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We, the U.S. Fish and Wildlife Service (Service), propose to remove 23 species from the Federal Lists of Endangered and Threatened Wildlife and Plants due to extinction. This proposal is based on a review of the best available scientific and commercial information, which indicates that these species are no longer extant and, as such, no longer meet the definition of an endangered species or a threatened species under the Endangered Species Act of 1973, as amended (Act). We are seeking information and comments from the public regarding this proposed rule.

U.S. Fish and Wildlife Service, Proposed Rule, Removal of 23 Extinct Species From the Lists of Endangered and Threatened Wildlife and Plants

86 Federal Register 54298 (September 30, 2021)

Phyllostegia glabra var. lanaiensis

San Marcos gambusia

Scioto madtom

Little Mariana fruit bat

Flat pigtoe

Southern acornshell


Upland combshell

Green blossom pearly mussel

Tubercled blossom pearly mussel

Turgid blossom pearly mussel

Bachman’s warbler

Kaua’i akialoa

Kaua’i nukupu’u 

Kaua'i ‘o‘o


Maui akepa

Maui nukupu’u




Ivory-billed woodpecker


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