Jazz – The Lion

Jazz

1622050_752334508112772_398377852_nJazz has been with In-Sync Exotics Wildlife Rescue and Educational Center since 2009, and he is our biggest cat – almost 600 pounds! He lives with his brother, Shazam (coincidentally, their second-biggest cat), and the two of them of inseparable. They are almost always within touching distance of each other, and can often be found cuddling together, lying in the sun. They also LOVE enrichment time, and roll around with enthusiasm on whatever stinky stuff we give! You can read all about his story here: http://www.insyncexotics.org/Jazz.html Jazz has been adopted by Heather & John McCown (thanks Heather & John!). If you are interested in adopting and helping support this huge boy as well (he eats a LOT), you can check out our adoption/sponsorship program here: http://www.insyncexotics.org/Adopt-A-Cat.html

Killing Sprees of a Mother Lioness by Paola Bouley

Posted by Paola Bouley of Projecto Leões da Gorongosa – Gorongosa Lion Project in Cat Watch

Full belly. (Photograph by Paola Bouley)
Full belly. (Photograph by Paola Bouley)

It was one of those eerily beautiful winter mornings in Central Mozambique. Smoke hung thick in the air from the seasonal fires that had begun raging across the land, and Bob Poole and I hopped into his land rover and headed in to Gorongosa National Park towards a signal that had just come in. Helena (a mother lioness) was on a kill—the satellite data-pattern was pretty clear on that—and we wanted to document exactly what was going on.

Our route intersected with meandering elephant tracks as we drove out over the charred grasslands, edging closer to the signal’s origin on the high point of the Muzicadzi River.

Wildebeest eye us out as we approach the kill-site. (Photograph by Paola Bouley)
Wildebeest eye us out as we approach the kill-site. (Photograph by Paola Bouley)

There we stopped to watch and listen, and a herd of wildebeest did the same, peering out at us a few 100 meters away, but their attention shifted to some activity under the scrub close-by, until some limit of comfort was suddenly breached and they bolted off.

We moved forward slowly, scrutinizing every inch of land and anxiously realizing that Helena was already gone (no signal).  Then we lay our eyes on the five Sungue cubs, hunkered down and feasting on a young bull sable. Helena had made her kill for sure, leaving a small feast for her cubs. (Later we learned that while leaving her cubs to eat she had headed North to meet up with her beau on another drainage.)

A young cub gnaws on a young bull sable. (Photograph by Paola Bouley)
A young cub gnaws on a young bull sable. (Photograph by Paola Bouley)

Now Gorongosa is an ecosystem under recovery and recent years have seen remarkable increases of a wide range of species. So how the big cats of this land make their living in this rapidly changing system is a question we are scrutinizing. The common belief was that Warthogs were their mainstay, but otherwise very little was known. And for sure, Warthogs in their high abundances are definitely an important part of their diets. But what about the Sable, Buffalo, and Wildebeest, and all the Waterbuck, Reedbuck and Oribi? How do lions relish (or not) this more diverse spectrum of prey? To understand this more deeply, we have to investigate more of these grisly scenes.

A few days later the team encountered a second Sable kill-site, but this time three taken down at once! A mother (with only a few bites removed), young bull (slightly eaten), and calf (fully eaten). There is a certain uneasiness with which we assimilate such grim scenes: These lionesses were on a killing spree.

Vultures feed on an partly-eaten sable. (Photograph by Piotr Naskrecki)
Vultures feed on an partly-eaten sable. (Photograph by Piotr Naskrecki)

A week or so before, it was a young male Waterbuck too; killed, guarded for a few hours, but then finally just left whole for the vultures. Just a few weeks later, it was a young Eland (Africa’s largest antelope), but this one was consumed. And in between the spates of Warthog-for-dinner, a few more of the rarer Wildebeest were taken, this to the horror of the park’s herbivore experts. I’ve been told more than a few times (jokingly, of course) to discipline our lions.

Through continued investigation we will be able to really understand how the diet of Gorongosa’s largest carnivore reflects the shifting ecology in a spectacularly recovering ecosystem. But right now, one thing’s for sure—Gorongosa’s lions are not going hungry.

More info: Bob Poole is on assignment (living and working in Gorongosa for 16 months) to document the recovery of the Park, its communities and wildlife (and especially its lions.)  The PBS/National Geographic Int. series will air in 2015 – stay tuned!

Rolling back into camp in the “Bob-Mobile.” (Photograph by Vasco Galante)
Rolling back into camp in the “Bob-Mobile.” (Photograph by Vasco Galante)

Credits: Cat Watch

Special Albinos and Unusually White Animals by Mary Bates

Posted by Mary Bates in Weird & Wild

From ancient times to the present day, white animals often hold a special place in society.

Sometimes, an animal is born lacking the regular color of its species, which is usually due to a normal, but rare, genetic mutation. These animals can be true albinos, which lack all pigments and have white fur and reddish-pink eyes, or leucistic, with white- or light-colored fur but possessing some other pigments. (Related: “Pictures: Albino Animals Revealed.”)

These unusually white animals are prominent in many cultures’ mythologies; for example, many regard the birth of a white animal as a sacred or auspicious event. Take a look at our roundup of some of these unusual creatures.

1. Kermode “Spirit” Bear

The Kermode bear is a white black bear—a variant of the North American black bear—that lives in British Columbia’s Great Bear Rainforest.

A Kermode bear eats a fish in the rain forest. Photograph by Paul Nicklen, National Geographic.
A Kermode bear eats a fish in the rain forest. Photograph by Paul Nicklen, National Geographic.

According to National Geographic magazine, if two black bears that both carry a recessive gene for white fur mate, they may produce a white bear cub.

Hunting white bears has always been taboo for the First Nations people that share the bear’s land, and today the British Columbian government fines hunters $100,000 in Canadian dollars for shooting one of the bears. (See pictures of the Kermode bear.)

White fur occurs in one of every 40 to 100 black bears on British Columbia’s mainland coast, but the trait is more pronounced on some islands in the Great Bear Rainforest. Still, scientists estimate there are only 200 Kermode bears in the world.

2. White Lions 

According to African folklore, white (or blonde) lions have occurred in the Timbavati region of South Africa for hundreds of years. The animals are leucistic, their color the result of a recessive gene.

White lions feed on a gazelle in South Africa’s Sanbona Wildlife Reserve. Photograph by Luciano Candisani, Minden Pictures/Corbis
White lions feed on a gazelle in South Africa’s Sanbona Wildlife Reserve. Photograph by Luciano Candisani, Minden Pictures/Corbis

In myths, white lions are children of the Sun God sent to Earth as divine gifts. Oral traditions recall the special birth of a white lion, heralded by a star that fell to Earth, during Queen Numbi’s reign over 400 years ago.

The first documented sighting of a white lion in Timbavati was in 1938. In 1975, two white lion cubs were taken from the wild to the National Zoo in Pretoria. The roughly 300 white lions in captivity today are selectively bred to be white and are descendants of those lions. (Watch video: “Lion Farming.”)

In 2003, the Global White Lion Protection Trust began reintroducing white lions to Timbavati, and today it is the home of several white lion prides.

However, white lions in captivity can be controversial, not only because the animals are inbred, but also because the zoo oddities serve no purpose other than entertainment, according to some groups.

“They might be ‘cute,’ but [white lions] contribute nothing to increasingly urgent conservation needs of their tawny relatives in the wild,” Pieter Kat, a trustee at the lion-conservation group LionAid, said in a 2013 statement.

3. White Buffalo

White buffalo are not only rare (just one of every ten million buffalo are born white), they are considered sacred by many Native Americans. They may be albino or leucistic.

An albino buffalo named Dakota Miracle grazes in 2010 at the National Buffalo Museum in Jamestown, North Dakota.  Photograph by Karen Bleier, AFP/Getty
An albino buffalo named Dakota Miracle grazes in 2010 at the National Buffalo Museum in Jamestown, North Dakota.
Photograph by Karen Bleier, AFP/Getty

According to legend, at a time when the Lakota Sioux were starving due to lack of game, a beautiful woman dressed in white appeared to them. She gave the people a sacred pipe and taught them how to pray and follow the proper path while on Earth. Before leaving, she rolled on the ground four times, changing color each time, until she turned into a white buffalo calf. As she left, great herds of buffalo descended the plains.

The Native American Times reports that the earliest recorded sighting of a white buffalo calf was in 1833. Over the past few decades, they have become more common, with about 20 documented white buffalo calves born since the 1990s.

For many Native Americans, the birth of a sacred white buffalo calf is a sign of hope and an indication of good and prosperous times ahead.

4. White Elephant

Elephants are considered special in Thailand, and white elephants in particular are regarded as sacred and lucky because they are associated with the birth of the Buddha—and because by law, all white elephants belong to the king, according to the Thai government.

A newborn white elephant gets a bath in Naypyidaw, Thailand, in 2012. Photograph by Soe Than Win, Getty
A newborn white elephant gets a bath in Naypyidaw, Thailand, in 2012. Photograph by Soe Than Win, Getty

Legend holds that the more white elephants found during a king’s reign, the more glorious and prosperous his reign will be. Today, they are commonly thought to bring good luck.

Most white elephants are not truly white or albino, but are paler in color than other elephants.

The expression “white elephant” means a valuable but burdensome possession, which the owner does not want but has difficulty getting rid of.

The saying is thought to have originated from the ancient Thai monarchy practice of giving elephants as gifts. If the king was happy with a subject, he would give him an elephant and some land. But if he was dissatisfied with a subordinate, he would give him only a white elephant. As it was illegal for a royal elephant to work or be sold, this gift would often financially ruin the recipient.

5. Albino Squirrels

The small town of Olney, Illinois, is famous for its albino squirrels. No one is quite sure how it started, but by 1943, the population had reached its peak of about a thousand of the pale squirrels. Today the population holds steady at around 200 animals.

An albino squirrel. Photograph by Colin McConnell, Toronto Star via Getty
An albino squirrel. Photograph by Colin McConnell, Toronto Star via Getty

The town holds a squirrel count each fall to make certain that the population is healthy. Albino squirrels have the right of way on all public streets, sidewalks, and thoroughfares in Olney, and there is a $750 fine for running one over with a car. In 1997, the City Council amended its ordinance that prohibited dogs from running free to include cats, as well.

The albino squirrel has been embraced by Olney’s citizens as their town’s symbol: The police department’s badge even has a white squirrel on it.

Credits: Weird & Wild

Fecundity and Cougar Kittens

Posted by Mark Elbroch of Panthera in Cat Watch

Two of four 3-week old kittens born to F47, an adult female mountain lion in northwest Wyoming. Photograph by Mark Elbroch / Panthera.
Two of four 3-week old kittens born to F47, an adult female mountain lion in northwest Wyoming. Photograph by Mark Elbroch / Panthera.

F51, an adult female mountain lion currently followed by Panthera’s Teton Cougar Project, has given birth to three litters in three years, which as far as we know, is something of an anomaly. F51 immigrated into our study area from some unknown place and we started tracking her at the very start of 2011, just before she gave birth to her first litter (5 kittens!). In fall 2012, she separated from her kittens when they were 14 months old, and then she gave birth to three kittens, just 16 months after her first litter. Wolves killed two kittens from her 2012 litter when they were very young, and when her last remaining kitten was just nine months old, they went their separate ways. We were completely baffled as to why such a young mountain lion was on her own (typically kittens disperse at about 18 months in our study area), but the answer revealed itself a month later. Just ten months after her 2012 litter, F51 gave birth to four new kittens in 2013. Absolutely amazing, and completely unexpected.

Watch the video below of F51′s 2013 litter when we discovered them (unexpectedly, during routine filed work looking for mountain lion kills). They are two days old.

Fecundity. I’ve always liked the sound of the word, and how it feels when I say it. According to Merriam-Webster’s Collegiate Dictionary, fecundity means “fruitful in offspring.” For biologists, fecundity is a measure of how fruitful is a species. It’s also essential knowledge in understanding species ecology and creating effective conservation plans for species that need support. For wildlife researchers, quantifying fecundity is something of a holy grail, because it requires such a significant time and energy investment, a quest if you will.

What information is needed to determine fecundity for an animal, you might ask? First, we need to know how many offspring are born at a time. Is it typically one offspring, like humans, or twins like pronghorn? Second, we need to know how often a single female gives birth. Females of many species give birth every year, or several times a year, in cases such as meadow voles and cottontail rabbits. Last, we need to know how long females typically live in a population to estimate how many times she might give birth during her lifetime. Seems so simple!

Now let’s consider mountain lions. Cougars are cryptic carnivores that earn a living by remaining invisible to their prey. They live like shadows on the landscape, weaving in between us, often unseen. They wander vast areas as they hunt and survive, making it challenging to predict where they are at any given point in time. Mountain lions are difficult to see on a normal day, but especially tricky to see when giving birth. And mountain lions live eight to 12 years, and sometimes longer (except in hunted populations). So how do we go about finding cougar dens, documenting the length of time between cougar litters, and determining the average length of time a female cougar survives in the wild?

F51, an adult female mountain lion wearing a satellite GPS collar, and 2 of her 4 kittens born in 2013. (Photograph by Mark Elbroch / Panthera)
F51, an adult female mountain lion wearing a satellite GPS collar, and 2 of her 4 kittens born in 2013. (Photograph by Mark Elbroch / Panthera)

It would be a near impossible task, if not for technology that allows us to follow mountain lions in the field—I’m talking about the collars researchers place on animals. Modern GPS collars allow us to not only pinpoint the location of an animal, but to do so in near-real time, because GPS locations are transferred through satellites to computers in our dingy field offices.

But let’s jump to what we’re learning on the Teton Cougar Project, one of few long-running projects on mountain lions. Unfortunately, many research projects are short—typically the length of a MS or PhD program—and thus determining fecundity for a species like mountain lions is impossible. Projects like the Teton Cougar Project are so special because they are so rare.

Over 13 years, we’ve visited the natal dens of 18 different females to document litter size, and recorded inter-birth durations for nine females for which we documented two to three consecutive litters. Here, in the Southern Yellowstone Ecosystem in northwest Wyoming, female mountain lions give birth to an average of three kittens (range two to five) on average every 27 months (range 10 to 39 months). It’s amazing how so much work and so many miles hiked can be summarized in just a sentence or two.

F51 is certainly our most “fruitful” female to date. Follow F51 and other mountain lions on facebook.

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Elk, It’s What’s for Dinner… In Winter

Posted by Mark Elbroch of Panthera in Cat Watch

F61, an adult female mountain lion, standing over the carcass of an adult cow elk she successfully killed at the tale end of last winter. (Photograph by Mark Elbroch/Panthera)
F61, an adult female mountain lion, standing over the carcass of an adult cow elk she successfully killed at the tale end of last winter. (Photograph by Mark Elbroch/Panthera)

It’s akin to a light switch; it’s that stark. One day mountain lions inhabiting the Southern Yellowstone Ecosystem are predominantly killing mule deer, and the next day they all switch to killing elk. And then they kill elk for five to five and a half months before they switch back to deer.

It happens on a slightly different date each year. In 2013, it was November 14th, two weeks earlier than in 2012. There hasn’t been a deer killed by the cats we are tracking as part of Panthera’s Teton Cougar Project since that date, and we don’t expect we’ll find a deer killed by a project cougar until May. Nowhere in their vast geographic distribution do cougars exhibit such distinct summer and winter diets as in our study area.

Ungulate (a fancy word for a “hoofed mammal”) migrations, driven by the seasonal availability of forage that sustains them, result in large-scale redistributions of resources for carnivores. In response, carnivores adapt their foraging behaviors in systems with migrating prey.

In summer, carnivores in North America are quick to seize opportunities presented by the birth pulse of numerous, vulnerable, young ungulates. Whereas in winter, carnivores take advantage of the numerous ungulates struggling to survive harsh weather on lesser-quality forage and suffering poorer health. In the Southern Yellowstone Ecosystem, cougars do something more. Not only do local mountain lions follow trends in changing prey vulnerability, but they also track changing prey numbers.

M80, a young male cougar, practicing his choke hold on a mule deer fawn carcass. (Photograph by Mark Elbroch/Panthera)
M80, a young male cougar, practicing his choke hold on a mule deer fawn carcass. (Photograph by Mark Elbroch/Panthera)

Through November and December each year, thousands of elk descend upon the National Elk Refuge and surrounding Bridger-Teton National Forest and Grand Teton National Park lands in northwest Wyoming (as well as thousands of tourists to ride in sleighs drawn by sturdy horses to view them, but cougars generally steer clear of the tourists). Recent winter elk counts in the area number around 11,500 animals. This boon in prey numbers for local mountain lions coincides with the migration of mule deer out of our study area into the flat lands surrounding Jackson, WY and further south. Thus, it is not surprising that cougars here switch their focus from deer to elk with the Christmas season.

Cougar populations across North and South America are primarily non-migratory and hunt non-migratory prey. Nevertheless, where mule deer exhibit seasonal migrations, some cougars follow, exhibiting seasonal ranges themselves; other cougars remain in winter deer range through the summer, where deer persist, but at lesser numbers (Pierce et al. 1999, Cooley et al. 2008). In contrast, cougars here remain relatively stationary as ungulates migrate across the Southern Yellowstone Ecosystem, and kill different prey in different habitats in different seasons.

As they hunt through the year, mountain lions in the Southern Yellowstone Ecosystem also distribute a wealth in carcasses for scavengers, decomposers and floral communities, in more diverse locations than they would if ungulates didn’t come and go. Thus ungulate migrations in the Southern Yellowstone Ecosystem are not just vital to the dynamic health of the area, but a cornerstone piece needed to understand why local cougars do what they do throughout the year.

For those who are interested, click here to read our research paper on this subject. And please follow our work on Facebook.

3Pierce BM, Bleich VC, Wehausen JD, Bowyer RT (1999) Migratory patterns of mountain lions: implications for social regulation and conservation. J Mamm 80: 986-992.

Cooley HS, Robinson HS, Wielgus RB, Lambert CS (2008) Cougar prey selection in a white-tailed deer and mule deer community. J Wildl Manage 72: 99-106.

Serengeti Lions

serengeti-lion-615The Short Happy Life of a Serengeti Lion

Death is always near, and teamwork is essential on the Serengeti

—even for a magnificent, dark-maned male

known as C-Boy.

By David Quammen
Photograph by Michael Nichols

They say that cats have nine lives, but they don’t say that about the Serengeti lion. Life is hard and precarious on this unforgiving landscape, and dead is dead. For the greatest of African predators as well as for their prey, life spans tend to be short, more often terminating abruptly than in graceful decline. An adult male lion, if he’s lucky and durable, might attain the advanced age of 12 in the wild. Adult females can live longer, even to 19. Life expectancy at birth is much lower, for any lion, if you consider the high mortality among cubs, half of which die before age two. But surviving to adulthood is no guarantee of a peaceful demise. For a certain young male, black-maned and robust, known to researchers as C-Boy, the end seemed to have arrived on the morning of August 17, 2009.

A Swedish woman named Ingela Jansson, working as a field assistant on a long-term lion study, was there to see it. She knew C-Boy from previous encounters; in fact, she had named him. (By her recollection, she had “boringly” labeled a trio of new lions alphabetically as A-Boy, B-Boy, and C-Boy.) Now he was four or five years old, just entering his prime. She sat in a Land Rover, 30 feet away, while three other males ganged up on C-Boy and tried to kill him. His struggle to survive against those daunting odds, dramatic in itself, reflected a larger truth about the Serengeti lion: Continual risk of death, even more than the ability to cause it, is what shapes the social behavior of this ferocious but ever jeopardized animal.

On the day in question, near the dry bed of the Seronera River, Jansson came to check on a pride known as Jua Kali. She was also alert for adult males, including those “resident” with the pride. (Male lions, not strictly belonging to any pride, instead form coalitions with other males and exert controlling interest over one or more prides, fathering the cubs and becoming resident, loosely associated with the pride. They also play an important role in helping kill prey—especially with larger and more dangerous animals, such as cape buffalo or hippos—thereby contributing something besides sperm and protection to the life of the pride.) The resident males of Jua Kali, Jansson knew, were C-Boy and his sole coalition partner, a golden-maned lothario named Hildur. Approaching the river, she saw in the distance one male being chased by another. The fleeing lion was Hildur. Fleeing from what, and why, she didn’t at first understand.

Then she found a group of four males in the grass. They had settled themselves in a squarish pattern, each about five strides away from the others. She recognized them—some of them, anyway—as members of another coalition, a group of four ambitious young adult males, notorious in her record cards as the Killers.

One lion had a bloody tooth, the lower right canine, suggesting a very recent fight. Another was hunkered flat, as though wishing he could disappear into the ground. From the flattened male came a steady, nervous growl. Driving closer, Jansson saw the dark tinge of his mane and realized this was C-Boy, wounded, isolated, and surrounded by three of the Killers.

She had also noticed a lactating female, the radio-collared lioness of the Jua Kali pride. Lactation meant young cubs, hidden somewhere in a den, the presumptive father of which was C-Boy or Hildur. So this standoff between C-Boy and the Killers was more than a pointless rumble. It was a challenge for controlling rights to a pride. If the new males took over, they would kill the young of their rivals to bring the females quickly back into heat.

Seconds later, the fight erupted again. The three Killers circled C-Boy and took turns lunging at him from behind, lashing into his haunches, biting at his spine, as he spun and snarled and rolled desperately to escape. Close enough almost to feel the spray of spit, to smell the malice, Jansson gaped from her car window, taking photos. Dust flew, C-Boy whirled and roared, and the Killers played their advantage, avoiding his jaws, backing off, coming at him again from the rear, sinking their teeth, scoring hurts, until the hide of his hindquarters looked like a perforated old pelt. Jansson thought she was witnessing the terminal event of a lion’s life. If the immediate injuries didn’t kill him, she reckoned, the later bacterial infections would.

Then it was over, as abruptly as it had begun. Maybe a minute of fighting. They separated. The Killers strolled off and positioned themselves atop a termite mound, with a commanding view of the river, while C-Boy slunk away. He was alive, for the moment, but defeated.

Jansson didn’t see him for two months. He might have been dead, she guessed, or at least debilitated. In the meantime the Killers began having their way with the Jua Kali females. The small cubs of C-Boy’s or Hildur’s paternity disappeared—killed by the conquering males, or maybe abandoned to starvation, or neglected just enough to get eaten by hyenas. The females would go back into estrus now, and the Killers would father new litters. C-Boy was yesterday’s favorite, yesterday’s stud. The Jua Kalis would forget him. This is the cold arithmetic of lion society.

Tigers are solitary. Cougars are solitary. No leopard wants to associate with a bunch of other leopards. The lion is the only feline that’s truly social, living in prides and coalitions, the size and dynamics of which are determined by an intricate balance of evolutionary costs and benefits.

Why has social behavior, lacking in other cats, become so important in this one? Is it a necessary adaptation for hunting large prey such as wildebeest? Does it facilitate the defense of young cubs? Has it arisen from the imperatives of competing for territory? As details of leonine sociality have emerged, mostly over the past 40 years, many of the key revelations have come from a continuous study of lions within a single ecosystem: the Serengeti.

Serengeti National Park encompasses 5,700 square miles of grassy plains and woodlands near the northern border of Tanzania. The park had its origin as a smaller game reserve under the British colonial government in the 1920s and was established formally in 1951. The greater ecosystem, within which vast herds of wildebeest, zebra, and gazelle migrate seasonally, following the rains to fresh grass, includes several game reserves (designated for hunting) along the park’s western edge, other lands under mixed management regimes (including the Ngorongoro Conservation Area) along the east, and a transboundary extension (the Masai Mara National Reserve) in Kenya. In addition to the migratory herds, there are populations of hartebeests, topi, reedbuck, waterbuck, eland, impalas, buffalo, warthogs, and other herbivores living less peripatetic lives. Nowhere else in Africa supports quite such a concentrated abundance of hoofed meat, amid such open landscape, and therefore the Serengeti is a glorious place for lions and an ideal site for lion researchers.

George Schaller arrived in 1966, by invitation of the director of Tanzania National Parks, to study the effects of lion predation on prey populations—and to learn as much as he could, in the process, about the dynamics of the entire ecosystem. Schaller, a legendarily tough and astute field biologist, had earlier done pioneering research on mountain gorillas. If you’re making the first detailed study of any species, he told me recently, “you grab what you can.” He grabbed a cornucopia of data during three and a quarter years of intensive fieldwork, and his subsequent book, The Serengeti Lion, became the foundational text.

Other researchers followed. A young Englishman named Brian Bertram succeeded Schaller and stayed four years, long enough to begin teasing out the social factors that affect reproductive success and to explain an important phenomenon: male infanticide. Bertram documented four cases (with many others suspected) in which a new coalition of males killed cubs of a pride it had just taken over. Jeannette Hanby and David Bygott came next and assembled evidence that forming coalitions—especially coalitions of three or more—helps male lions gain and hold control of prides and thereby produce more surviving offspring. Hanby and Bygott studied some of the same prides in the same areas as Bertram and Schaller had.

Then, in 1978, Craig Packer and Anne Pusey took over the study, after having done fieldwork at the Gombe Stream Research Center (also in Tanzania) with Jane Goodall. Pusey stayed with the lion project a dozen years, co-authoring some important papers, and Packer is still on the case, leading the Serengeti Lion Project, of which Ingela Jansson’s work is part. He is arguably now the world’s leading authority on the behavior and ecology of the African lion. With Packer’s 35 years of work added to what Schaller and the others did, the Serengeti Lion Project represents one of the longest continuous field studies of a species. Such continuity is especially valuable, allowing scientists to set events in broad context and distinguish the transitory from the essential. “If you have a long-term data set,” Schaller told me, “you find out what actually happens.”

One thing that happens is death. Although it’s ineluctable for every creature, the particulars of timing and cause add up to patterns that matter.

After his harrowing experience with the Killers, C-Boy surrendered his claim on the Jua Kali pride and shifted his attentions east. Hildur, his coalition partner, who’d been so little help in the pinch, went with him. By the time I got a glimpse of C-Boy three years later, he and Hildur had established control over two other prides, Simba East and Vumbi, whose territories lay amid the open plains and kopjes (rocky outcrops) south of the Ngare Nanyuki River. This is not the most hospitable part of the Serengeti for lions and their prey—during the dry season it can be lean and difficult—but it offered C-Boy and Hildur an opportunity to start fresh.

I was traveling through that area with Daniel Rosengren, another adventuresome Swede, who had taken over the lion-monitoring role from Jansson. Way out here, east of the main tourism area and south of the river, the great vistas of grassland rise and fall smoothly, like oceanic swells, punctuated every few miles by a cluster of kopjes. The kopjes, granitic lumps festooned with trees and shrubs, standing above the plains like garnished gumdrops, offer shade and security and lookout points for resting lions. You can drive for days in this corner of the park and not see a tourist vehicle. Along with Michael (Nick) Nichols and his photo team, who were spending months at a field camp up by the riverbed, we had the area to ourselves.

That afternoon the radio signal in Rosengren’s headphones led us to Zebra Kopjes, where, amid the cover, we found the collared female of the Vumbis. Beside her was a magnificent male with a thick mane that cascaded off his neck and shoulders like a velvet cape, shading from umber to black. It was C-Boy.

From just 40 feet away, even through binoculars, I could detect no sign of injuries to his flanks or his rear. The punctures had healed. “On lions,” Rosengren told me, “most scars disappear after a while, unless they’re around the nose or mouth.” C-Boy had made a new life for himself in a new place, with new lionesses, and seemed to be thriving. He and Hildur had fathered several more litters of cubs. And just the night before—so we heard from Nichols, who had seen it—the Vumbi females brought down an eland, a very large hunk of prey, after which C-Boy had laid his imperious male forepaw on the carcass, claiming first bites. C-Boy had fed on the eland alone, taking choice morsels but not too much, before allowing the lionesses and their cubs to get at it. Hildur had been elsewhere, presumably consorting with another estrous female. So they were living the good life, those two, with all the prerogatives of resident male lions. This was just 12 hours before we saw evidence suggesting that trouble had followed them east.

The trouble was male competition. Early next morning Rosengren drove us north from Nichols’s camp to the river, seeking a pride known as Kibumbu, whose small cubs had been fathered by still another coalition. Those males had gone absent in recent months—departed to places unknown, for reasons unknown—and Rosengren wondered who might have supplanted them. That was his assignment, within the broader context of Packer’s lion studies: to chronicle the comings and goings, the births and the deaths, the affiliations and retreats that affect pride size and territorial tenure. If the Kibumbus had new daddies, who might they be? Rosengren had a suspicion—and it was confirmed when, amid the high grass of the riverbank, we came upon the Killers.

They were handsome devils, a quartet of eight-year-old males, resting in a companionable cluster. They looked forbidding and smug. They’re probably two sets of brothers, Rosengren told me, born within months of each other in 2004. They had been dubbed “the Killers” back in 2008 by another field assistant, based on his inference that they’d killed three collared females, one by one, rather systematically, in a drainage just west of the Seronera River. Such male-on-female violence wasn’t utterly aberrant—it might even be adaptive for males in some cases, opening space for prides that they control by removing competition in the form of neighboring females—but in this case it won the males a malign reputation.

Although Rosengren told me their individual names as recorded on the cards (Malin, Viking, et cetera), his preference was to call them by their numbers: 99, 98, 94, 93. Those numerals did seem somehow more concordant with their air of opaque, stolid menace. Male 99, seen in profile, had the convex nose line of a Roman senator, as well as a darkish mane, though not so dark as C-Boy’s. Inspecting him through binoculars, I noticed a couple of small wounds on the left side of 99’s face.

Rosengren eased the Land Rover closer, and two of the others, 93 and 94, stirred, turning toward us. In the golden light of sunrise we saw facial injuries on them too: a slice to the nose, a bit of swelling, a gash below the right ear still glistening with pus. Those are fresh, Rosengren said. Something happened last night. And not just a spat over shared food; coalition partners don’t do such damage to one another. It must have been a brawl with other lions. That raised two questions. Whom had the Killers fought? And what did the other guy look like this morning?

Then, as the day progressed and we made other rounds, it seemed that C-Boy was missing.

“Mostly lions die because they kill each other,” Craig Packer told me, in response to a question about fatalities. “The number one cause of death for lions, in an undisturbed environment, is other lions.”

He broke that into categories. At least 25 percent of cub loss is owed to infanticide by incoming males. Females too, given the chance, will sometimes kill cubs from neighboring prides. They will even kill another adult female, he said, if she unwisely wanders into their ambit. Resources are limited, prides are territorial, and “it’s a tough ’hood out there.”

Males operate just as jealously. “Male coalitions are gangs, and if they find a strange male that’s hitting on their ladies, they’ll kill him.” And males will kill adult females if it suits their purposes, as the Killers had shown. You see a lot of bite wounds on lions, reflecting the competitive struggle for food, territory, reproductive success, sheer survival. With luck, the wounds heal. Less luck, and the loser is killed in a fierce leonine battle, or he limps away, losing blood, maybe crippled, maybe destined to die slowly of infection or starvation. “So the lion is the number one enemy of lions,” Packer said. “It’s why, ultimately, lions live in groups.” Holding territory is crucial, and the best territorial locations—places he calls hot spots, such as stream confluences, where prey tend to become concentrated—serve as incentive for social cooperation. “The only way you can monopolize one of those very valuable and very scarce hot spots,” he says, thinking like a lion, is as “a gang of like-sexed companions who work as a unit.”

That theme has emerged strongly from Packer’s research, done with various collaborators and students over the decades. It’s not just the need for joint effort in making and defending kills, he has found, that drives lionesses to live in prides. It’s also the need to protect offspring and retain those premium territories. His data show that, although pride size varies widely, from just one adult female to as many as 18, prides in the middle range succeed best at protecting their cubs and maintaining their territorial tenure. Prides that are too small tend to lose cubs. Periods of estrus for the adult females often are synchronized—especially if an episode of male infanticide has killed off all their young and reset their clocks—so that cubs of different mothers are born at about the same time. This allows the formation of crèches, lion nursing groups in which females suckle and protect not just their own cubs but others too. Such cooperative mothering, efficient in itself, is further encouraged by the fact that the females of a pride are related—as mothers and daughters and sisters and aunts, sharing a genetic interest in one another’s reproductive success. But prides that are too large do poorly also, because of excessive within-pride competition. A pride of two to six adult females seems to be optimal on the plains.

Male coalition size is governed by similar logic. Coalitions are formed, typically, among young males who have outgrown the natal pride and gone off together to cope with adulthood. One pair of brothers may team with another pair, their half-siblings or cousins, or even with unrelated individuals that turn up, solitary, nomadic, and needing partnership. Put too many such males together as a roving posse, each hungry for food and for chances to mate, and you have craziness. But a lone male, or a coalition that’s too small—just a pair, say—will suffer disadvantages also.

That was C-Boy’s dilemma. With no partner other than Hildur, a handsome enough male who showed great eagerness to mate but little to fight, C-Boy confronted the Killers, in their aggressive ascendancy, virtually alone. Not even his resplendent black mane could neutralize three-against-one odds. Maybe by now he was already dead. If so, Rosengren and I realized, those minor battle injuries on the faces of the Killers might be the last evidence of C-Boy that anyone would ever see.

That night the Killers made another move into new territory. They had rested all day by the riverbank, letting the sun cook their faces and dry their sores. About two hours after sunset, they started roaring. Their joined voices broadcast a message of some sort—maybe, Here we come!—into the distance. Then they set out, all four together, on what looked like a purposeful march. Rosengren and I got the word by walkie-talkie from Nichols, who had been keeping vigil. We jumped into Rosengren’s Land Rover and headed out through the blackness, beginning what I recall as the Night of the Long Follow.

Converging with Nichols’s vehicle, we climbed in and stayed with the lions—five of us now, Nichols’s wife, Reba Peck, at the wheel, easing along, headlights dimmed. There was no moon. Nichols had night vision goggles and an infrared camera. His assistant and videographer, Nathan Williamson, sat ready to capture sound or deploy the infrared floods. We were a journalistic gunship, bristling with armaments, rolling slowly along behind the lions. They showed no concern whatsoever about our presence. They had other things in mind.

We followed them up an old buffalo track, then through a tight grove of fever trees, Peck coaxing the car patiently around aardvark holes, over crunching thorn branches, across a sumpy stream bottom. Please don’t get stuck, we all thought. With four Killers nearby, nobody wanted to climb out and push. We didn’t get stuck. The lions walked in single file, steady, unhurried, neither waiting for us nor trying to lose us. We kept them in view with the low headlights and, where those didn’t reach, a monocular thermal scope. Through the scope, as I sat atop the Rover’s jouncing roof, I saw four lion bodies glowing like candles in a cave.

Suddenly another large figure swung up alongside us, its eyes shining orange when I swept it with my headlamp. It was a lioness, making herself known to the Killers. Rosengren couldn’t recognize her, in this fleeting glimpse, but presumably she was in heat. So she was taking sex-mad risk, probably larger than she could guess, given the record of these particular males. When they noticed her, and wheeled toward her, she ran off coyly, pursued by all four, and for a moment we thought we had lost them. But only one male stayed on her tail; we wouldn’t see him again all night. The other three reassembled themselves, after this flirty distraction, and continued their march.

They crossed a dirt two-track (the main east-west “road,” which we used coming and going to camp) and angled south, now brazenly entering the territory of the Vumbi pride and its resident defenders, C-Boy and Hildur. They paused here and there to scent mark, rubbing their foreheads against bushes, scratching and spraying the ground. This wasn’t a sneak attack; they were advertising themselves, making a statement. Too bad, Rosengren noted, that we don’t have some sort of fancy scope to illuminate those smells.

By now they had turned and were headed toward Nichols’s camp, so Williamson radioed ahead and warned the kitchen crew to stay in their tents. But the three lions didn’t care about our little canvas compound, with its odors of popcorn and chicken and coffee, any more than they cared about us; about a quarter mile short, they bedded down to rest. During this hiatus, just before midnight, Nichols and his team went back to camp. Rosengren and I, having retrieved the other vehicle, stayed with the Killers. He took the first sleeping shift, snoring gently in the back of the Land Rover, while I sat up, keeping watch. Half an hour later the lions stood and began moving again; I woke Rosengren, and we followed.

And that’s how it went—a stretch of walking, a stretch of sleeping, Rosengren and I trading duties—for the rest of the night. Occasionally, during a stop, they let their voices rise in another chorus of roars. The roar of three lions heard at close range, let me tell you, is an imposing sound: high in decibels but throaty and rough, as though scraped up from a deep iron bin of primordial power and confidence and threat. No one answered these calls. In the wee hours the trio met a lone Thomson’s gazelle; that poor gazelle must have been terrified, but as the lions made a perfunctory try, it bounded safely away. One tommy, divided three ways, was scarcely worth the trouble. As dawn came, they were back on the road after their big loop through Vumbi territory, strolling casually west toward a familiar kopje where they would find shade or the day. It was Saturday morning. Rosengren and I left them there.

The wounds on their faces, and the absence of C-Boy, were still unexplained. Lion politics along the Ngare Nanyuki River seemed to be in flux.

Late Saturday afternoon, we found the Vumbi pride at Zebra Kopjes, a couple of miles south of where the Killers had made that intrusive circuit. Maybe the pride had been driven down there by the minatory roaring, or maybe they had just wandered. We counted three females, resting contentedly amid the shaded lobes of granite, and all eight cubs. Another female, we knew, was off on a mating foray with lover boy Hildur. No sign of C-Boy. His absence seemed slightly ominous.

Sunday afternoon, back to Zebra Kopjes. Hildur and his female had rejoined the group, but not C-Boy. Let’s try Gol Kopjes, Rosengren suggested. With luck we’ll see the Simba East pride, and he might be with them. Yes, I said; that’s my priority, I want to find him, dead or alive. So we drove southwest, rising and descending gently across the swales of grassland, while Rosengren listened in his headphones for the bleeps of Simba East. At a small kopje near the main Gols we located them: three females and three large cubs, lounging amid the radiant rocks. But again, no sign of C-Boy.

Rosengren, at this point, admitted to some worry. His job was not to root for favorites, of course, but to monitor events, including the natural phenomena of lion-on-lion violence and pride takeover; but he had his sympathies. It’s beginning to seem, he said sadly, that C-Boy must have fallen victim to the Killers.

With a lavender Serengeti sunset painting the horizon behind us, we drove back to Zebra Kopjes. Nichols and Peck were still there, with the Vumbis, who had hunkered together in the grass and begun roaring—one voice, then another, then three together, rumbling out across the plains beneath a now darkening sky and a small waxing crescent of moon. Lion roars can carry a range of meanings, and this chorus bore a mysterious, lonely tone. When they fell silent, we listened with them. No response.

Nichols and Peck departed for camp. Rosengren circled our vehicle into a spot just beside the reclining Vumbis. He wanted me to experience the fearsome thrill of taking lion roars point-blank in the face. This time Hildur joined in, his deep male basso rasping and thundering, almost shaking the car. Once they finished, we again listened intently. And again nothing. Now I was ready to leave. For journalistic purposes, I was prepared to list C-Boy as “missing, suspected dead.”

Wait, Rosengren said. There was a scuffle in the darkness around us. Give me your headlamp, he said. Swinging the beam from left to right, across Hildur and the others, Rosengren brought it to rest on a new figure, a large one, with a very dark mane: C-Boy. He was back. He had come running to the sound of their roars.

His face was smooth. His flanks and buttocks were intact. Whomever the Killers had mugged two nights ago, it wasn’t him. He settled comfortably beside the collared female. Soon he’d be mating again. He was an eight-year-old lion, healthy and formidable, commanding respect within a pride.

It was all very temporary. C-Boy’s life might stretch forward a few years, beyond this moment, into infirmity, injury, mayhem, displacement, starvation, and death. The Serengeti offers no mercy to the elderly, the unlucky, or the impaired. He wouldn’t always be happy. But he looked happy now.

Credits: National Geographic