Sensitive Wildlife Species

BLM Colorado Sensitive Wildlife Species of the Uncompahgre Field Office

Scientific NameCommon NameDesignation/Ranking by other Entities
Mammals
Corynorhinus townsendiiTownsend's big-eared batFS1; G4/S23
Euderma maculatumSpotted batFS1; G4/S23
Idionycteris phyllotisAllen's (Mexican) big-eared batFS1; G4/S23
Myotis thysanodesFringed myotisG5/S33
Myotis yumanensisYuma myotisG5/S33
Birds
Accipter gentilisNorthern goshawkFS1; G5/S3/S3B/S2N3
Buteo regalisFerruginous hawkFS1; G4/S3B/S4N3; SC2
Centrocercus minimusGunnison sage grouseG1/S13; SC2
Numenius americanusLong-billed curlewFS1; G5/S2B/SZN3; SC2
Plegadis chihiWhite-faced ibisFS1; G5/S2B/SZN3
Fish
Catostomus discobolusBluehead suckerG4/S43; SC2
Catostomus latipinnisflannelmouth suckerG3G4/S3S43; SC2
Gila robustaRoundtail chubG2G3/S23; SC2
Reptiles
Crotalus viridis concolorMidget faded rattlesnakeG5T4/S3?3; SC2
Gambelia wislizeniiLongnose leopard lizardG5/S13; SC2
Amphibians
Hyla arenicolorCanyon treefrogG5/S23; SC2
Rana pipiensNorthern leopard frogFS1; G5/S33; SC2
Invertebrates
Speyeria nokomis nokomisGreat Basin silverspot butterflyG4T2/S13
Gastropods
Acroloxus coloradensisRocky Mountain capshellFS1; G?/S23; SC2

1 Identified as sensitive species by the Regional Forester (Region 2) of the United States Forest Service
2 Identified as a "species of special concern" by the Colorado Division of Wildlife
3 Colorado Natural Heritage Program ranking

  • G1 - critically imperiled globally (5 or fewer occurences or very few remaining individuals); critically endangered throughout its range
  • G2 - imperiled globally (6 to 20 occurrences); endangered throughout its range
  • G3 - very rare or local throughout its range or found locally in a restricted range (21 to 100 occurences); threatened throughout its range
  • G4 - apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery
  • G5 - demonstrably secure globally, though it might be quite rare in parts of its range, especially at the periphery
    • T - taxa of subspecies or varieties, ranked on same criteria as G1-G5
  • G#? Indicates uncertainty about an assigned global rank
  • S1 - critically imperiled in Colorado (5 or fewer occurences or very few remaining individuals); critically endangered throughout Colorado
  • S2 - imperiled in Colorado (6 to 20 occurrences); endangered or threatened in Colorado
  • S3 - rare in Colorado (21 to 100 occurences)
  • S3S4 Watchlisted; specific occurrence data are collected and periodically analyzed to determine whether more active tracking is warranted 
  • S#B - refers to the breeding season imperilment of elements that are not permanent residents
  • S#N - refers to the non-breeding season imperilment of elements that are not permanent residents; where no consistent location can be discerned for migrants or non-breeding population, a rank of SZN is used
  • SZ - migrant whose occurences are too irregular, transitory and/or dispersed to be reliably identified, mapped and protected
  • S#? Indicates uncertainty about an assigned state rank