National Geographic
Menu

Building better bomas

National Geographic Big Cats Initiative (BCI) scientist Stuart Pimm ventures into East Africa to study bomas, the traditional shelters constructed to corral livestock. He visits two BCI grantees working with local herders to fortify bomas with wire and spiny plants in so-called ”living fences.” The hope is that if farm animals can be protected their owners will have no incentive to poison or otherwise persecute lions and leopards that prowl through cattle ranches near wildlife preserves at night.

This is only one way that the National Geographic Big Cats Initiative is trying to reduce the growing conflict between humans and big cats in Africa.

By Stuart Pimm

East of Tarangire National Park, Tanzania–Anne Kent Taylor is unmistakeable. It’s not the hat, the red blouse and scarf, and Maasai jewellery, but the way she greets everyone in the Mara. First comes a vigorous wave and then enthusiastic Swahili. To me, she talks in English with an accent that identifies her heritage (her father was a colonel in the British Army)–and upbringing (she was born in Ethiopia, grew up in Kenya).

Anne is a new National Geographic grantee. [Read her recent field reports from the Maasai Mara about how she is using her National Geographic Big Cats Initiative grant.] She received her money from the BCI a few weeks ago, so I’m in the Mara, in southwestern Kenya, to learn from her.

Anne-Kent-Taylor-photo.jpg

Photo of Anne Kent Taylor with an unidentified assistant (left) by Stuart Pimm

Anne protests: “I’m not a scientist. I have no training…” I interrupt these protestations–and continue to do so with ever more vigor over our next few days together. Scientific credentials be damned, Anne is a very effective conservation professional with a deep and effective understanding of what it takes to save nature. When I write my conservation textbook, she’ll be in it.

Delivering-chain-link-photo.jpg

Photo of wire fencing delivery by Stuart Pimm

A-better-boma-photo.jpg

Photo of a better boma by Stuart Pimm 

Anne’s solution is to build a better boma. A boma? The Oxford English Dictionary attributes the first English use of the word to Henry Stanley–he of “Dr. Livingstone, I presume,” fame. One gathers thorny bushes to create a circle around one’s camp. That way the lions don’t eat you. In this part of Africa, that is a distinct possibility if you sleep out at night.

(Tents seem to work, too. But listening to heavy breathing a few feet away on the other side of flimsy nylon fabric always has me worried. One night, a lion with a high IQ may change the balance of terror forever.)

Certainly, lions are not stupid. One strategy is to terrify the cattle inside a boma until they stampede out of it–to where your sister lions are waiting for an easy snack. Well, at least until the males come along and push them off the kill.

Cattle-are-wealth-photo.jpg

Photo by Stuart Pimm

For the Maasai, cattle are wealth and they don’t like the idea of losing it. Cattle are an essential requirement for getting a bride. So if I had just lost most of my wealth and any chance of marrying, I’d probably take it out on the lions too.

 
Big-Cats-Initative.jpg
Spears will do the trick, if you have sufficient pluck, but given the carcass of a dead cow and readily available and very deadly insecticides, sprinkling lethal powder on the remains will also do the job.

And it will kill anything else that comes to the kill too.

Stopping the misuse of very nasty poisons in East Africa is what Big Cats grantee Paula Kahumbu is trying to do. But that’s a story I will tell later.

Anne’s point is simple: “If there are no dead cattle, there’s nothing onto which to put poison.” Anne wants to make sure that lions, leopards, hyenas, and other predators can’t get into the bomas.

So with her team, Anne buys and delivers chain link fence. She charges the boma owners for half the fencing and they have to install it.

Click on the image to find out more about the Big Cats Intiative. Photo compilation courtesy of Beverly and Dereck Joubert

Three hundred and fifty kilometres (225 miles) to the southeast, Dr. Laly Lichtenfeld is also building better bomas. She, too, is a new Big Cats Initiative grantee. She’s trying a different technology, but the basic ideas are very similar.

Laly, husband Charles Trout, and the rest of her team also use chain link fence. Like Anne, they work closely with local communities, driving around working out where to deliver more chain link.

Laly has added a traditional twist. Commiphora africana–and I know no common name for it –has impressive thorns. In the dry season, when it looks simply like a dead twig, Laly’s team cuts them and sticks them in the ground in neat rows around the boma.

She’s the first to admit they look really silly. A line of thin dead sticks wouldn’t keep anything out. Although they look dead, when it rains, they spring to life. Trellised into the chain link fence, there will soon be a living wall of very spiny bush to make an impenetrable boma.

There’s something in all this that makes me pause. Why is important to protect lions outside of national parks? One answer is that lions move around a lot.

Each lion takes up an average of about ten square kilometres, so a pride of two males, four females, and their cubs, may occupy ten times that–about 40 square miles. That’s a rough guess, based on average densities in South Africa, but it gives a good idea of how much space a pride needs.

Lions wander and, when they do, they can get into trouble.

The more complicated answer is that Africa’s national parks may be large, but they aren’t large enough. Were it not for Anne and Laly’s efforts to save lions outside of protected areas, the lion populations inside might be too small to survive.

Video of Laly Lichtenfeld and Anne Kent Taylor in the field by Stuart Pimm 

What Anne and Laly are both doing is to make up for the inadequate design of parks that were designed to the surrounding areas in order to be ecologically viable. That’s a tall order. Their success–so dependent on support from the National Geographic Big Cats Initiative–is why this work is so very important to conserving lions and, very generally, how to manage biodiversity.

And that point will be the subject of my next blog, for Anne and Laly do very much more than build bomas. Why they do so much–and why it’s important for conservation, needs more words than I have here.

Incidentally, Anne and Laly have never met. I promised them both that I’ll help set up the first meeting of the Better Boma Builders.

Stuart Pimm.jpg

Professor Stuart L. Pimm is a conservation biologist at Duke University, North Carolina. A former member of the National Geographic Committee for Research and Exploration, Pimm is the author of dozens of books and research papers, including the book “The World According to Pimm: A Scientist Audits the Earth.”

 

 Earlier blog posts by Stuart Pimm>>

 

 

Anne Kent Taylor’s July/August 2010 field report:

NGS In the Field.jpg

Part One: Saving Africa’s last wild lions by fencing them out (July 23, 2010)

Part Two: Fences make predators more tolerable to Kenya farmers (July 25, 2010)

Part Three: Good fences make good neighbors of Kenya’s lions and herders (August 16, 2010)

 

Join Nat Geo News Watch community

Readers are encouraged to comment on this and other posts–and to share similar stories, photos and links–on the Nat Geo News Watch Facebook page. You must sign up to be a member of Facebook and a fan of the blog page to do this.

Leave a comment on this page

You may also email David Braun (dbraun@ngs.org) if you have a comment that you would like to be considered for adding to this page. You are welcome to comment anonymously under a pseudonym. 

Comments

  1. Ryan
    Ridgecrest
    January 31, 4:31 pm

    OK. BIG mistake. you obviously have no idea how low the lion population is. SO what you should do is try helping both the livestock and lions so you dont find yourselves in a world of trouble later on down the road. YEAH!!! poisoning the lions instead of using one little trankfilizer dart to take them and drop them off to a safe location where you know they will NOT come back. LOL what is wrong with people these days