Species Profile
Environmental Conservation Online System

Mariana Gray swiftlet (Aerodramus vanikorensis bartschi)

Kingdom: Animalia
Class: Aves
Order: Apodiformes
Family: Apodidae

Listing Status:   

General Information

The Mariana gray swiftlet has sooty black upper parts with a slightly paler rump. The underparts are dark gray but with a brownish tinge. Some white is present at the base of the feathers in the loreal region. The tarsi are naked and the irises are dark hazel. The plumage of both sexes is alike. Weights of 21 birds averaged 7.4 grams (range = 6.4 to 9.0 grams). Other measurements include: wing, average of 107.6 mm and 108 mm; tail, average of 52.3 mm; exposed culmen, average of 4.0 mm; tarsus, average of 10.4 mm, and wingspan, maximum of 233 mm.

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

  • States/US Territories in which the Mariana Gray swiftlet is known to occur:  Guam , Northern Mariana Islands
  • USFWS Refuges in which the Mariana Gray swiftlet is known to occur:  GUAM NATIONAL WILDLIFE REFUGE
  • For more information:  http://www.fws.gov/endangered/cfr1711.pdf

» Federal Register Documents

Most Recent Federal Register Documents (Showing 5 of 6 : view all)
Date Citation Page Title
04/29/2008 73 FR 23264 23266 Initiation of 5-Year Status Reviews for 70 Species in Idaho, Montana, Oregon, Washington, and the Pacific Islands
08/27/1984 49 FR 33881 33885 Determination of End. Status for 7 Birds & 2 Bats of Guam & Northern Mariana Islands; 49 FR 33881-33885
11/29/1983 48 FR 53729 53733 Proposed End. Status for Seven Birds & Two Mammals from Mariana Islands; 48 FR 53729-53733
12/30/1982 47 FR 58454 58460 Review of Vertebrate Wildlife for Listing as End. or Thr. Species
06/13/1979 44 FR 33915 Review of the Status of Ten Birds and Two Mammals from Guam

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
09/30/1991 Recovery Plan for the Mariana Islands Population of the Vanikoro Swiftlet (Aerodramus vanikorensis bartschi) View Implementation Progress Final
Other Recovery Documents (Showing 1 of 1 )
Date Citation Page Title Document Type
04/29/2008 73 FR 23264 23266 Initiation of 5-Year Status Reviews for 70 Species in Idaho, Montana, Oregon, Washington, and the Pacific Islands
  • Notice 5-year Review, Initiation

    • » Critical Habitat

    No critical habitat rules have been published for the Mariana Gray swiftlet.

    » Conservation Plans

    No conservation plans have been created for Mariana Gray swiftlet

    » Petitions

    No petition findings have been published for the Mariana Gray swiftlet.

    » Life History

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

    » Other Resources

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    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