By Gregory McNamee
It is a curious irony of history that we are learning ever more about elephants just at a time when elephants are an imminent danger of having a home only inside zoos—which, if the passenger pigeon and the thylacine are any gauge, are extinction’s waiting room.
Scientists have discovered many things about these remarkable creatures in just the last few years, expanding and reinforcing our understanding of the order we call the Probiscidea. One of them is something that has been observed but not much formally studied; namely, the elephant’s habit of wandering freely and widely.
Zoo visitors have probably seen elephants who sway back and forth, as if in time to some music that we cannot hear, making a slow pendulum of their trunks. They are swaying because they are meant to move, and over far more ground than even the largest zoo can provide.
A study recently published in the journal Biological Conservation reports that, while all elephants are disposed to travel, the population in the Gouma region of Mali seems to take the prize for exploring the greatest territory. Scientists from the University of British Columbia fitted nine elephants from different herds with GPS devices that revealed that the elephants had a home range of 32,000 square kilometers (about 12,350 square miles), which is about 150% larger than the largest previous reported range, that of an elephant population in Namibia, another desert country. The very fact of those large ranges suggests that the elephants have a broad mental geography—but also that resources are exceedingly scarce, since the reason they travel in the first place is to find food and water.
With such large territories, it is no surprise that elephants should have developed a communication system made up of vocal calls, for which a trumpeting trunk makes a fine amplifier. Yet, while that system has been noted before and studied in some detail among African elephants, the calls that their Asian cousins use have not. A scholar at the University of Pennsylvania, Shermin de Silva, published a dissertation in 2010 that reports on the “socioecology” of elephant calls on the island of Sri Lanka. There she identifies a total of 14 distinct call types, affording elephants vocalizations that cover a large number of applications, such as warning of danger or establishing territories.
De Silva has further studied social networks among female elephants that are reinforced by communication. One of her findings is that, in her words, “individuals associate with a pool of long-term companions,” which may explain why elephants long separated (as with two circus elephants who had been apart for 22 years [in the video below\) should so immediately resume their old bonds. This intent awareness of social structure and of other elephants is, one might think, a natural outgrowth of that communicative ability, for, as other researchers have noted, elephants can recognize the voices of fully 100 individual elephants—and at a distance of a mile away, no less.
Geographic knowledge, communication systems, social networks, sociability itself: all these things require mental ability. The elephant’s memory is a matter of proverb, but it is more than that: elephants even remember their dead kin, honoring their skeletal remains, covering them with earth, leaves, and branches. This bespeaks a large capacity for information, and indeed the elephant has the largest brain of any land animal, three times bigger than Albert Einstein’s, with three times more neurons.
If we gaze into the eyes of an elephant, then, we peer into a great soul and an ample mind, one whose mysteries and capabilities we are only beginning to understand. This underscores the tragedy of elephants in our time, for fully three-quarters of the world’s elephant population as it stood just a couple of decades ago has disappeared, even as demand for ivory is at an all-time high. The United States—and specifically New York City—is a leading center of this ivory trade, which makes it all the more welcome news that finally, various governments within the country are setting regulations in place to put an end to the marketplace for slaughter. Those regulations are complex, with broad implications for owners and collectors of musical instruments, objets d’art, and the like; as The New York Times reports, for instance, antiques dealers have objected that putting an end to the ivory trade means that they may be sitting on unsalable merchandise forevermore.
But just as we do not pity those who can no longer profit in, say, goods taken from graves at Native American sites or art looted during the Shoah, neither should we give such objections overly much concern—not when 30,000 elephants are being killed each year for no reason other than human vanity, and human greed. Video.