Species Profile
Environmental Conservation Online System

Buena Vista Lake Ornate Shrew (Sorex ornatus relictus)

Kingdom: Animalia
Class: Mammalia
Order: Soricomorpha
Family: Soricidae

Listing Status:   

General Information

The Buena Vista Lake shrew (Sorex ornatus relictus) is one of nine subspecies of ornate shrew (Sorex ornatus) known to occur in California. Ornate shrews are primarily insectivorous (insect-eating) mammals that are the approximate size of a mouse. Shrews make up the family Soricidae. Shrews have a long snout, tiny bead-like eyes, ears that are concealed, or nearly concealed, by soft fur, and five toes on each foot. They are active day or night. When they are not sleeping, they are searching for food, namely insects and other small invertebrates. Shrews eat more than their own weight each day to avoid starvation and maintain their body weight at high rates of metabolism. The specific feeding and foraging habits of the Buena Vista Lake shrew are unknown. The Buena Vista Lake shrew's back is predominantly black with a buffy-brown speckling pattern, its sides are more buffy-brown than the upper surface, and its underside is smoke-gray. The tail is faintly bicolor and blackens toward the end both above and below. The Buena Vista Lake shrew grows to around 4 inches in total length, including a tail of about 1.5 inch. Adults weigh 0.14-0.27 ounce.

Lead Region:  California/Nevada Region (Region 8)
Date Listed: Mar 6, 2002

» Federal Register Documents

Most Recent Federal Register Documents (Showing 5 of 16 : view all)
Date Citation Page Title
01/24/2005 70 FR 3437 3461 Endangered and Threatened Wildlife and Plants; Final Rule to Designate Critical Habitat for the Buena Vista Lake shrew (Sorex ornatus relictus)
11/30/2004 69 FR 69578 69581 Proposed Critical Habitat Designation for the Buena Vista Lake Shrew: Proposed rule; notice of availability of draft economic analysis and reopening of public comment period.
08/19/2004 69 FR 51417 51442 Endangered and Threatened Wildlife and Plants; Proposed Designation of Critical Habitat for the Buena Vista Lake Shrew
06/13/2002 67 FR 40657 40679 Endangered and Threatened Wildlife and Plants; Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
03/06/2002 67 FR 10101 10113 ETWP; Endangered Status for the Buena Vista Lake Shrew (Sorex Ornatus Relictus)

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
09/30/1998 Recovery Plan for Upland Species of the San Joaquin Valley, California View Implementation Progress Final

» Critical Habitat

Current Critical Habitat Documents (Showing 2 of 2 )
Date Citation Page Title Document Type Status
01/24/2005 70 FR 3437 3461 Endangered and Threatened Wildlife and Plants; Final Rule to Designate Critical Habitat for the Buena Vista Lake shrew (Sorex ornatus relictus) Final Rule Active
08/19/2004 69 FR 51417 51442 Endangered and Threatened Wildlife and Plants; Proposed Designation of Critical Habitat for the Buena Vista Lake Shrew Proposed Rule Not Required

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

» Conservation Plans

Habitat Conservation Plans (HCP) (learn more) (Showing 1 of 1 )
HCP Plan Summaries
Kern Water Bank

» Petitions

Most Recent Petition Findings (Showing 1 of 1 )
Date Citation Page Title Finding
12/30/1988 53 FR 53030 53031 Findings on Petitions & Initiation of Status Reviews; 53 FR 53030-53031
  • Notice 90-day Petition Finding, Substantial
  • » 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