Sage Sparrow2005

Sage Sparrow2005


Worldwide Species Action Plans

Sage Sparrow action planThe sage sparrow (Amphispiza belli) is a sagebrush obligate that can be common in its sagebrush shrubsteppe habitat. This assessment focuses on the only subspecies found within Region 2 of the USDA Forest Service, A. b. nevadensis. Breeding Bird Survey data indicate a decline in sage sparrow populations between 1966 and 1991 throughout the western United States. Within Region 2, sage sparrow populations in the Wyoming Basin and Southern Rockies physiographic strata have exhibited long-term declines. The sage sparrow is listed as a priority species in the Colorado and Wyoming Partners in Flight bird conservation plans. Reported sage sparrow population declines are likely linked to extensive alteration of sagebrush (Artemisia spp.) shrubsteppe habitat on the species breeding grounds. Though widespread, this habitat constitutes one of the most endangered ecosystems in North America due to extensive, ecologically transformative influences of livestock grazing and, to a lesser degree, alteration of natural fire regimes and invasion by exotic plant species. Loss and fragmentation of habitat due to agricultural, urban, suburban, energy, and road development also threaten the species.

  1. Aimophila belli
  2. Amphispiza belli cinerea
  3. Amphispiza belli clementeae
  4. Amphispiza belli belli
  5. Amphispiza belli canescens
  6. Amphispiza belli nevadensis
  7. Amphispiza belli
  8. NA, MA wc, sw

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