Data / Federal rules / 2026-14550

Endangered and Threatened Wildlife and Plants; Reclassification of the Hawaiian Stilt (Kukuluae'o or Ae'o) From Endangered to Threatened With a Section 4(d) Rule

The Fish and Wildlife Service published this final rule in the Federal Register on July 20, 2026. It took effect on August 19, 2026.

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What the agency says

We, the U.S. Fish and Wildlife Service (Service), are reclassifying the Hawaiian stilt (kukuluae[revaps]o or ae[revaps]o, Himantopus mexicanus knudseni; a subspecies of the black-necked stilt (Himantopus mexicanus)) from endangered to threatened (downlist) under the Endangered Species Act of 1973, as amended (Act). This action is based on our evaluation of the best scientific and commercial data available, which indicates that the subspecies' status has improved such that it is not in danger of extinction throughout all or a significant portion of its range, but that it is still likely to become so within the foreseeable future. We also finalize protective regulations under the authority of section 4(d) of the Act that are necessary and advisable to provide for the conservation of the Hawaiian stilt. We recognize the Hawaiian names kukuluae[revaps]o and ae[revaps]o as additional common names.

Key facts

Document number: 2026-14550
Type: Final rule
Action: Final rule
Agency: Interior Department; Fish and Wildlife Service
Published: July 20, 2026
Takes effect: August 19, 2026
Dates: This rule is effective August 19, 2026.
Docket: Docket No. FWS-R1-ES-2020-0079; FXES1113090FEDR-267-FF09E22000
Regulation ID (RIN): 1018-BE02
Code of Federal Regulations: 50 CFR 17
Topics: Endangered and threatened species; Exports; Imports; Plants; Reporting and recordkeeping requirements; Transportation; Wildlife
Pages: 34

The document on federalregister.gov PDF

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Everything from the Fish and Wildlife Service · Rules on endangered and threatened species · Rules on exports · Rules on imports · Published in July 2026

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.