Silver Hill

Humboldt-Toiyabe National Forest · California · 4,423 acres · RoadlessArea Rule (2001)
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Observed Species (195)

Species with confirmed research-grade observation records from iNaturalist community science data.

Alfalfa (1)
Medicago sativa
American Black Bear (11)
Ursus americanus
American Coot (2)
Fulica americana
American Purple Vetch (1)
Vicia americana
American Robin (4)
Turdus migratorius
American Speedwell (2)
Veronica americana
American White Pelican (2)
Pelecanus erythrorhynchos
Anderson's Buttercup (1)
Ranunculus andersonii
Anderson's Clover (1)
Trifolium andersonii
Anderson's Thistle (1)
Cirsium andersonii
Antelope Bitterbrush (9)
Purshia tridentata
Bald Eagle (4)
Haliaeetus leucocephalusDL
Beaked Beardtongue (5)
Penstemon rostriflorus
Belding's Ground Squirrel (1)
Urocitellus beldingi
Biennial Cinquefoil (1)
Potentilla biennis
Big Sagebrush (4)
Artemisia tridentata
Big Western Juniper (8)
Juniperus grandis
Bitter Cherry (4)
Prunus emarginata
Black Cottonwood (1)
Populus trichocarpa
Black-headed Grosbeak (1)
Pheucticus melanocephalus
Bobcat (1)
Lynx rufus
Bottlebrush Squirrel-tail (1)
Elymus elymoides
Branching Scorpionweed (1)
Phacelia ramosissima
Brewer's Angelica (1)
Angelica breweri
Brewer's Blackbird (1)
Euphagus cyanocephalus
Brewer's Monkeyflower (1)
Erythranthe breweri
Brewer's Wildmint (1)
Monardella breweri
Brook Trout (1)
Salvelinus fontinalis
Brook-pimpernel (1)
Veronica anagallis-aquatica
Brown Creeper (1)
Certhia americana
Bulbous Bluegrass (2)
Poa bulbosa
Bull Thistle (1)
Cirsium vulgare
California Black Oak (1)
Quercus kelloggii
California Blue-eyed-grass (1)
Sisyrinchium bellum
California Ground Squirrel (1)
Otospermophilus beecheyi
California Poppy (1)
Eschscholzia californica
California Quail (1)
Callipepla californica
California Yerba Santa (1)
Eriodictyon californicum
Californian False Hellebore (1)
Veratrum californicum
Carpet Clover (1)
Trifolium monanthum
Cassin's Vireo (1)
Vireo cassinii
Choke Cherry (5)
Prunus virginiana
Clark's Nutcracker (1)
Nucifraga columbiana
Claybank Onion (10)
Allium lemmonii
Cliff Swallow (1)
Petrochelidon pyrrhonota
Common Horehound (1)
Marrubium vulgare
Common Monkeyflower (1)
Erythranthe guttata
Common Mullein (5)
Verbascum thapsus
Common Sunflower (1)
Helianthus annuus
Common Woolly-sunflower (2)
Eriophyllum lanatum
Common Yarrow (6)
Achillea millefolium
Coyote (1)
Canis latrans
Curl-leaf Mountain-mahogany (4)
Cercocarpus ledifolius
Curly-cup Gumweed (3)
Grindelia squarrosa
Curveseed Butterwort (2)
Ceratocephala testiculata
Desert Peach (5)
Prunus andersonii
Diffuse Groundsmoke (1)
Gayophytum diffusum
Dwarf False Ground-cherry (1)
Leucophysalis nana
Eared Grebe (2)
Podiceps nigricollis
English Plantain (1)
Plantago lanceolata
Fall Thistle (5)
Cirsium occidentale
False Monkeyflower (1)
Mimetanthe pilosa
Field Bindweed (2)
Convolvulus arvensis
Fireweed (1)
Chamaenerion angustifolium
Foothill Deathcamas (1)
Toxicoscordion paniculatum
Foxtail Barley (1)
Hordeum jubatum
Gadwall (1)
Mareca strepera
Giant Blazingstar (9)
Mentzelia laevicaulis
Giant Helleborine (1)
Epipactis gigantea
Golden Eagle (1)
Aquila chrysaetos
Grassy Tarweed (2)
Madia gracilis
Gray Hawk's-beard (1)
Crepis occidentalis
Gray Horsebrush (2)
Tetradymia canescens
Great Basin Wildrye (1)
Leymus cinereus
Green-tailed Towhee (2)
Pipilo chlorurus
Hairy Willowherb (1)
Epilobium ciliatum
Hoary Pincushion (3)
Chaenactis douglasii
Hoary Tansy-aster (4)
Dieteria canescens
Hooker's Balsamroot (2)
Balsamorhiza hookeri
Hooker's Evening-primrose (5)
Oenothera elata
Hot-rock Beardtongue (1)
Penstemon deustus
Jeffrey's Pine (2)
Pinus jeffreyi
Killdeer (2)
Charadrius vociferus
Lahontan Cutthroat Trout (5)
Oncorhynchus henshawi
Large-flower Collomia (3)
Collomia grandiflora
Largeleaf Avens (2)
Geum macrophyllum
Lazuli Bunting (1)
Passerina amoena
Least Chipmunk (1)
Neotamias minimus
Leichtlin's Mariposa Lily (12)
Calochortus leichtlinii
Long-spur Lupine (1)
Lupinus arbustus
Long-stalk Clover (1)
Trifolium longipes
Long-stalked Stitchwort (1)
Stellaria longipes
Long-tubed Evening-primrose (1)
Oenothera flava
Longleaf Hawk's-beard (2)
Crepis acuminata
Longleaf Suncup (2)
Taraxia subacaulis
Low Scorpionweed (2)
Phacelia humilis
Mallard (1)
Anas platyrhynchos
Meadow Goat's-beard (3)
Tragopogon dubius
Milky Kelloggia (2)
Kelloggia galioides
Mountain Bluebird (2)
Sialia currucoides
Mountain Chickadee (2)
Poecile gambeli
Mountain Snowberry (3)
Symphoricarpos rotundifolius
Mule Deer (6)
Odocoileus hemionus
Munite Prickly-poppy (22)
Argemone munita
Naked Buckwheat (3)
Eriogonum nudum
Narrowleaf Milkweed (1)
Asclepias fascicularis
Nettle-leaf Giant-hyssop (3)
Agastache urticifolia
Nevada Desert-parsley (1)
Lomatium nevadense
Newberry's Beardtongue (1)
Penstemon newberryi
Northern Bog Violet (1)
Viola nephrophylla
Northern Pintail (1)
Anas acuta
Northern Yellow Warbler (1)
Setophaga aestiva
Oregon Checker-mallow (1)
Sidalcea oregana
Oxeye Daisy (2)
Leucanthemum vulgare
Pacific Treefrog (2)
Pseudacris regilla
Panicled Willowherb (1)
Epilobium brachycarpum
Peregrine Thistle (1)
Cirsium cymosum
Pine Violet (1)
Viola purpurea
Ponderosa Pine (1)
Pinus ponderosa
Prairie Flax (1)
Linum lewisii
Primrose Monkeyflower (2)
Erythranthe primuloides
Purple Missionbells (2)
Fritillaria atropurpurea
Purple Nightshade (3)
Solanum xanti
Pursh's Milkvetch (2)
Astragalus purshii
Quaking Aspen (6)
Populus tremuloides
Rainbow Trout or Steelhead (2)
Oncorhynchus mykiss
Red-tailed Hawk (1)
Buteo jamaicensis
Red-winged Blackbird (1)
Agelaius phoeniceus
Redhead (1)
Aythya americana
Rock Wren (1)
Salpinctes obsoletus
Rough Eyelashweed (1)
Blepharipappus scaber
Royal Beardtongue (1)
Penstemon speciosus
Rubber Boa (1)
Charina bottae
Rubber Rabbitbrush (8)
Ericameria nauseosa
Ruddy Duck (1)
Oxyura jamaicensis
Showy Milkweed (5)
Asclepias speciosa
Sierra Gartersnake (1)
Thamnophis couchii
Single-leaf Pine (5)
Pinus monophylla
Siskiyou Mountains Owl's-clover (5)
Orthocarpus cuspidatus
Slender Buckwheat (2)
Eriogonum microtheca
Snowplant (2)
Sarcodes sanguinea
Spearleaf False Dandelion (2)
Agoseris retrorsa
Spotted Sandpiper (3)
Actitis macularius
Spreading Dogbane (3)
Apocynum androsaemifolium
Spreading Phlox (6)
Phlox diffusa
Steller's Jay (2)
Cyanocitta stelleri
Sticky-leaf Rabbitbrush (3)
Chrysothamnus viscidiflorus
Sulphur-flower Buckwheat (5)
Eriogonum umbellatum
Swamp Whiteheads (1)
Angelica capitellata
Sweetclover (1)
Melilotus officinalis
Tall Tumble-mustard (1)
Sisymbrium altissimum
Tall White Bog Orchid (1)
Platanthera dilatata
Tall Woolly Buckwheat (2)
Eriogonum elatum
Tassel Flower (2)
Brickellia grandiflora
Terrestrial Gartersnake (1)
Thamnophis elegans
Thorny Wire-lettuce (1)
Pleiacanthus spinosus
Thymeleaf Speedwell (1)
Veronica serpyllifolia
Tobacco Ceanothus (3)
Ceanothus velutinus
Tongue Clarkia (1)
Clarkia rhomboidea
Townsend's Solitaire (1)
Myadestes townsendi
Turkey Vulture (1)
Cathartes aura
Utah Serviceberry (2)
Amelanchier utahensis
Vesper Sparrow (2)
Pooecetes gramineus
Water Smartweed (4)
Persicaria amphibia
Wavyleaf Indian-paintbrush (3)
Castilleja applegatei
Wax Currant (3)
Ribes cereum
Waxy Checker-mallow (5)
Sidalcea glaucescens
West Coast Goldenrod (1)
Solidago elongata
Western Black Widow Spider (1)
Latrodectus hesperus
Western Blue Iris (2)
Iris missouriensis
Western Bluebird (1)
Sialia mexicana
Western Columbine (2)
Aquilegia formosa
Western Dwarf-mistletoe (2)
Arceuthobium campylopodum
Western Fence Lizard (2)
Sceloporus occidentalis
Western Joepye-weed (1)
Ageratina occidentalis
Western Peony (1)
Paeonia brownii
Western Rattlesnake (1)
Crotalus oreganus
Western Sweet-cicely (1)
Osmorhiza occidentalis
Western Wood-Pewee (1)
Contopus sordidulus
White Fir (2)
Abies concolor
White Sweetclover (1)
Melilotus albus
White-crowned Sparrow (1)
Zonotrichia leucophrys
White-faced Ibis (1)
Plegadis chihi
White-headed Woodpecker (2)
Leuconotopicus albolarvatus
Whitney's Milkvetch (1)
Astragalus whitneyi
Willet (1)
Tringa semipalmata
Woods' Rose (1)
Rosa woodsii
Woolly Mule's-ears (12)
Wyethia mollis
Wyoming Indian-paintbrush (2)
Castilleja linariifolia
Yellow Navarretia (1)
Navarretia breweri
Yellow Owl's-clover (1)
Orthocarpus luteus
Yellow-rumped Warbler (1)
Setophaga coronata
Yellow-staining Collomia (1)
Collomia tinctoria
alpine waterleaf (4)
Hydrophyllum alpestre
an amphipod (1)
Gammarus lacustris
Federally Listed Species (7)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring within this area based on range and habitat data. These designations do not indicate confirmed presence — they identify habitat where agency actions may require consultation under the Endangered Species Act.

Sierra Nevada Yellow-legged Frog
Rana sierraeEndangered
Gray Wolf
Canis lupus
Greater Sage-Grouse
Centrocercus urophasianus
Monarch
Danaus plexippusProposed Threatened
North American Wolverine
Gulo gulo luscus
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Sierra Nevada Red Fox
Vulpes vulpes necator
Other Species of Concern (13)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring based on range and habitat data.

American Dipper
Cinclus mexicanus
Bald Eagle
Haliaeetus leucocephalus
Black-throated Gray Warbler
Setophaga nigrescens
California Gull
Larus californicus
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Golden Eagle
Aquila chrysaetos
Hermit Warbler
Setophaga occidentalis
Lewis's Woodpecker
Melanerpes lewis
Olive-sided Flycatcher
Contopus cooperi
Pinyon Jay
Gymnorhinus cyanocephalus
Western Grebe
Aechmophorus occidentalis
Migratory Birds of Conservation Concern (13)

Birds of conservation concern identified by the U.S. Fish and Wildlife Service as potentially occurring based on range data. These species may warrant additional consideration under the Migratory Bird Treaty Act.

American Dipper
Cinclus mexicanus
Bald Eagle
Haliaeetus leucocephalus
Black-throated Gray Warbler
Setophaga nigrescens
California Gull
Larus californicus
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Golden Eagle
Aquila chrysaetos
Hermit Warbler
Setophaga occidentalis
Lewis's Woodpecker
Melanerpes lewis
Olive-sided Flycatcher
Contopus cooperi
Pinyon Jay
Gymnorhinus cyanocephalus
Western Grebe
Aechmophorus occidentalis
Vegetation (8)

Composition from LANDFIRE 2024 EVT spatial analysis. Ecosystems classified per NatureServe Terrestrial Ecological Systems.

California Mountain Chaparral
Shrub / Shrubland · 712 ha
GNR39.8%
California Mixed Conifer Forest
Tree / Conifer · 538 ha
GNR30.1%
Sierra Nevada Jeffrey Pine Forest
Tree / Conifer · 160 ha
GNR8.9%
Great Basin Big Sagebrush Shrubland
Shrub / Shrubland · 82 ha
G34.6%
California Mixed Conifer Forest
Tree / Conifer · 74 ha
GNR4.1%
Intermountain Mountain Sagebrush Steppe
Shrub / Shrubland · 53 ha
GNR3.0%
Sierra Nevada Lodgepole Pine Forest
Tree / Conifer · 29 ha
GNR1.6%
California High Mountain Meadow
Herb / Grassland · 24 ha
GNR1.4%

Silver Hill

Silver Hill Roadless Area

Humboldt-Toiyabe National Forest, California · 4,423 acres