A groundbreaking study from the University of Hawaii at Mānoa has dismantled a half-century-old assumption about the islands' ecological history, finding no scientific evidence that indigenous Hawaiians hunted native waterbird species to extinction.
Published in the journal Ecosphere, the research challenges what has been taught as scientific fact for decades and offers an alternative explanation rooted in climate shifts, invasive species, and land use changes that occurred largely before Polynesian arrival or after European colonization.
The findings represent a significant shift in understanding Hawaii's ecological past and present. According to the study, now-endangered waterbirds were likely most abundant just before Europeans arrived, when wetland management formed a core aspect of Native Hawaiian society.
"So much of science is biased by the notion that humans are inevitable agents of ecocide, and we destroy nature wherever we go," said Kawika Winter, associate professor at Hawaii Institute of Marine Biology (HIMB) and co-author of the paper. "This idea has shaped the dominant narrative in conservation, which automatically places the blame for extinctions on the first people—the indigenous people—of a place."
The research methodology involved re-examining existing evidence without the bias that conservation science has increasingly faced criticism for—the assumption that people are separate from and inherently destructive to nature. Researchers began by identifying when extinct Hawaiian waterbird species were last observed in the fossil record.
The results proved illuminating. Of the 18 known species that went extinct, 10 disappeared before Hawaiians ever arrived on the islands. This fundamental fact alone undermines the narrative of indigenous-driven extinction.
The study examined existing literature alongside hard evidence including fossils and pollen samples. The analysis revealed a much greater likelihood that native Hawaiian seabirds went extinct from a combination of climactic shifts and species introduction, such as rats, rather than from previously assumed impacts of deforestation or overhunting.
This research parallels similar findings from other island ecosystems. In 2024, scientists at the University of Copenhagen used genetic testing to prove that Easter Island natives did not chop down all the trees on their island to build giant stone heads, debunking another long-held colonial narrative about indigenous ecological mismanagement.
Víctor Moreno-Mayar, Assistant Professor of Geogenetics at Copenhagen and author of the Easter Island paper, reached a similar conclusion: "the idea of ecological suicide is put together as part of a colonial narrative… this idea that these supposedly primitive people could not manage their culture or resources."
The implications for conservation efforts in Hawaii are substantial. The study's conclusions are expected to transform conservation actions, particularly for the recovery of endangered waterbird populations such as ʻalae ʻula (Gallinula chloropus) and ʻaeʻo (Himantopus mexicanus knudseni).
"Our study not only dispels this myth, but also contributes to a growing body of evidence that indigenous stewardship represents the best ways for native birds to thrive in a world where humans are not going away," Winter stated.
Melissa Price, an associate professor who runs the Wildlife Ecology Lab at the university's College of Tropical Agriculture and Human Resilience, emphasized the importance of wetland restoration. She noted that restoring wetland agro-ecosystems is critically important to bring these waterbirds into abundance again.
"If we wish to transform our islands from the 'Extinction Capital of the World' into the 'Recovery Capital of the World' we need to restore relationships between nature and communities," Price said.
The research represents more than a correction of historical record. It provides a foundation for conservation strategies that recognize indigenous knowledge and stewardship as essential components of ecological recovery, rather than obstacles to overcome. For Hawaii's endangered waterbirds and the communities working to protect them, this shift in scientific understanding could prove transformative.