It’s the economy: Peru guards bird dung as demand soars

“We are recovering some of the last guano remaining in Peru,” said Victor Ropón, 66, a supervisor from Ancash Province whose leathery skin reflects his years working on the guano islands since he was 17.

“There might be 10 years of supplies left, or perhaps 20, and then it will be completely exhausted,” said Ropón, referring to fears that the seabird population could be poised to fall sharply in the years ahead. It is a minor miracle that any guano at all is available here today, reflecting a century-old effort hailed by biologists as a rare example of sustainable exploitation of a resource once so coveted that the United States authorised its citizens to take possession of islands or keys where guano was found.

As a debate rages over whether global oil output has peaked, a parable may exist in the story of guano, with its seafaring treachery, the development of synthetic alternatives in Europe and a desperate effort here to prevent the deposits from being depleted.

“Before there was oil, there was guano, so of course we fought wars over it,” said Pablo Arriola, director of Proabonos, the state company that controls guano production, referring to conflicts like the Chincha Islands War, in which Peru prevented Spain from reasserting control over the guano islands. “Guano is a highly desirous enterprise.”

Guano is also an undeniably strenuous enterprise. The labourers rise before dawn to scrape the hardened guano with shovels and small pickaxes. Some wear handkerchiefs over their mouths and nostrils to avoid breathing in guano dust, which, fortunately, is almost odourless aside from a faint smell of ammonia.

The guano on most islands, including Isla de Asia, south of the capital, Lima, now reaches less than a foot or so. But the guano that remains here is coveted when viewed in the context of the frenzy in Peru and abroad around synthetic fertilizers like urea, which has doubled in price to more than $600 a ton in the last year.

Guano in Peru sells for about $250 a ton while fetching $500 a ton when exported to France, Israel and the United States. While guano is less efficient than urea at releasing nitrates into the soil, its status as an organic fertiliser has increased demand, transforming it into a niche fertiliser sought around the world.

That explains why Peru is so vigilant about preserving the remaining guano.

Peru’s government has restricted guano collection to about two islands a year, enabling the droppings to accumulate.