In March of last year, a goat could be traded at a market in Niger’s Tahoua region for 179 kilograms (394 pounds) of millet, according to the FAO. By March this year, it took two goats to fetch the same amount of cereal.

“For the herders, it’s a double whammy,” says Paul Sitnam, West Africa director for humanitarian emergency affairs for World Vision, which works in Niger’s pastoral region. “The animal represents their capital. Their savings.”

Animals can feed children over time. UNICEF estimates that 1 million children in the Sahel face life-threatening malnutrition this year due to the drought, more than a third of them in Niger. The all-too-familiar period without rain in this former French colony of 16 million is so painful that it is called the “soudure” — French for “soldering” lips shut.

Aid groups have saved lives by trucking in food and setting up feeding centers. It’s an expensive fix, though, that does not mend a broken food chain. During the Sahel drought of 2005, it cost donors $80 a day to save the life of a severely malnourished child, according to United Nations figures. Preventing malnutrition would have cost just $1 a day.

But it’s a tough sell to get donors to save the goats which could prevent a child’s hunger.

“Pictures of starving goats do not attract aid in the same way as images of dying children,” says Maiga Ibrahim Soumaila, a representative of the United Nations Organization for the Coordination of Humanitarian Affairs.

For generations, nomads like Wantala have lived in a precarious equilibrium with the sky above them.

When the first rains come, they head north toward the Sahara desert, where the grass is said to be saltier, packed with minerals. They time their movements according to the clouds, waiting for the second major downpour before making a U-turn back to the greener south.

Herders keep both camels and goats. If a camel is an investment account like a 401(k), a goat is petty cash, traded during the lean season for bags of millet.

Wantala’s troubles began three years ago, when the rains abruptly stopped during the drought of 2010. He found himself stuck between two watering holes, dozens of miles from the nearest market. And while a camel can last 10 days without water under the blasting sun, goats and sheep will only live for two to three days, experts say.

By the time he reached the auction block, the ones that had survived were so thin they sold for almost nothing.

Out of goats by the end of 2010, Wantala was forced to begin selling his five camels. His only female camel became weak from the drought and died, robbing his family of their milk supply.

So last month, Wantala saddled Yedi one last time and rode to Sakabal, where nomads in varying degrees of despair were selling several dozen other camels. Each precious camel wore a leather pouch around its neck with a strip of paper, printed with recitations from the Quran, to protect it from the evil eye.

Despite their attempts, the nomads have not found an amulet to protect the camels from drought.

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Niger is no stranger to famine, and the worst droughts are remembered with special names. There was the one known as “the wind that carried away our children.” In 1968, herders lost between 50 and a 100 percent of their animals. Then, between 1972 to 1973, more than six million of Niger’s animals died, or half the national herd, according to historian and author Thurston Clarke.

Between those droughts, though, the rains returned, allowing people to rebuild their depleted herds. British charity Oxfam estimates that it takes three years to rebuild a herd of goats or sheep, and up to eight for cows and camels.

In recent years, herders have had no time to recover, hit by the relentless hammer of bad rains in 2005, in 2010 and again this year.

At the camel market this spring in Agadez, one of the northernmost points on the caravan route traced every year by herders, a skinny black-and-white goat with a mangy coat dropped down dead. Its owner immediately slit its throat, hoping a belated attempt to satisfy the Muslim ritual of bleeding the animal to death would allow him to sell the meat.

“He wasn’t sick,” the man babbled at a gathering audience. “He just didn’t have enough food.”

An adolescent camel also fell awkwardly, weak from hunger. It broke a foreleg, condemning it to the butcher’s lot. A tear trickled from the young animal’s eye as it was carted away.

The merciless frequency of the drought has wiped out the fortunes of even the most affluent nomads.

The style of Mobaga Bango’s black turban, wrapped in cords over his head and around his chin, shows that he was once a man of means. The old man now sits destroyed at the market in Bermo, his eyes watery as buyers poke his little cow with their staffs.

At home, he only has a few cups of millet left, and with 10 children and eight grandchildren to feed, the math of hunger is ruthless.

“It’s to pay for food,” he says weakly, as a trader squats beside him, receipt book in hand, to fill out the paperwork for the sale. Receipt No. 09189 is for his cow. “There was no grass,” he explains. “The drought is too much for us.”

The cow’s ribs are poking through her hide. He’ll only get half her normal value, and she is one of the few he was able to save.

In 2010, he lost around 80 head of cattle, and instantly went from the upper echelons of the herder class to the bottom rungs. This year, he lost seven more, a third of his remaining herd.

The old man rattles off the names of the cows he lost, like the names of ancestors: First was Saigna, then Ouage, Lelowaye, and Tidime, then came Wobe, Sekangi. Finally Tadia. And now he has sold Bague.

The old man used to wear flowing robes and elaborate turbans. Now the stitches in his pants are coming apart.

“Some people mock me — make fun of me because I’m poor now,” says the old man. “It’s okay, because I know there are people that don’t have so much as a single cow.”

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One of those people is Wantala, who is facing the end of his nomadic life.

Wantala tries not to think of Yedi’s pained cries, as the camel yanked his head around at the market to look for his master. The Tuaregs say camels are so attached to their keepers that they must be tied up for two or three months after they are sold, so they do not run back.

Yedi was bought by a Hausa, a farmer belonging to a sedentary ethnic group that lives south of the grasslands. An increasingly familiar sight in Niger is that of a camel pulling a Hausa’s plough.

Wantala used to make fun of the Hausas, calling them “the people who go to the bathroom in the same place where they went last year.” Now his clan, which has lost nearly all its camels, has asked the Hausas to teach them how to plant.

Wantala holds out his hands as a humiliating reminder of his fall. They are marred by calluses from holding a hoe for the first time.

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Callimachi reported this story from Sakabal, Dakoro and Bermo, Niger. Africa correspondent Michelle Faul contributed to this story from Agadez.