People have long exploited birds, predominantly for their feathers, meat, and eggs. Among the least likely item on such lists includes something the average person today would consider to have little or no practical purpose—poop.
Yet, for centuries human ingenuity has discovered incredible ways to utilize this waste product, ranging from ingredients for generating munitions to creating skin care products. Here’s the scoop on just a few items, some still in use today.
The Obvious One—Fertilizer, of Course
Anyone who has parked his or her car near some trees only to return hours later and find the vehicle splattered with white, pasty dung has experienced the typical revulsion towards bird poop. The scorn of municipalities that’s frequently directed towards pigeons is due in large part to their unsightly feces on sidewalks and building walls (1). Similarly, the massive amounts of droppings left behind around walkways, parks, and statues by the common starling, a bird that roosts in large numbers, has in turn resulted in animosity toward the migrating creatures (2). In suburbia, larger birds are problematic. To maintain areas clear for human activity, officials now drive flocks of Canada geese away from public lakes, golf courses, and waterways (3). With this almost war-on-birds mentality, you’d think that for many folks, birds are more often than not a nuisance.
But not all poop is reviled (nor the birds that produce it). In some areas of the world, bird feces—known as guano—once fueled a lucrative fertilizer industry. The extensive layers of droppings left by Guanay cormorants, brown pelicans, Peruvian boobies, and other seabirds along Peru’s coast (4) have long been recognized by the native people there as a highly valued farming resource (5, 6). By the mid-19th century, outsiders had discovered that such areas in the Central Pacific and the Caribbean harbored what was colloquially called “white gold”, to be claimed, mined, and exported (7). The fertilizer craze of this period—growing populations require more food—resulted in naval skirmishes, piracy, forced slave labor, and island land-grabs (8). Since that time exploitative processes, from guano extraction to overfishing, have devastated this region’s bird populations (9, 10). The mountains of bird feces once deposited in these spots are no more.
An Explosive Combination
Doves are revered as symbols of peace; so, one may be surprised to learn that their droppings were once used by the British monarchy as a munitions ingredient (11, 12). Long before the marvels of modern chemistry, people relied instead on natural collections of potassium nitrate or saltpeter, a compound necessary for making gunpowder. Although not readily abundant, potassium nitrate turns out to be prevalent in… you guessed it… dried pigeon and dove feces. And since the citizenry’s dovecots were ideal sources for such dung, the British government laid claim to all saltpeter in those structures, making laws permitting agents of the crown to scrape and dig up the material (13). Bird droppings, thus, played an important, if oft forgotten, role in British history.
“No Fun” Beautifying Facials
Truth indeed is stranger than fiction, as yet another case clearly demonstrates. The bush warbler “nightingales” (uguisu) in Japan are known for their song, but the birds have quite a reputation, too, for what’s dispatched from their other end. Due to its moisturizing and restorative effects, their poop (uguisu no fun) has been used for centuries in that country as a skincare product. In particular, the droppings were applied to remove the white make-up worn by courtesans (geishas) and Kabuki actors. Such face paint traditionally contained lead and zinc, which were harsh on the skin, and the uguisu no fun’s urea and guanine helped combat the make-up’s damaging effects (14). Today, some spas in the United States charge more than $150 for a “Geisha facial”, and apparently, many celebrities are smitten with the treatments (15, 16, 17). Who knew that people would actually pay that kind of money to have sanitized bird poop applied to their face? I guess, as Alix Strauss of The New York Times says, “When it comes to fighting aging, many of us will try anything” (18).
A “Crappy”—but Popular—Form of Fundraising
And when it comes to the introduction of any new form of entertainment or fundraising, consider that folks will also line up to try a novel spin-off on an old game, especially if it involves bird feces—hence, the growing popularity of chicken-poop bingo. The rules are similar to the original game but in this version, of course, there are chickens and excrement. As the birds peck for food along a numbered grid, their droppings randomly fall, indicating the next spot to be called on players’ boards. The Wall Street Journal’s Stu Woo notes, “At least a few decades old, the chicken antics have become a popular staple at fairs, festivals and fundraisers in small-town America, and beyond.” (19) To the chagrin of animal rights activists, the game has made its way to New Orleans; Austin, Texas; Columbia, Illinois (20); Louisville, Kentucky (21); Durham, North Carolina (22); and other cities throughout the U.S.
Overall, who knew bird poop could serve so many functions? After researching this topic, I know I’ll never look at the unsightly mess on my car the same way again!
- Blechman, A.D. Pigeons: The Fascinating Saga of the World’s Most Revered and Reviled Bird. New York: Grove Press, 2006. pp. 1-2.
- Squires, N. “Rome’s eternal problem – starling droppings”, 11/27/2008. The Telegraph: http://www.telegraph.co.uk/news/earth/wildlife/3531770/Romes-eternal-problem-starling-droppings.html.
- Saslow, L. “Canada Geese: It’s Love and Hate”, 7/14/2002. The New York Times: http://www.nytimes.com/2002/07/14/nyregion/canada-geese-it-s-love-and-hate.html.
- Wilsdon, C. Smithsonian Q & A: Birds. New York: HarperCollins Publishers, 2006. pp. 200-201.
- Vergano, D. “Bird Droppings Led to U.S. Possession of Newly Protected Pacific Islands”, 9/26/2014. National Geographic: http://news.nationalgeographic.com/news/2014/09/140926-pacific-island-guano-national-monument-history/.
- Hager, T. The Alchemy of Air. New York: Broadway Books, Random House, Inc. 2008. p. 29.
- Vergano, D.
- Hager, T. pp. 25-36.
- Wilsdon, C. pp. 200-201.
- Vergano, D.
- Blechman, A.D. pp. 1-2.
- Cressy, D. Saltpeter: The Mother of Gunpowder. Oxford, UK: Oxford University Press, 2013. p. 132.
- Cressy, D. p. 132.
- Freeman, S. “Geisha Facials”, 1/11/2010. HowStuffWorks: http://health.howstuffworks.com/skin-care/beauty/skin-treatments/geisha-facial.htm.
- Freeman, S.
- Connell, C. “The most cringe inducing facial ever: The good news – it beats Botox. The bad news – it’s made from birds’ mess”, 5/28/2014: DailyMail: http://www.dailymail.co.uk/femail/article-2641957/The-cringe-inducing-facial-The-good-news-beats-Botox-The-bad-news-birds-mess.html.
- Strauss, A. “Skin Deep: Fertilizer for the Face”, 7/4/2012. The New York Times: http://www.nytimes.com/2012/07/05/fashion/fertilizer-for-the-face-beauty-industry-turns-to-animal-secretions-and-droppings-for-ingredients.html?_r=0.
- Strauss, A.
- Woo, S. “Bingo! Henny the Hen Just Made Her ‘Mark’ on No. 16”, 10/22/2012. The Wall Street Journal: http://www.wsj.com/articles/SB10000872396390443749204578048740198716834.
- Woo, S.
- Havens, S. “Lady cluck: Chicken poo bingo featured at this weekend’s Flea Off Market”, 11/6/2014. Insider, Louisville: http://insiderlouisville.com/uncategorized/chicken-shit-bingo/.
- Blythe, A. “Durham Farmers’ Market hosts chicken bingo fundraiser”, 12/20/2014. News & Observer: http://www.newsobserver.com/2014/12/20/4419181_chickens-leave-their-mark-on-bingo.html?rh=1.