Species Profile
Environmental Conservation Online System

Mariana Crow (Corvus kubaryi)

Kingdom: Animalia
Class: Aves
Order: Passeriformes
Family: Corvidae

Listing Status:   

General Information

A small black crow with a slight greenish black gloss on the head; back, wings and tail with bluish-black gloss; underparts with dull greenish-black gloss; bases of feathers light grayish, more nearly white on neck producing a somewhat ragged appearance; nasal bristles short but extending over nostrils and base of culmen; bill and feet black; iris dark brown. Female smaller. Immature resembles adult, but feathers with less gloss; wings and tail browner, but this characteristic may be of limited use in the field. Fledglings plumage is "ragged" looking, with white showing through from the bases of the feathers at numerous locations on the neck, back, and breast. Lower mandible near base has pink-tan showing

Lead Region:  Pacific Region (Region 1)
Date Listed: Aug 27, 1984

  • States/US Territories in which the Mariana Crow is known to occur:  Guam , Northern Mariana Islands
  • USFWS Refuges in which the Mariana Crow is known to occur:  GUAM NATIONAL WILDLIFE REFUGE

» Federal Register Documents

Most Recent Federal Register Documents (Showing 5 of 17 : view all)
Date Citation Page Title
01/11/2006 71 FR 1766 1767 Draft Revised Recovery Plan for the Aga or Mariana Crow (Corvus kubaryi)
08/17/2005 70 FR 48433 Endangered and Threatened Wildlife and Plants; Initiation of 5-Year Reviews of the Mariana Fruit Bat (Pteropus mariannus mariannus), etc.; Correction
07/06/2005 70 FR 38972 38975 Initiation of 5-Year Reviews of the Mariana Fruit Bat (Pteropus mariannus mariannus), Mariana Crow (Corvus hawaiiensis), Laysan Duck (Anas laysanensis), Kauai Akialoa (Honeycreeper) (Hemignathus procerus), Large Kauai Thrush (Myadestes myadestinus), Kauai Oo (Honeyeater) (Moho braccatus), Ou (Honeycreeper) (Psittirostra psittace), Molokai Creeper (Paroreomyza flammea), Molokai Thrush (Myadestes lanaiensis rutha), Kauai Cave Wolf Spider (Adelocosa anops) Kauai Cave Amphipod (Spelaeorchestia koloana), Alsinidendron obovatum (No Common Name), Amaranthus brownii (No Common Name), Chamaesyce celastroides var. kaenana (Akoko), Chamaesyce deppeana (Akoko), Chamaesyce herbstii (Akoko), Chamaesyce skottsbergii var. kalaeloana (Ewa Plains Akoko), Clermontia pyrularia (Oha Wai), Cyanea grimesiana ssp. obatae (No Common Name), Cyanea pinnatifida (Haha), Cyanea st.-johnii (Haha), Cyanea superba (Haha), Cyanea truncata (Haha), Cyrtandra dentate (Haiwale), Gouania vitifolia (No Common Name), Hedyotis degeneri (No Common Name), Hibiscadelphus woodii (Hau Kuahiwi), Castilleja levisecta (Golden paintbrush), Fender's Blue Butterfly (Icaricia icarioides fenderi), Erigeron decumbens var. decumbens (Willamette Daisy), Lupinus sulphureus ssp. kincaidii (Kincaid's Lupine), Lomatium bradshawii (Bradshaw's Desert Parsley), and Sidalcea nelsoniana (Nelson's Checker-mallow)
10/28/2004 69 FR 629446 Endangered and threatened wildlife and plants; designation of critical habitat for the mariana fruit bat and guam micronesian kingfisher on guam and the mariana crow on guam and in the commeonwealth of the northern mariana islands; final rule
06/02/2004 69 FR 31073 31074 Endangered and threatened wildlife and plants; determinations of prudency ofcritical habitat designation for two mammal and four bird species in Guam and the Commonwealth of the Northern Mariana Islands; designations of critical habitat for one mammal and two bird species in guam and the commonwealth of the Northern Mariana Islands; proposed rule; reopening of comment period, notice of availablity

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
01/11/2006 Draft Revised Recovery Plan for the Aga or Mariana Crow (Corvus kubaryi) View Implementation Progress Draft Revision 1
Other Recovery Documents (Showing 3 of 3 )
Date Citation Page Title Document Type
01/11/2006 71 FR 1766 1767 Draft Revised Recovery Plan for the Aga or Mariana Crow (Corvus kubaryi)
  • Notice Draft Recovery Plan Availability
    • 07/06/2005 70 FR 38972 38975 Initiation of 5-Year Reviews of the Mariana Fruit Bat (Pteropus mariannus mariannus), Mariana Crow (Corvus hawaiiensis), Laysan Duck (Anas laysanensis), Kauai Akialoa (Honeycreeper) (Hemignathus procerus), Large Kauai Thrush (Myadestes myadestinus), Kauai Oo (Honeyeater) (Moho braccatus), Ou (Honeycreeper) (Psittirostra psittace), Molokai Creeper (Paroreomyza flammea), Molokai Thrush (Myadestes lanaiensis rutha), Kauai Cave Wolf Spider (Adelocosa anops) Kauai Cave Amphipod (Spelaeorchestia koloana), Alsinidendron obovatum (No Common Name), Amaranthus brownii (No Common Name), Chamaesyce celastroides var. kaenana (Akoko), Chamaesyce deppeana (Akoko), Chamaesyce herbstii (Akoko), Chamaesyce skottsbergii var. kalaeloana (Ewa Plains Akoko), Clermontia pyrularia (Oha Wai), Cyanea grimesiana ssp. obatae (No Common Name), Cyanea pinnatifida (Haha), Cyanea st.-johnii (Haha), Cyanea superba (Haha), Cyanea truncata (Haha), Cyrtandra dentate (Haiwale), Gouania vitifolia (No Common Name), Hedyotis degeneri (No Common Name), Hibiscadelphus woodii (Hau Kuahiwi), Castilleja levisecta (Golden paintbrush), Fender's Blue Butterfly (Icaricia icarioides fenderi), Erigeron decumbens var. decumbens (Willamette Daisy), Lupinus sulphureus ssp. kincaidii (Kincaid's Lupine), Lomatium bradshawii (Bradshaw's Desert Parsley), and Sidalcea nelsoniana (Nelson's Checker-mallow)
  • Notice 5-year Review
    • 12/05/2002 67 FR 72407 72408 Endangered and threatened wildlife and plants; determinations of prudency for two mammal and four bird species in Guam and the Commonwealth of the nothern Mariana Islands and designations of critical habitat for one mammal and two bird species
  • Notice Doc. Availability
    • Five Year Review
    Date Title
    08/25/2009 Mariana crow completed 5-year review

    » Critical Habitat

    Current Critical Habitat Documents (Showing 3 of 3 )
    Date Citation Page Title Document Type Status
    10/28/2004 69 FR 629446 Endangered and threatened wildlife and plants; designation of critical habitat for the mariana fruit bat and guam micronesian kingfisher on guam and the mariana crow on guam and in the commeonwealth of the northern mariana islands; final rule Final Rule Active
    10/15/2002 67 FR 63737 63772 Endangered and Threatened Wildlife and Plants; Determinations of Prudency for Two Mammal and Four Bird Species in Guam and the Commonwealth of the Northern Mariana Islands and Proposed Designations of Critical Habitat for One Mammal and Two Birds Species Proposed Rule Not Required
    06/14/1991 56 FR 27485 27493 ETWP:Proposed Designation of Critical Habitat for the Little Mariana fruit bat, Mariana Fruit Bat, Guam Broadbill, Mariana Crow, Guam Micronesian King fisher, and Guam Bridled White-Eye; Proposed Rule Not Required

    To learn more about critical habitat please see http://criticalhabitat.fws.gov

    » Conservation Plans

    No conservation plans have been created for Mariana Crow

    » Petitions

    Most Recent Petition Findings (Showing 1 of 1 )
    Date Citation Page Title Finding
    01/20/1984 49 FR 2485 2488 Findings on Pending Petitions & Description of Progress on Listing Actions; 49 FR 2485-2488
  • Notice 12 month petition finding, Warranted but precluded

    • » Life History

    No Life History information has been entered into this system for this species.

    » Other Resources

    NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

    ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

    Last updated: November 22, 2009