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Aeʻo Recovery: A Bird's Second Chance
17 Aug
Summary
- Hawaiian stilt population grew from 200 to over 1,500 birds.
- Aeʻo reclassified from endangered to threatened in July 2026.
- Conservation success involved multiple agencies and communities.
The Hawaiian stilt, known as aeʻo, has experienced a significant population rebound, rising from an alarming low of approximately 200 individuals in the 1940s to over 1,500 birds today. This remarkable recovery is the result of more than five decades of concerted conservation initiatives.
Habitat loss and introduced predators had severely impacted this long-legged wetland bird. Legal protection, extensive wetland restoration, and diligent predator control, spanning over fifty years, have been crucial. In July 2026, this progress was officially recognized when the US Fish and Wildlife Service reclassified the aeʻo from federally endangered to threatened status.
A recent study, analyzing over 50 years of nesting data, further confirmed improvements in nesting and chick-fledging success. This research, encompassing 2,056 nests and 1,051 fledglings across nine Oʻahu wetlands between 1963 and 2020, indicated that active management, particularly predator exclusion and flood control, yielded the best reproductive results.
While the aeʻo's population has grown substantially, it remains conservation-dependent. Ongoing threats such as habitat modification, introduced predators, and the impacts of sea-level rise necessitate continued management. Expanding and restoring suitable wetland habitats is identified as a key strategy for ensuring the species' long-term survival amidst changing environmental conditions.
