Sensitive Species List

White-tailed ptarmigan, Denny Bohon

Under agency policy, Regional Foresters identify native plants and animals ("sensitive" species) that show evidence of decline and potential sensitivity to national forest and national grassland activities and management. The Forest Service provides special management attention to these species to conserve them on the lands and watersheds we manage and avoid contributing to their continued decline and eventual need for listing under the national Endangered Species Act.

On this page is the current list of Regional Forester sensitive species for the Rocky Mountain Region (Region 2) of the National Forest and Grassland System. A map of Region 2 is available for viewing. You may also download a copy of the Region 2 FSM 2670 Amendment (December 18, 2018) containing the current sensitive species list and the procedures and criteria used to identify them.

ANIMALS

(N = 85)

Amphibians (n = 5)
Boreal toad Anaxyrus boreas boreas	Evaluation	Rationale
Columbia spotted frog, Region-wide Rana luteiventris Bighorn pop.	Evaluation Evaluation	Rationale
Northern leopard frog Lithobates pipiens	Evaluation	Rationale
Plains leopard frog Lithobates blairi	Evaluation	Rationale
Wood frog, Region-wide Lithobates sylvaticus Bighorn pop. Southern Rockies pop.	Evaluation Evaluation Evaluation	Rationale
Birds (n = 30)
American bittern Botaurus lentiginosus	Evaluation	Rationale
Black swift Cypseloides niger	Evaluation	Rationale
Black tern Chlidonias niger	Evaluation	Rationale
Black-backed woodpecker Picoides arcticus	Evaluation	Rationale
Boreal owl Aegolius funereus	Evaluation	Rationale
Brewer's sparrow Spizella breweri	Evaluation	Rationale
Burrowing owl Athene cunicularia	Evaluation & Rationale
Cassin's sparrow Peucaea cassinii	Evaluation	Rationale
Chestnut-collared longspur Calcarius ornatus	Evaluation	Rationale
Columbian sharp-tailed grouse Tympanuchus phasianellus columbianus	Evaluation	Rationale
Ferruginous hawk Buteo regalis	Evaluation	Rationale
Flammulated owl Psiloscops flammeolus	Evaluation	Rationale
Grasshopper sparrow Ammodramus savannarum	Evaluation	Rationale
Greater prairie-chicken Tympanuchus cupido	Evaluation	Rationale
Greater sage-grouse Centrocercus urophasianus	Evaluation	Rationale
Harlequin duck Histrionicus histrionicus	Evaluation	Rationale
Lesser prairie-chicken Tympanuchus pallidicinctus	Evaluation & Rationale
Lewis's woodpecker Melanerpes lewis	Evaluation	Rationale
Loggerhead shrike Lanius ludovicianus	Evaluation	Rationale
Long-billed curlew Numenius americanus	Evaluation	Rationale
McCown's longspur Rhynchophanes mccownii	Evaluation	Rationale
Mountain plover Charadrius montanus	No evaluation	Rationale
Northern goshawk Accipiter gentilis	Evaluation	Rationale
Northern harrier Circus cyaneus	Evaluation	Rationale
Olive-sided flycatcher Contopus cooperi	Evaluation	Rationale
Purple martin Progne subis	Evaluation	Rationale
Sagebrush sparrow Artemisiospiza nevadensis	Evaluation	Rationale
Short-eared owl Asio flammeus	Evaluation	Rationale
Trumpeter swan Cygnus buccinator	Evaluation	Rationale
White-tailed ptarmigan Lagopus leucura	Evaluation	Rationale
Fishes (n = 19)
Bluehead sucker Catostomus discobolus	Evaluation	Rationale
Colorado River cutthroat trout Oncorhynchus clarkii pleuriticus	Evaluation	Rationale
Finescale dace Chrosomus neogaeus	Evaluation	Rationale
Flannelmouth sucker Catostomus latipinnis	Evaluation	Rationale
Flathead chub Platygobio gracilis	Evaluation	Rationale
Hornyhead chub Nocomis biguttatus	Evaluation	Rationale
Lake chub Couesius plumbeus	Evaluation #1 | #2	Rationale #1 | #2
Mountain sucker Catostomus platyrhynchus	Evaluation	Rationale
Northern redbelly dace Chrosomus eos	Evaluation	Rationale
Northern pearl dace Margariscus nachtriebi	Evaluation	Rationale
Plains minnow Hybognathus placitus	Evaluation	Rationale
Plains topminnow Fundulus sciadicus	Evaluation	Rationale
Rio Grande chub Gila pandora	Evaluation	Rationale
Rio Grande cutthroat trout Oncorhynchus clarkii virginalis	Evaluation	Rationale
Rio Grande sucker Catostomus plebeius	Evaluation	Rationale
Roundtail chub Gila robusta	Evaluation	Rationale
Southern redbelly dace Chrosomus erythrogaster	Evaluation	Rationale
Sturgeon chub Macrhybopsis gelida	Evaluation	Rationale
Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri	Evaluation	Rationale
Insects (n = 9)
Arogos skipper Atrytone arogos	Evaluation	Rationale
Arapahoe snowfly Capnia arapahoe	ESA candidate
Hudsonian emerald Somatochlora hudsonica	Evaluation	Rationale
Monarch Danaus plexippus plexippus	Evaluation	Rationale
Nokomis fritillary, or Great Basin silverspot Speyeria nokomis nokomis	Evaluation	Rationale
Ottoe skipper Hesperia ottoe	Evaluation#1 | #2	Rationale
Regal fritillary Speyeria idalia	Evaluation #1 | #2	Rationale
Susan's purse-making caddisfly Ochrotrichia susanae	Evaluation	Rationale
Western bumble bee Bombus occidentalis	Evaluation	Rationale
Mammals (n = 17)
American marten Martes americana	Evaluation	Rationale
Black-tailed prairie dog Cynomys ludovicianus	Evaluation	Rationale
American hog-nosed skunk Conepatus leuconotus	Evaluation	Rationale
Desert bighorn sheep Ovis canadensis nelsoni	Evaluation	Rationale
Fringed myotis Myotis thysanodes	Evaluation	Rationale
Gunnison's prairie dog Cynomys gunnisoni	Evaluation	Rationale
Hoary bat Lasiurus cinereus	Evaluation	Rationale
Kit fox Vulpes macrotis	Evaluation	Rationale
Pygmy shrew (Rocky Mountain pop.) Sorex hoyi	Evaluation	Rationale
River otter Lontra canadensis	Evaluation	Rationale
Rocky Mountain bighorn sheep Ovis canadensis canadensis	Evaluation	Rationale
Spotted bat Euderma maculatum	Evaluation	Rationale
Swift fox Vulpes velox	Evaluation	Rationale
Townsend's big-eared bat Conepatus leuconotus	Evaluation #1 | #2	Rationale
Water vole (Bighorn Mountain pop.) Microtus richardsoni	Evaluation	Rationale
White-tailed prairie dog Cynomys leucurus	Evaluation	Rationale
Wyoming pocket gopher Thomomys clusius	Evaluation & Rationale
Mollusks (n = 3)
Cooper's Rocky Mountain snail Oreohelix strigosa cooperi	Evaluation#1 | #2	Rationale
Pygmy Mountainsnail Oreohelix pygmaea	Evaluation	Rationale
Rocky Mountain capshell Acroloxus coloradensis	Evaluation	Rationale
Reptiles (n = 2)
Black Hills redbelly snake Storeria occipitomaculata pahasapae	Evaluation	Rationale
Massasauga Sistrurus tergeminus edwardsii	Evaluation	Rationale

PLANTS

(N = 87)

Angiosperms - Dicots (n = 60)
Absaroka Range beardtongue Penstemon absarokensis	Evaluation	Rationale
American cranberrybush Viburnum opulus var americanum	Evaluation #1 | #2	Rationale
Arizona willow Salix arizonica	Evaluation	Rationale
Aztec milkvetch Astragalus proximus	Evaluation	Rationale
Autumn willow Salix serissima	Evaluation #1 | #2	Rationale
Barr's milkvetch Astragalus barrii	Evaluation #1 | #2 | #3	Rationale
Barratt's willow Salix barrattiana	Evaluation	Rationale
Bill's neoparrya Neoparrya lithophila	Evaluation	Rationale
Bloodroot Sanguinaria canadensis	Evaluation	Rationale
Blueberry willow Salix myrtillifolia	Evaluation #1 | #2	Rationale
Brandegee's buckwheat Eriogonum brandegeei	No evaluation	Rationale
Cary's beardtongue Penstemon caryi	Evaluation #1 | #2	Rationale
Cathedral Bluff meadow-rue Thalictrum heliophilum	Evaluation	Rationale
Clawless draba Draba exunguiculata	Evaluation	Rationale
Colorado tansyaster Xanthisma coloradoense	Evaluation #1 | #2 | #3	Rationale
Common twinpod Physaria didymocarpa ssp lanata	Evaluation	Rationale
Cushion Townsend daisy Townsendia condensata	Evaluation	Rationale
Cushion bladderpod Physaria pulvinata	Evaluation	Rationale
Degener's beardtongue Penstemon degeneri	Evaluation	Rationale
Dropleaf buckwheat Eriogonum exilifolium	Evaluation #1 | #2	Rationale
Dwarf raspberry Rubus arcticusacaulis	Evaluation #1 | #2	Rationale
English sundew Drosera anglica	Evaluation	Rationale
Fremont's bladderpod Lesquerella fremontii	Evaluation	Rationale
Gray's draba Draba grayana	No evaluation	Rationale
Greenland primrose Primula egaliksensis	Evaluation #1 | #2	Rationale
Harrington's beardtongue Penstemon harringtonii	Evaluation	Rationale
Ice cold buttercup Ranunculus grayi	Evaluation	Rationale
Kotzebue's grass of Parnassus Parnassia kotzebuei	Evaluation	Rationale
Laramie columbine Aquilegia laramiensis	Evaluation	Rationale
Largeflower goldenweed Pyrrocoma carthamoides var subsquarrosa	Evaluation	Rationale
Lesser bladderwort Utricularia minor	Evaluation #1 | #2	Rationale
Lone Mesa snakeweed Gutierrezia elegans	Evaluation	Rationale
Mancos Shale packera Packera mancosana	Evaluation	Rationale
Many-stemmed goldenweed Pyrrocoma integrifolia	Evaluation	Rationale
Missouri milkvetch Astragalus missouriensis var. humistratus	Evaluation	Rationale
Pagosa Springs bladderpod Lesquerella pruinosa	Evaluation	Rationale
Park milkvetch Astragalus leptaleus	Evaluation #1 | #2	Rationale
Pike's Peak alpineparsley Oreoxis humilis	Evaluation	Rationale
Prairie dodder Cuscuta plattensis	Evaluation	Rationale
Ripley's milkvetch Astragalus ripleyi	Evaluation #1 | #2	Rationale
Rock cinquefoil Potentilla rupincola	Evaluation	Rationale
Rocky Mountain monkeyflower Mimulus gemmiparus	Evaluation	Rationale
Roundleaf sundew Drosera rotundifolia	Evaluation	Rationale
Rydberg's golden columbine Aquilegia chrysantha	Evaluation	Rationale
Sageleaf willow Salix candida	Evaluation #1 | #2	Rationale
Sandhill goosefoot Chenopodium cycloides	Evaluation	Rationale
Scarlet gilia Ipomopsis aggregata ssp. weberi	Evaluation #1 | #2	Rationale
Selkirk's violet Viola selkirkii	Evaluation	Rationale
Shoshone carrot Shoshonea pulvinata	Evaluation	Rationale
Siberian sea thrift Armeria maritima ssp sibirica	Evaluation	Rationale
Smith's draba Draba smithii	Evaluation	Rationale
Smooth northern-rockcress Braya glabella	Evaluation #1 | #2	Rationale
Stonecrop gilia Aliciella sedifolia	No evaluation	Rationale
Tranquil goldenweed Pyrrocoma clementis var. villosa	Evaluation #1 | #2	Rationale
Violet milkvetch Astragalus iodopetalus	Evaluation	Rationale
Visher's buckwheat Eriogonum visheri	Evaluation #1 | #2	Rationale
Weber's draba Draba weberi	Evaluation #1 | #2	Rationale
West Silver bladderpod Physaria scrotiformis	Evaluation	Rationale
Wheel milkweed Asclepias uncialis	Evaluation #1 | #2	Rationale
Wind River / Mountain tansymustard Descurainia torulosa	Evaluation	Rationale
Angiosperms - Monocots (n = 19)
Chamisso's cottongrass Eriophorum chamissonis	Evaluation	Rationale
Elliptic spikerush Eleocharis elliptica	Evaluation	Rationale
Foxtail sedge Carex alopecoidea	Evaluation #1 | #2	Rationale
Hall's bulrush Schoenoplectus hallii	Evaluation	Rationale
Largeflower tritelia Triteleia grandiflora	Evaluation #1 | #2	Rationale
Lesser panicled sedge Carex diandra	Evaluation	Rationale
Lesser roundleaved orchid Platanthera orbiculata	Evaluation #1 | #2	Rationale
Lividsedge Carex livida	Evaluation #1 | #2	Rationale
Mountain lady's slipper Cypripedium montanum	Evaluation	Rationale
Plains rough fescue Festuca hallii	Evaluation	Rationale
Porter's false needlegrass Ptilagrostis porteri	Evaluation	Rationale
Roundleaf orchid Galearis rotundifolia	Evaluation	Rationale
Simple bog sedge Kobresia simpliciuscula	Evaluation #1 | #2	Rationale
Slender cottongrass Eriophorum gracile	Evaluation #1 | #2	Rationale
Stream orchid Epipactis gigantea	Evaluation #1 | #2 | #3	Rationale
White adder's-mouth orchid Malaxis brachypoda	Evaluation	Rationale
Winding mariposa lily Calochortus flexuosus	Evaluation	Rationale
Lesser yellow lady's slipper Cypripedium parviflorum	Evaluation #1 | #2| #3 #4 | #5	Rationale
Yellow widelip orchid Liparis loeselii	Evaluation #1 | #2 | #3	Rationale
Gymnosperms
None
Ferns and Fern Allies (n = 5)
Club spikemoss Selaginella selaginoides	Evaluation #1 | #2	Rationale
Groundcedar Lycopodium complanatum	Evaluation	Rationale
Iowa moonwort Botrychium campestre	Evaluation #1 | #2	Rationale
Peculiar moonwort Botrychium paradoxum	Evaluation	Rationale
Trianglelobe moonwort Botrychium ascendens	Evaluation	Rationale
Non-vascular (n = 2)
Baltic sphagnum Sphagnum balticum	Evaluation	Rationale
Sphagnum Sphagnum angustifolium	Evaluation	Rationale