Peer Review Plan for Batch Delisting of Multiple Species Due to Extinction

The U.S. Fish and Wildlife Service developed this peer review plan for the proposed rule to remove 23 species from the federal species from the federal lists of endangered and threatened wildlife and plants due to extinction.

Publication date
Type of document
Completed
Media Usage Rights/License
Public Domain
Program
Close up of a California condor. Its pink featherless head contrasts with its black feathers.
We provide national leadership in the recovery and conservation of our nation's imperiled plant and animal species, working with experts in the scientific community to identify species on the verge of extinction and to build the road to recovery to bring them back. We work with a range of public...
A rocky shoreline of a river. The water is calm. Mist and green branches line the river.
The Ecological Services Program works to restore and protect healthy populations of fish, wildlife, and plants and the environments upon which they depend. Using the best available science, we work with federal, state, Tribal, local, and non-profit stakeholders, as well as private land owners, to...
Species
Historically, the southern acornshell occurred in the upper Coosa River system and upstream of the fall line on the Cahaba River in Alabama, Georgia, and Tennessee. The southern acornshell was last collected in 1973 from the Conasauga River in Georgia and from Little Canoe Creek, near the Etowah...
FWS Focus
The historical range of the upland combshell included portions of the Black Warrior, Cahaba, and Coosa Rivers of the Mobile River Basin and some of their tributaries in Alabama, Georgia, and Tennessee. The last known collection of the upland combshell was 1986 from the Conasauga River, Georgia (...
FWS Focus
The bridled white-eye on Guam was classified as one subspecies within a complex of bridled white-eye (Zosterops conspicillatus) populations found in the Mariana Islands (Pratt et al. 1979, p. 234; Jenkins 1983, p. 48; Pratt et al. 1987, p. 283). The Guam bridled white-eye is a small, warbler-like...
FWS Focus
The Moloka`i Creeper is five inches in length and described as either bright red or bright orange with dark wings and tail feathers. Female birds are darker olive-brown with some red/orange feathers.
FWS Focus
The Kauai akialoa is a large (17 to 19 centimeters [6.7 to 7.5 inches] total length), shorttailed Hawaiian honeycreeper with a very long, thin, decurved bill, the longest bill of any historically known Hawaiian passerine. The plumage of both sexes is olive-green; males are more brightly colored,...
FWS Focus
The Kaua`i `O`o, also known as the `O`o `a`a, is a black bird that measures approximately 8 inches long. Its belly and undertail coverts are brown, and its throat is streaked with white. Its one distinct feature is its yellow leg feathers which stands out against a black body.
FWS Focus
The Large Kaua`i Thrush is eight inches in length and is dull brown, tinged with olive, and a gray belly. The bill and legs are dark. It is the largest of the native thrushes.
FWS Focus
This species is a small fruit bat weighing approximately 152 g (5 oz) with a wingspan of 650 to 709 mm (25 to 28 in) (Tate 1934, Perez 1972). The abdomen and wings of the little Mariana fruit bat are dark brown while the mantle and sides of the neck are golden or brown. The top of the head is...
FWS Focus
The male Hawai`i `Akepa is bright red-orange, while the Maui male is dull bronze-yellow. The female `Akepa has a greenish top and yellow belly. This species has a short conical bill, a long, notched tail, and is usually four to five inches in length. The Hawai`i `Akepa is also known as `Akakane,...
FWS Focus
The Maui nukupuu is a medium-sized, approximately 23 gram, Hawaiian honeycreeper (family Fringillidae, subfamily Drepanidinae) with an extraordinarily thin, curved bill, slightly longer than the bird’s head. The lower mandible is half the length of the upper mandible and follows its curvature...
FWS Focus
Phyllostegia glabra var. lanaiensis is a robust, erect to decumbent, glabrous, perennial herb in the Lamiaceae (mint) family. Its leaves are thin, narrow, lance-shaped, 8 to 24 cm (3 to 9.5 in) long and 1.6 to 2.5 cm (0.6 to 1 in) wide, often red-tinged or with red veins, and toothed at their edges...
FWS Focus
The Po`ouli has a brown top and a buff belly washed with brown. It also wears a black mask that is offset by a white throat. It has a short black bill and long pale legs. This forest bird usually measures around five and a half inches.
FWS Focus
A black and white photo: from right to left, a back view of a man’s upper torso as an ivory-billed woodpecker climbs up the man’s left upper-arm while staring into the man’s face.

The Ivory-billed Woodpecker is noted for its striking black-and-white plumage; robust white, chisel-tipped bill; lemon-yellow eye; and pointed crest. Males are red from the nape to the top of their crest with black outlining the front of the crest. Females have a solid black crest which is...

FWS Focus
12 cm. Delicate warbler with slender, decurved bill. Adult male, black forecrown, grey hind-crown and nape, yellow forehead, eye-ring, lores, supercilium and throat. Yellow underparts with black patch on upper breast and white undertail. Olive-green upperparts, grey wings with olive fringes and...
FWS Focus
Subject tags
Endangered and/or Threatened species
Extinction