Noble Beasts
Animals online
Birds do it, polar bears do it -- and with the help of satellite transmitters, they send e-mail too.
Cut-rate Viagra offers, get-rich-quick schemes, loony diet plans. The strangest spam you’ve ever received can’t compare to what’s in Janet Linthicum’s in box almost every day. The predatory bird researcher gets e-mail from bald eagles.
Eagles migrating from Northern California to their summer digs in North Central Canada and back send word to Linthicum about where they are and how they’re doing, like sending postcards from a twice-a-year, 1,500-mile road trip.
Linthicum and other staffers at the Santa Cruz Predatory Bird Research Group have decked out the birds with special radio transmitters, which weigh less than 2 percent of the eagle’s body weight. About the size of a matchbox, the transmitters are worn like a backpack with straps that go over the eagle’s breast.
The radio transmitters emit a pulse — inaudible to bird or human — that any of the five National Oceanic and Atmospheric Administration satellites orbiting the earth can pick up. The satellites are part of the Argos System, a joint environmental data collection project between France and the United States. The information collected is downloaded to ground receiving stations and then forwarded to Linthicum’s in box for study.
“It’s remarkable how much more information you can get with the transmitter. No matter where the bird goes you can follow,” says Linthicum. In addition to learning each bird’s longitude and latitude, Linthicum gets readings from an activity sensor, which determines if the bird is still alive, as well as an air-temperature sensor, which reveals if the sensor has fallen off.
Such “satellite telemetry” lets biologists learn exactly what routes the birds take on their yearly flights — information important not just for ornithological research, but also for habitat conservation.
“People have done banding studies for years, so there was a little bit of information about bald eagle movements,” Linthicum explains. “But the satellite shows exactly where they go and when they go throughout the full year. To get that kind of information, you’d probably have to band hundreds of birds.”
So far, the Santa Cruz researchers have put some 15 bald eagles online — they’re currently tracking four. But at any given time there are hundreds of other birds and mammals being tracked and studied through the same satellite system by researchers around the globe. In a given month, the Argos program tracks approximately 7,500 individual objects, living and otherwise; about 20 percent of those are animals in similar studies, ranging from West Indian manatees in Florida to Malaysian elephants and porcupine caribou in the embattled Arctic National Wildlife Refuge. Whales have transmitters attached to their blubber that they pull behind them as they swim. Female polar bears wear collars to monitor their movements and their proximity to other bears. Sea turtles carry dive counters in Walkman-size transmitters on the backs of their shells to see how often they take a dunk. And one study of the way nesting geese reacted to a U.S. Army helicopter training exercise involved surgically implanting heart-rate transmitters in a sample group of geese to monitor via satellite if the bird’s pulses raced during the helicopter flyovers.
While humans hem and haw about the Big Brotherish implications of new tracking technologies like chip implants and global positioning satellites, it seems like the whole damn animal kingdom has already uploaded its coordinates and biological data into the matrix. Maybe we humans are just late to the party.
Started as a weather-tracking program in 1978, the Argos System provided a way to monitor surface temperature and barometric pressure in the ocean via transmitters stationed on floating buoys. But in the early ’80s biologists began using the system to press the boundaries of what can be tracked and learned remotely from animals.
Biologists have long tracked animals via radio transmitters with hand-held receivers, stalking their subjects by flying over them in helicopters or following them in vehicles. But this approach obviously has its limits for birds that migrate thousands of miles, or a polar bear whose movements over ice and snow in subzero temperatures can make following along an impossible ordeal in bad weather. Ironically, satellite tracking can make the study of animal behavior into a sit-in-front-of-your-monitor experience far from fresh air and dirt.
In early studies, only large animals like polar bears could comfortably carry the heavy transmitters necessary for tracking. But as the technology got smaller and lighter and the power requirements shrank — it can take as little as a quarter of a watt to send these messages — Debbie Shaw, deputy director of information technology for Service Argos in Maryland, says that the biological field has exploded. Some transmitters are now as small as 15 grams, making surgical implantation a possibility.
A satellite picks up the pulse of the transmitters in about a 10-minute window. The satellites circling near the equator make it around the earth six or seven times a day, while the ones near the poles (given the shorter latitude) make their trip 14 times a day. As the satellite approaches a transmitter it picks up the signal at different frequencies depending on its proximity to the object. Using the Doppler effect, the longitude and latitude of the transmitter can be calculated with accuracy as close as 150 meters. The satellite dumps the data it receives at any of three main ground stations in Wallops Island, Va.; Gilmore Creek, Alaska and Lannion, France, where it then gets sent along to the scientists.
As for the effect on the animals, don’t start cooking up dire images of nature marred by scientific hubris. Even the individual animal subjects aren’t saddled with the transmitter for their entire lifespan. In the case of the bald eagles the Santa Cruz researchers track, for example, the backpacks are attached with a wax cotton embroidery thread that’s designed to degrade and fall off roughly when the battery-powered transmitter runs out of juice.
Monitoring humans in the same way is mostly off-limits as far as Argos is concerned. A not-for-profit with an environmental mandate, the system is used to track humans only when they are in some kind of “loss of life” situation. “What I call crazy projects,” Shaw explains. Those brave (or foolish) adventurers who embark on plans to walk to the North Pole in a month or sail around the world in a boat by themselves often have Argos with them to send an alarm and help out in an emergency rescue.
Over the years, as many mysteries of nature have been solved by the data stream from the sky (Where do spectacled eider ducks go in winter anyway?), new ones have sprung up to vex researchers. Take the puzzling case of Chessie, the West Indian manatee.
It seems Chessie took a long swim one summer from Florida up the coastal waters of the Atlantic to the Chesapeake Bay. He then explored the Long Island Sound and the East River, before cruising over to New England. Since manatees weren’t known to venture farther north than Virginia, the 28-mile-a-day sea trek was cause for excitement and concern among biologists tracking the manatee via satellite.
But soon marine biologists became so worried that Chessie wouldn’t make it back to Florida in time for winter that they interfered with their own experiment, captured the marine mammal and transported him back to warmer waters. “They didn’t think he would make it,” Shaw explains. But then the following year, the manatee with wanderlust took off again on the same trip to the Chesapeake Bay. Go figure.
The eye-opener in the Santa Cruz Predatory Bird Research Group’s bald eagle study has been that individual birds take almost exactly the same route at the same time each year. “It was completely surprising,” says Linthicum. “Bird X would be on the same river in Southern Alberta at the same time.”
It makes you wonder what mysteries of human behavior will be revealed when the commercial applications of technologies similar to Argos become available, as they are beginning to be. No doubt the same exhibitionists who broadcast their lives on webcams will be lining up to have their every move tracked and broadcast on the Web to their devoted fans. And just as we can now follow the individual migration pattern of a single bald eagle named Alegria or an Alaskan caribou named Blixen on the Web, how long before a GPS-enabled descendent of Jennycam starts sending out daily e-mail updates of her longitude and latitude, heart rate and body temperature? After all, isn’t it time that Web performance art caught up with science, and we followed our feathered and four-legged friends out of the primordial ooze into the digital age?
Katharine Mieszkowski is a senior writer for Salon. More Katharine Mieszkowski.
Hollywood’s long history of animal cruelty
"Luck's" horse injury-related cancellation shows how far the film industry has come in treating non-human stars
Stills from "Luck" and "Ben-Hur" When HBO’s “Luck” was canceled after a third horse died during production, it was natural to ask what was going on. Were animals being abused? Were people being careless?
The truth was nothing was that simple or savage. Apparently the horses were being treated well, with greater care than actual working racehorses. The third horse was reportedly in good health and high spirits the day it died. It was in such spirits that it reared up as horses sometimes do. This time it fell over backward, and landed on its head. Just an accident. All you can blame is the fragile frame of the thoroughbred horse, which was created for racing.
Continue Reading CloseSusan McCarthy is a San Francisco freelance writer and the author, with Jeffrey Masson, of "When Elephants Weep: The Emotional Lives of Animals." More Susan McCarthy.
The Trump brothers’ grotesque hunting spree
The Trump sons go on safari -- and prey on the weak and helpless for fun. Sound familiar?
Donald Trump, Jr. and Eric Trump (Credit: huntinglegends.com) How arrogant and out of touch are Donald Trump’s sons? Let’s put it this way – this is a story in which their father comes off as the subtle, nuanced thinker.
It seems Donald Jr. and his brother Eric went to Africa on a hunting trip last year, and their tour company, Hunting Legends, decided recently to brag of the men’s prowess on their Web site, complete with graphic photos of the brothers and their kills. And here’s a shocker – there’s something about rich white men smiling with the carcasses of the African animals they’ve killed that a lot of people just don’t like.
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Mary Elizabeth Williams is a staff writer for Salon and the author of "Gimme Shelter: My Three Years Searching for the American Dream." Follow her on Twitter: @embeedub. More Mary Elizabeth Williams.
Swallowed by a whale — a true tale?
Everyone knows the story of Jonah. But my quest was to find evidence that man, gulped whole, had really survived
An idea’s been floating around for some time that whales more than chewed people — that they swallowed them, and people might have survived in the stomach. Jonah’s story came first, and then there were rumors from the 19th century Yankee Whale Fishery — whaling ships leaving New York and New England ports for years on the open ocean. I’d like to believe in swallowings, but it’s tough. There is no air in the stomach, for one. There are acids. And if we are talking about sperm whales, which we are most of the time, there is the deadly passage through the 30-foot jaws lined with 8-inch teeth.
Continue Reading CloseBen Shattuck has written for McSweeney’s, The Rumpus, HTMLGiant, ReadyMade, Once Magazine, 7x7, and The Morning News, among other publications. More Ben Shattuck.
When a cage means freedom
Two stories -- a real-life tragedy and a feel-good film -- offer a clear lesson for zoos. And maybe even us, too
(Credit: AP) 2011 brought two very different zoo stories. The first, a tragedy, takes place in mid-October in Zanesville, Ohio. Terry Thompson, the owner and keeper of Muskingum County Animal Farm, released 56 animals from their enclosures before killing himself. It is unclear what he thought would happen to them, but it’s safe to say that Thompson was disturbed, depressed and isolated. He had just spent a year in prison for possession of unregistered guns (and many more were found on the premises after his death), his wife had just left him, and it was reported that he was having serious financial difficulties. He was unable to maintain good relationships with most of his neighbors; some people speculate that releasing the animals was a way of getting back at the people who surrounded him. Others thought he intended the animals to find a new life in the wild. Faced with over 35 big cats and other dangerous animals running loose in their community, though, the sheriff’s office ordered all the animals to be hunted down and killed. The bodies of dead animals lined the road into town.
Continue Reading CloseKathy Rudy is associate professor of Ethics and Women's Studies at Duke University. Her most recent book is "Loving Animals: Toward A New Animal Advocacy," Minnesota University Press, 2011. More Kathy Rudy.
How did the wolf evolve into man’s best friend?
In a Salon interview, Mark Derr explains how our relationship with our pets can help explain all human history
(Credit: Russ Beinder via Shutterstock) Would the dog exist if we hadn’t helped create it? That’s one of the thorny questions Mark Derr tackles in his new book, “How the Dog Became the Dog.”
Derr acknowledges that the story of the dog’s emergence (as distinct from its evolutionary forebear, the wolf) cannot be “neatly distilled.” Different estimates place the first appearance of dog-like creatures anywhere from 12,000 to 135,000 years ago. But Derr argues that the dog itself was an “evolutionary inevitability.” He suggests that dogs and humans — similar animals who “simply took to traveling with each other” tens of thousands of years ago, “and never stopped” — have had a significant influence on each others’ development over the course of a long, co-evolutionary relationship.
Continue Reading CloseEmma Mustich is a Salon contributor. Follow her on Twitter: @emustich. More Emma Mustich.
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