NEPA--Environmental Assessment

Likelihood of
Species Status* Preferred Habitats Occurrence @
Season of
Occurrence Analysis Group
Western Burrowing FS, BCR, Grasslands (prairie dog Low N/A N/A, not known to
Owl
State colonies)
regularly occur in San Juan
County
White-faced Ibis FS, BLM Agricultural,
Low N/A N/A, not known to occur in
Riparian/Wetlands
(mudflats)
San Juan County
White-tailed
Ptarmigan
FS, PIF Alpine Tundra High Year Round Alpine Tundra
Willet PIF Riparian/Wetlands Low N/A N/A, not known to occur in
(mudflats)
San Juan County
Williamson’s BCR, PIF Ponderosa Pine, Mixed High Breeding Cavity Constructors
Sapsucker
Conifer, Spruce-Fir
Season
Wilson’s Phalarope BCR Riparian/Wetlands (lakes) Low N/A N/A, not known to occur in
San Juan County
Wilson’s Warbler PIF Riparian/Wetlands High Breeding Riparian/Wetland
(Riparian shrublands)
Season
Western Yellow- FS, BLM, Riparian/Wetlands Low N/A N/A, not known to occur in
billed Cuckoo BCR, ESA, (cottonwood gallery
San Juan County
Status Codes*:
State forest)
BCR = On Bird Conservation Region 16 (Southern Rockies/Colorado Plateau) Birds of Conservation Concern List (USDI FWS 2002).
BLM = On USDI Bureau of Land Management Colorado Bureau of Land Management Sensitive Fish and Wildlife Species List (USDI
BLM 2000). Effects to the species were analyzed in the Biological Evaluation.
ESA = Listed under the federal Endangered Species Act of 1973 as Threatened, Endangered, Proposed or Candidate for federal listing and
known or likely to occur or have habitat on lands administered by the SJFO (USDI FWS 2005). Effects to the species were
analyzed in the Biological Assessment.
FS = On USDA Forest Service Rocky Mountain Region (Region 2) Regional Forester’s Sensitive Species List (USDA FS 2003). Effects to
the species were analyzed in the Biological Evaluation
MIS = Management Indicator Species for the San Juan National Forest. Effects to the species were analyzed in a Wildlife Report.
PIF = On Colorado Partners in Flight Physiographic Area 62 List (Beidleman 2000).
State = On Colorado Division of Wildlife’s Listing of Endangered, Threatened and Wildlife Species of Special Concern (CDOW 2007).
Likelihood of Occurrence @ :
High = Species is known or thought likely to occur in the project area during either breeding or non-breeding seasons due to documented
occurrence or presence of suitable habitat. Species may occur in small numbers or in widely distributed areas.
Moderate = May occur in the project area during some years, but is unlikely to breed due to lack of habitat. Or, occurrence in the project
area is irregular and unpredictable and during the non-breeding season only.
Low = Species is not known or thought likely to breed or winter in the project area due to lack of suitable habitat.
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