West Fork

Angeles National Forest · California · 1,169 acres · RoadlessArea Rule (2001)
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Observed Species (136)

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

(1)
Entoloma leucocarpum
(1)
Kovarikia oxy
(1)
Phidippus adumbratus
(1)
Stemonitopsis typhina
(1)
Ciboria aestivalis
(1)
Golovinomyces vincae
American Black Bear (2)
Ursus americanus
American Robin (1)
Turdus migratorius
Annual Honesty (1)
Lunaria annua
Arboreal Salamander (1)
Aneides lugubris
Beavertail Prickly-pear (2)
Opuntia basilaris
Big-cone Douglas-fir (3)
Pseudotsuga macrocarpa
Bigberry Manzanita (2)
Arctostaphylos glauca
Bighorn Sheep (1)
Ovis canadensis
Bigleaf Maple (1)
Acer macrophyllum
Black-Bellied Slender Salamander (4)
Batrachoseps nigriventris
Bushtit (1)
Psaltriparus minimus
California Broomshrub (2)
Lepidospartum squamatum
California Ground Squirrel (2)
Otospermophilus beecheyi
California Newt (9)
Taricha torosa
California Polypody (1)
Polypodium californicum
California Quail (2)
Callipepla californica
California Sage (1)
Salvia columbariae
California Scorpionweed (2)
Phacelia minor
California Sycamore (1)
Platanus racemosa
California Treefrog (10)
Pseudacris cadaverina
California common scorpion (2)
Paruroctonus silvestrii
Canyon Liveforever (7)
Dudleya cymosa
Canyon Wren (1)
Catherpes mexicanus
Chaparral Currant (1)
Ribes malvaceum
Coast Horned Lizard (3)
Phrynosoma blainvillii
Coast Mountain Kingsnake (8)
Lampropeltis multifasciata
Coast Night Snake (1)
Hypsiglena ochrorhynchus
Coastal Woodfern (1)
Dryopteris arguta
Common Horehound (1)
Marrubium vulgare
Common Sand-aster (1)
Corethrogyne filaginifolia
Common Side-blotched Lizard (5)
Uta stansburiana
Common Yarrow (2)
Achillea millefolium
Dark-eyed Junco (1)
Junco hyemalis
Distant Scorpionweed (2)
Phacelia distans
Eastwood's Manzanita (1)
Arctostaphylos glandulosa
Elegant Rockcress (1)
Boechera californica
Ensatina (2)
Ensatina eschscholtzii
Fragile Fern (1)
Cystopteris fragilis
Giant Blazingstar (1)
Mentzelia laevicaulis
Giant Chainfern (1)
Woodwardia fimbriata
Giant Pinedrops (1)
Pterospora andromedea
Golden Ear-drops (1)
Ehrendorferia chrysantha
Gray Fox (4)
Urocyon cinereoargenteus
Greata's Aster (1)
Symphyotrichum greatae
Grinnell's Beardtongue (1)
Penstemon grinnellii
Gum Rock-rose (1)
Cistus ladanifer
Heartleaf Beardtongue (3)
Keckiella cordifolia
Hoary Rock-rose (1)
Cistus creticus
Humboldt Lily (8)
Lilium humboldtii
Hummingbird-trumpet (2)
Epilobium canum
Imbricate Scorpionweed (1)
Phacelia imbricata
Incense Cedar (1)
Calocedrus decurrens
Indian-fig (1)
Opuntia ficus-indica
June Mushroom (1)
Gymnopus dryophilus
Lanceleaf Live-forever (2)
Dudleya lanceolata
Large-flower Scorpionweed (1)
Phacelia grandiflora
Largeleaf Periwinkle (2)
Vinca major
Lemon Lily (7)
Lilium parryi
Magpie Inky Cap (1)
Coprinopsis picacea
Mexican Catchfly (1)
Silene laciniata
Mojave Scorpionweed (1)
Phacelia mohavensis
Mt. Gleason paintbrush (1)
Castilleja gleasoni
Mule Deer (3)
Odocoileus hemionus
Narrowleaf Swordfern (2)
Polystichum imbricans
Orobus-seed Liverwort (1)
Targionia hypophylla
Pacific Treefrog (1)
Pseudacris regilla
Palmer's Mariposa Lily (4)
Calochortus palmeri
Parish's Goldenweed (2)
Ericameria parishii
Peirson's Lupine (1)
Lupinus peirsonii
Pine Green-gentian (1)
Frasera neglecta
Pink Feather Boa Millipede (1)
Gosodesmus claremontus
Plummer's Mariposa Lily (3)
Calochortus plummerae
Purple Nightshade (2)
Solanum xanti
Purple-and-white Blue-eyed Mary (1)
Collinsia heterophylla
Purple-staining California Milk Cap (1)
Lactarius californiensis
Rainbow Trout or Steelhead (2)
Oncorhynchus mykiss
Red-crowned Amazon (1)
Amazona viridigenalis
Red-masked Parakeet (1)
Psittacara erythrogenys
Red-shouldered Hawk (1)
Buteo lineatus
Redberry Buckthorn (1)
Rhamnus crocea
Ribbon Jumping Spider (1)
Metacyrba taeniola
Rose Clover (1)
Trifolium hirtum
Roundleaf Boykinia (2)
Boykinia rotundifolia
San Gabriel Bedstraw (1)
Galium grande
San Gabriel Chestnut (7)
Glyptostoma gabrielense
San Gabriel Linanthus (2)
Linanthus concinnus
Scarlet Monkeyflower (2)
Erythranthe cardinalis
Short-lobe Scorpionweed (3)
Phacelia brachyloba
Silver Garden Orbweaver (1)
Argiope argentata
Slotted Lancetooth (1)
Haplotrema caelatum
Small Stagshorn (1)
Calocera cornea
Small-leaf Spiderwort (1)
Tradescantia fluminensis
Snowplant (1)
Sarcodes sanguinea
Southern Alligator Lizard (4)
Elgaria multicarinata
Splitgill (4)
Schizophyllum commune
Spotted Owl (1)
Strix occidentalis
Sticky Thorough-wort (1)
Ageratina adenophora
Striped Racer (1)
Masticophis lateralis
Striped Skunk (1)
Mephitis mephitis
Sugar Sumac (1)
Rhus ovata
Tall Silky Lupine (4)
Lupinus elatus
Tehachapi Ragwort (1)
Packera ionophylla
Thevenet's Trapdoor Spider (1)
Hebestatis theveneti
Tiger Whiptail (1)
Aspidoscelis tigris
Trask Shoulderband (2)
Helminthoglypta traskii
Turkey Tail (1)
Trametes versicolor
Two-striped Gartersnake (6)
Thamnophis hammondii
Urn-flowered Alumroot (1)
Heuchera elegans
Veiled Polypore (1)
Cryptoporus volvatus
Western Fence Lizard (3)
Sceloporus occidentalis
Western Gray Squirrel (1)
Sciurus griseus
Western Patch-nosed Snake (2)
Salvadora hexalepis
Western Poppy (1)
Papaver californicum
Western Rattlesnake (3)
Crotalus oreganus
Western Skink (1)
Plestiodon skiltonianus
Western Toad (2)
Anaxyrus boreas
White Alder (1)
Alnus rhombifolia
White-banded Crab Spider (1)
Misumenoides formosipes
Withered Snapdragon (2)
Sairocarpus multiflorus
Woolly Indian-paintbrush (1)
Castilleja foliolosa
Woolly Inky Cap (1)
Coprinellus flocculosus
Woolly Mountain-parsley (1)
Oreonana vestita
Woolly-pod Milkweed (1)
Asclepias eriocarpa
Wrentit (1)
Chamaea fasciata
Yellow Dung Mushroom (1)
Bolbitius titubans
Yellow-yarrow (1)
Eriophyllum confertiflorum
a fungus (1)
Calyptella capula
a fungus (1)
Paragalactinia michelii
a fungus (1)
Peniophora albobadia
splendid woodland-gilia (1)
Saltugilia splendens
Federally Listed Species (13)

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.

Braunton's Milkvetch
Astragalus brauntoniiEndangered
Coastal California Gnatcatcher
Polioptila californica californicaThreatened
Least Bell's Vireo
Vireo bellii pusillusEndangered
Nevin's Barberry
Berberis neviniiEndangered
Slender-horned Spineflower
Dodecahema leptocerasEndangered
Southwestern Willow Flycatcher
Empidonax traillii extimusEndangered
California Condor
Gymnogyps californianusE, XN
California Spotted Owl
Strix occidentalis occidentalis
Monarch
Danaus plexippusProposed Threatened
Santa Ana Speckled Dace
Rhinichthys gabrielinoProposed Threatened
Southwestern Pond Turtle
Actinemys pallidaProposed Threatened
Other Species of Concern (22)

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

Allen's Hummingbird
Selasphorus sasin
Bald Eagle
Haliaeetus leucocephalus
Belding's Savannah Sparrow
Passerculus sandwichensis beldingi
Black Swift
Cypseloides niger
Black-chinned Sparrow
Spizella atrogularis
Bullock's Oriole
Icterus bullockii
California Gull
Larus californicus
California Thrasher
Toxostoma redivivum
Cassin's Finch
Haemorhous cassinii
Channel Island Song Sparrow
Melospiza melodia graminea
Golden Eagle
Aquila chrysaetos
Lawrence's Goldfinch
Spinus lawrencei
Northern Harrier
Circus hudsonius
Nuttall's Woodpecker
Dryobates nuttallii
Oak Titmouse
Baeolophus inornatus
Olive-sided Flycatcher
Contopus cooperi
Pinyon Jay
Gymnorhinus cyanocephalus
Saltmarsh Common Yellowthroat
Geothlypis trichas sinuosa
Western Screech-Owl
Megascops kennicottii cardonensis
White-headed Woodpecker
Dryobates albolarvatus gravirostris
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (20)

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.

Allen's Hummingbird
Selasphorus sasin
Bald Eagle
Haliaeetus leucocephalus
Black Swift
Cypseloides niger
Black-chinned Sparrow
Spizella atrogularis
Bullock's Oriole
Icterus bullockii
California Gull
Larus californicus
California Thrasher
Toxostoma redivivum
Cassin's Finch
Haemorhous cassinii
Common Yellowthroat
Geothlypis trichas
Golden Eagle
Aquila chrysaetos
Lawrence's Goldfinch
Spinus lawrencei
Oak Titmouse
Baeolophus inornatus
Olive-sided Flycatcher
Contopus cooperi
Pinyon Jay
Gymnorhinus cyanocephalus
Savannah Sparrow
Passerculus sandwichensis
Song Sparrow
Melospiza melodia
Spotted Owl
Strix occidentalis
Western Screech-Owl
Megascops kennicottii
Wrentit
Chamaea fasciata
Vegetation (5)

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

California Chaparral
Shrub / Shrubland · 222 ha
GNR46.9%
GNR18.3%
GNR9.3%
GNR2.9%

West Fork

West Fork Roadless Area

Angeles National Forest, California · 1,169 acres