Sensitive Species List

White-tailed ptarmigan

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 monophyllos var. 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 (n = 1)
Whitebark pine
Pinus albicaulis
Evaluation Rationale
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