Species Profile
Environmental Conservation Online System

Mount Graham Red squirrel (Tamiasciurus hudsonicus grahamensis)

Kingdom: Animalia
Class: Mammalia
Order: Rodentia
Family: Sciuridae

Listing Status:   

General Information

The Mount Graham squirrel is tiny, weighing a mere 8 ounces (224 grams) and measuring about 8 inches in length, with a 6-inch long fluffy tail. Unlike many other squirrels, the Mount Graham species does not have a white-fringed tail. Females and males look much alike; they are grayish brown in color and have rusty and yellowish markings along their backs. Their underfur is white, with a dark line running through it during the summer.

Lead Region:  Southwest Region (Region 2)
Date Listed: Jun 3, 1987

  • States/US Territories in which the Mount Graham Red squirrel is known to occur:  Arizona

» Federal Register Documents

Most Recent Federal Register Documents (Showing 5 of 5 )
Date Citation Page Title
01/11/2006 71 FR 1765 1766 5-Year Review of Mt. Graham Red Squirrel and Little Colorado Spinedace
01/05/1990 55 FR 425 429 ETWP; Designation of Critical Habitat for the Endangered Tamiasciurus hudsonicus grahamensis (Mount Graham Red Squirrel); 55 FR 425 429
06/03/1987 52 FR 20994 20999 Determination of End. Status for Mount Graham Red Squirrel; 52 FR 20994- 20999
05/21/1986 51 FR 18630 18634 Proposed Determination of End. Status & Crit. Hab. for Mount Graham Red Squirrel; 51 FR 18630-18634
12/30/1982 47 FR 58454 58460 Review of Vertebrate Wildlife for Listing as End. or Thr. Species

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
05/03/1993 Mount Graham Red Squirrel View Implementation Progress Final
Other Recovery Documents (Showing 1 of 1 )
Date Citation Page Title Document Type
01/11/2006 71 FR 1765 1766 5-Year Review of Mt. Graham Red Squirrel and Little Colorado Spinedace
  • Notice 5-year Review
    • Five Year Review
    Date Title
    01/15/2008 Mount Graham Red Squirrel Completed 5-Yr Review

    » Critical Habitat

    Current Critical Habitat Documents (Showing 2 of 2 )
    Date Citation Page Title Document Type Status
    01/05/1990 55 FR 425 429 ETWP; Designation of Critical Habitat for the Endangered Tamiasciurus hudsonicus grahamensis (Mount Graham Red Squirrel); 55 FR 425 429 Final Rule Active
    05/21/1986 51 FR 18630 18634 Proposed Determination of End. Status & Crit. Hab. for Mount Graham Red Squirrel; 51 FR 18630-18634 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 Mount Graham Red squirrel

    » Petitions

    No petition findings have been published for the Mount Graham Red squirrel.

    » 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 21, 2009