Scientists Debunk 50-Year Myth About Hawaii's Native Waterbirds

A groundbreaking study from the University of Hawaiʻi at Mānoa is overturning five decades of scientific belief about the extinction of Hawaii's native waterbirds. Researchers found no scientific evidence supporting the widely accepted narrative that Indigenous Hawaiians hunted these species to extinction. Instead, they propose a more complex explanation involving climate change, invasive species, and land use changes that occurred both before and after Polynesian arrival.

The study, published in the journal Ecosphere, challenges a fundamental assumption in conservation science that has shaped both research and policy for decades. Lead author Kristen Harmon, who recently earned her PhD from UH Mānoa's College of Tropical Agriculture and Human Resilience, noted that the research represents a broader shift in how scientists approach historical ecology and conservation assumptions.

"Science has matured to a point where graduate students are being trained to challenge its own long-standing world view," Harmon explained. The research team systematically reviewed existing data while setting aside the common assumption that humans are inherently destructive to natural systems. This approach revealed a more nuanced picture of how ecological changes occurred over time in Hawaii.

Associate Professor Kawika Winter, co-author and director of the Heʻeia National Estuarine Research Reserve, emphasized how bias has shaped conservation narratives. "So much of science is biased by the notion that humans are inevitable agents of ecocide, and we destroy nature wherever we go. 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 findings suggest that several waterbird species considered endangered today may have actually reached their highest population numbers just before European contact, when wetland management was central to Kānaka ʻŌiwi society. The study points to a growing body of evidence that Indigenous stewardship represents effective conservation strategies. The research could influence modern conservation approaches by highlighting the value of traditional ecological knowledge and Indigenous land management practices that sustained wildlife populations for centuries.