crop from your neighbor's fields, Monsanto will investigate you for patent infringement. They know who the outsiders are and send out inspectors to snoop in their fields.

Food labels depict an idyllic pastoral image of American farming. The sun rises and sets behind reassuring red barns and white frame farmhouses, and contented cows graze under the watch of the Marlboro Cowboy. This is a fantasy.

The Orangutans of Sumatra

In May 2009, Usha and I visited the Gunung Leuser National Park in north Sumatra to see orangutans in the wild. We hired a guide in the gateway village of Bukit Lawang and hiked several miles into a dense primary growth forest. Heavy rain on the previous night made the hike rather treacherous and we had to grab on to branches and roots to go up and down the hilly terrain. But the forest was beautiful, abundant with tropical flora and fauna (some of it unique to the island), rushing streams and animal sounds, and we did get lucky: we saw about ten orangutans on our daylong hike. One middle-aged female—rescued years ago by the orangutan center in Bukit Lawang and reintroduced into the wild—even came down and held Usha's hand! Other primates we saw include gibbons and Thomas's Leaf-monkeys.

The orangutan (“person of the forest”), whose habitat has shrunk to parts of Sumatra and Borneo, has cognitive abilities that rival those of the gorilla and the chimpanzee, the only primates more closely related to humans. Placid, deliberate, and mostly vegetarian, orangutans are known for their ingenuity and persistence, particularly in manipulating mechanical objects, and for their "cognitive abilities such as causal and logical reasoning, self-recognition in mirrors, deception, symbolic communication, foresight, and tool production and use. In the wild, orangutans use tools, but at only one location in Sumatra do they consistently make and use them for foraging, [defoliating] sticks ... to extract insects or honey from tree holes and to pry seeds from hard-shelled fruit." We saw one juvenile male using a stick as a tool.

Here is a slideshow of my best orangutan shots set to music (2 min, 25 sec). Check out some more pictures and a primer on orangutans.

Asian Food for Thought

Growing up in India, I ate meat only a handful of times until I left home for college. My mother, a moderately pious Hindu, had a deep aversion to eating animals and wouldn’t allow meat in her kitchen (I also remember her kindness and sympathy towards the ragged animals that shared our city streets: cows, dogs, horses, goats, cats, donkeys, and even occasional elephants and camels). My father was vegetarian for the most part, except when, on rare occasions, he pretended to enjoy a few morsels of meat. I think he did this despite himself, mostly to project the public image of an adventurous, cosmopolitan man. If no one were looking, I’m sure he would have picked a vegetarian option ten times out of ten.

The only times I ate meat was when my older sister brought home a chicken or mutton (goat meat) dish from a friend’s place, or cooked it herself on a Sunday morning on a kerosene stove in our courtyard. When she cooked, my task was to procure the meat. I would bike up to the butcher’s shop and await my turn, squeamishly eyeing the goat carcasses hanging on hooks, and gallantly ask the man for ‘the best cuts,’ to which he always replied, ‘only the best for you, son.’ Washing and cleaning the meat, I felt a strange exhilaration—I saw it not as food but as the flesh and bone of a dead animal, hacked to bits just hours ago. Mother allowed my sister to use only the most beaten down utensils from her kitchen and later instructed the maid to scrub them clean thrice as long.

Still, my parents encouraged us, holding meat to be salutary for growing kids. Their attitude later struck me as similar to Gandhi’s own during his early struggle and experimentation with eating animals. Gandhi saw meat as a contributor to the enviable vigor, material progress, and sturdier physiques of people from the West, while battling his own and his society's traditional dispositions against it.

I was introduced to eating fish and prawns in college. Thereafter, living outside India, I began eating other animals too—cow, pig, turkey, crab, squid, etc. I had non-vegetarian food several times a week and it became a key part of my cooking repertoire—I acquired a bevy of fans for my spicy lamb curry and barbequed chicken. On my travels, I even sampled lobster, shark, snail, venison, guinea pig, and wild boar. But in the ensuing years my meat intake began to decline. I came to relish it less and less. About eight years ago, I gave up eating mammals, and now almost always choose vegetarian. Long live tofu, beans, lentils, and the huge range of Indian vegetarian cuisine.

Tarra and Bella

Tarra, the elephant, and Bella, the dog, live together at The Elephant Sanctuary in Tennessee, where retired elephants from zoos and circuses across America may be fortunate enough to spend the last decades of their life in a natural habitat among friends. The Elephant Sanctuary is funded entirely by private donations. Read about the sanctuary and their elephants' stories and behaviors here.

The Lives of Animals

"Life on the farm isn't what it used to be. The green pastures and idyllic barnyard scenes portrayed in children's books have been replaced by windowless sheds, tiny crates, wire cages, and other confinement systems integral to what is now known as 'factory farming.'" Here is a sobering look at how farm animals are transformed into food today (viewer discretion advised. Also see my previous post on this topic.)

(Click image to go to video site. The source of the image above here.)