If you drove six hours south of Lima on the Pan-American Highway, got out of the car, and walked onto the arid, coastal plain, you wouldn’t realize you’d stumbled onto the legendary Nazca Lines. The vast, ancient geoglyphs stretch across nearly 200 square miles, and to know they’re there, you’d need to look upon them from above. An aerial perspective reveals geometric shapes, humanoid figures, and animals — some of which have been misidentified until now.
Sixteen of the animal geoglyphs are massive, sprawling birds. In a study published recently in the Journal of Archaeological Science: Reports, a team of Japanese researchers attempted to name their species. But they weren’t just trying to clarify the shapes etched on the dry land for ornithology’s sake. Understanding which birds the creators of the lines chose to feature brings us a step closer to understanding why the lines are there in the first place.
Instead of looking at the “general impression” of the geoglyphs, Eda and her team carefully examined each figure’s observable, morphological traits — their gargantuan beaks, necks, wings, and tails. Then, they took those notes and compared them to more than 2,000 scientific drawings of Peruvian birds.
At the end of this process, they confidently classified three of the geoglyphs as a pelican, a guano bird, and a hermit.
Previously, the hermit was famously known as “the hummingbird.” Its new reclassification helps characterize it in further detail. Hermits are tropical and subtropical hummingbirds, and in Peru, two varieties roost: the Koepcke’s hermit and the Reddish hermit.
While some of the remaining geoglyphs do look like recognizable birds — one, for example, looks quite like a heron — their characteristics were too inconsistent with modern Peruvian birds for the scientists to feel confident classifying them.
A crucial realization was that the three birds identified in the geoglyphs are not naturally found near the actual locations of the lines. Hermits, for example, live on the eastern slope of the Andes and in the north near Ecuador. Meanwhile, swooping pelicans live on the coast.
“The Naza people who drew the images could have seen pelicans while food-gathering on the coast,” Eda says. “Our findings show that they drew exotic birds, not local birds, and this could be a clue as to why they drew them in the first place.”
Scientists have tried to answer this question since the Nazca Lines were first systematically studied in 1926.
Johan Reinhard, a National Geographic explorer- in-residence, posits that they served multiple purposes.
“It seems likely that most of the lines did not point at anything on the geographical or celestial horizon, but rather led to places where rituals were performed to obtain water and fertility of crops,” Reinhard wrote in his book, The Nasca Lines: A New Perspective on Their Origin and Meaning.
Were these Peruvian birds flocking to the site of these rituals? That remains to be determined, but now scientists are equipped with more accurate clues.
(For the source of this, and many other equally interesting articles, please visit: https://www.inverse.com/article/56900-nazca-lines-bird-identification-science/)