Arroyo Seco

Angeles National Forest · California · 4,703 acres · RoadlessArea Rule (2001)
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Observed Species (483)

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

Arroyo Toad (3)
Anaxyrus californicusEndangered
(4)
Boechera arcuata
(4)
Golovinomyces vincae
(9)
Colonus hesperus
(20)
Kovarikia oxy
(4)
Mecaphesa
(11)
Phidippus adumbratus
(5)
Ortholasma coronadense
(6)
Apomastus schlingeri
(4)
Araneus andrewsi
Acorn Woodpecker (115)
Melanerpes formicivorus
African Woodsorrel (98)
Oxalis pes-caprae
Allen's Hummingbird (5)
Selasphorus sasin
American Black Bear (35)
Ursus americanus
American Bullfrog (3)
Lithobates catesbeianus
American Century Plant (24)
Agave americana
American Crow (7)
Corvus brachyrhynchos
American Robin (19)
Turdus migratorius
Anna's Hummingbird (26)
Calypte anna
Arabian Scurfpea (3)
Bituminaria bituminosa
Arboreal Salamander (23)
Aneides lugubris
Arroyo Willow (22)
Salix lasiolepis
Artemisia-leaf Pincushion (9)
Chaenactis artemisiifolia
Ash-throated Flycatcher (13)
Myiarchus cinerascens
Ashy Silktassel (8)
Garrya flavescens
Band-tailed Pigeon (65)
Patagioenas fasciata
Belladonna Lily (3)
Amaryllis belladonna
Bewick's Wren (15)
Thryomanes bewickii
Big Sagebrush (3)
Artemisia tridentata
Big-cone Douglas-fir (223)
Pseudotsuga macrocarpa
Bigberry Manzanita (153)
Arctostaphylos glauca
Bigleaf Maple (324)
Acer macrophyllum
Bird's-foot Cliffbrake (48)
Pellaea mucronata
Bitter Gooseberry (10)
Ribes amarum
Black Cottonwood (4)
Populus trichocarpa
Black Locust (7)
Robinia pseudoacacia
Black Phoebe (21)
Sayornis nigricans
Black Sage (303)
Salvia mellifera
Black-Bellied Slender Salamander (73)
Batrachoseps nigriventris
Black-chinned Sparrow (4)
Spizella atrogularis
Black-headed Grosbeak (13)
Pheucticus melanocephalus
Black-throated Gray Warbler (16)
Setophaga nigrescens
Bladder-senna (9)
Colutea arborescens
Blessed Milk-thistle (3)
Silybum marianum
Blewit (21)
Collybia nuda
Blue Field Gilia (19)
Gilia capitata
Blue-gray Gnatcatcher (18)
Polioptila caerulea
Blue-stem Beardtongue (113)
Keckiella ternata
Bobcat (16)
Lynx rufus
Bolander's Woodland-star (9)
Lithophragma bolanderi
Botta Clarkia (7)
Clarkia bottae
Bracken Fern (10)
Pteridium aquilinum
Branching Scorpionweed (29)
Phacelia ramosissima
Bright Cobblestone Lichen (5)
Acarospora socialis
Broadleaf Lupine (7)
Lupinus latifolius
Brook-pimpernel (11)
Veronica anagallis-aquatica
Broom Rushrose (7)
Crocanthemum scoparium
Brown Widow (4)
Latrodectus geometricus
Bull Thistle (6)
Cirsium vulgare
Bur Chervil (8)
Anthriscus caucalis
Burning Nettle (3)
Urtica urens
Bushtit (7)
Psaltriparus minimus
Bushy Spikemoss (54)
Selaginella bigelovii
California Bay (510)
Umbellularia californica
California Brickell-bush (80)
Brickellia californica
California Broomshrub (26)
Lepidospartum squamatum
California Buckeye (5)
Aesculus californica
California Buckwheat (607)
Eriogonum fasciculatum
California Chicory (5)
Rafinesquia californica
California Coffeeberry (60)
Frangula californica
California Cudweed (43)
Pseudognaphalium californicum
California Currant (33)
Ribes californicum
California Dodder (12)
Cuscuta californica
California Ground Squirrel (30)
Otospermophilus beecheyi
California Indigobush (4)
Amorpha californica
California Live Oak (199)
Quercus agrifolia
California Newt (392)
Taricha torosa
California Peony (6)
Paeonia californica
California Polypody (102)
Polypodium californicum
California Poppy (29)
Eschscholzia californica
California Quail (5)
Callipepla californica
California Sage (58)
Salvia columbariae
California Sagebrush (173)
Artemisia californica
California Scorpionweed (124)
Phacelia minor
California Scrub Jay (48)
Aphelocoma californica
California Scrub Oak (48)
Quercus berberidifolia
California Suncup (17)
Eulobus californicus
California Sweet-cicely (6)
Osmorhiza brachypoda
California Swollenstinger Scorpion (6)
Anuroctonus pococki
California Sycamore (71)
Platanus racemosa
California Thrasher (12)
Toxostoma redivivum
California Toothwort (19)
Cardamine californica
California Towhee (43)
Melozone crissalis
California Treefrog (557)
Pseudacris cadaverina
California Walnut (18)
Juglans californica
California asterella (36)
Calasterella californica
California common scorpion (37)
Paruroctonus silvestrii
Calyx-nose Monkeyflower (15)
Erythranthe nasuta
Camp Martin Paintbrush (49)
Castilleja martini
Canary Island pine (6)
Pinus canariensis
Canyon Bat (4)
Parastrellus hesperus
Canyon Live Oak (216)
Quercus chrysolepis
Canyon Liveforever (337)
Dudleya cymosa
Canyon Wren (49)
Catherpes mexicanus
Castor-bean (56)
Ricinus communis
Catchweed Bedstraw (31)
Galium aparine
Caterpillar Scorpionweed (94)
Phacelia cicutaria
Chaparral Currant (74)
Ribes malvaceum
Chaparral Snapdragon (13)
Sairocarpus coulterianus
Chaparral Whitethorn (252)
Ceanothus leucodermis
Cheatgrass (19)
Bromus tectorum
Chicory-leaf Wire-lettuce (51)
Stephanomeria cichoriacea
Chinese Elm (9)
Ulmus parvifolia
Cliff Desert-dandelion (43)
Malacothrix saxatilis
Coast Horned Lizard (19)
Phrynosoma blainvillii
Coast Mountain Kingsnake (16)
Lampropeltis multifasciata
Coast Range Melicgrass (8)
Melica imperfecta
Coastal Woodfern (121)
Dryopteris arguta
Coffee Fern (147)
Pellaea andromedifolia
Common Chamise (255)
Adenostoma fasciculatum
Common Chickweed (12)
Stellaria media
Common Coral Slime (12)
Ceratiomyxa fruticulosa
Common Dandelion (3)
Taraxacum officinale
Common Deadnettle (3)
Lamium amplexicaule
Common Eucrypta (12)
Eucrypta chrysanthemifolia
Common Eyelash (6)
Scutellinia scutellata
Common Fig (41)
Ficus carica
Common Goldenstar (3)
Bloomeria crocea
Common Horehound (60)
Marrubium vulgare
Common Mullein (144)
Verbascum thapsus
Common Oleander (10)
Nerium oleander
Common Pacific Peavine (148)
Lathyrus vestitus
Common Pill-bug (30)
Armadillidium vulgare
Common Poorwill (3)
Phalaenoptilus nuttallii
Common Raven (37)
Corvus corax
Common Rough Woodlouse (11)
Porcellio scaber
Common Sand-aster (57)
Corethrogyne filaginifolia
Common Side-blotched Lizard (249)
Uta stansburiana
Cooper's Hawk (13)
Astur cooperii
Cootamundra Wattle (14)
Acacia baileyana
Coppery Pax (4)
Paxillus cuprinus
Cougar (7)
Puma concolor
Coulter's Pine (61)
Pinus coulteri
Coville's Lipfern (33)
Myriopteris covillei
Coyote (3)
Canis latrans
Dark-eyed Junco (174)
Junco hyemalis
Deathstring Orb Weaver (12)
Cyclosa conica
Deer Mushroom (7)
Pluteus cervinus
Deerbrush (43)
Ceanothus integerrimus
Distant Scorpionweed (4)
Phacelia distans
Dog Vomit Slime Mold (5)
Fuligo septica
Domestic Cat (4)
Felis catus
Douglas' Horse-nettle (53)
Solanum douglasii
Douglas' Wood Beauty (11)
Drymocallis glandulosa
Douglas' Wormwood (181)
Artemisia douglasiana
Douglas-fir Cone Mushroom (6)
Strobilurus trullisatus
Downy Woodpecker (4)
Dryobates pubescens
Dragon Wormwood (12)
Artemisia dracunculus
Dudley's Clarkia (7)
Clarkia dudleyana
Dunn's Lobelia (9)
Palmerella debilis
Durango Root (5)
Datisca glomerata
Dwarf Chaparral False Willow (3)
Baccharis pilularis
Ear-leaf Nightshade (34)
Solanum mauritianum
Eastern Fox Squirrel (4)
Sciurus niger
Eastern Warbling-Vireo (6)
Vireo gilvus
Eastwood's Manzanita (71)
Arctostaphylos glandulosa
Elegant Rockcress (22)
Boechera californica
Emery Rocktripe Lichen (6)
Umbilicaria phaea
English Ivy (11)
Hedera helix
Ensatina (5)
Ensatina eschscholtzii
Ewan's Oak (7)
Quercus × ewanii
Fairy Inkcap (4)
Coprinellus disseminatus
Fall Thistle (68)
Cirsium occidentale
False Puffball (18)
Reticularia lycoperdon
Fendler's Meadowrue (6)
Thalictrum fendleri
Field Hedge-parsley (3)
Torilis arvensis
Flat-spine Bursage (6)
Ambrosia acanthicarpa
Floriferous Monkeyflower (14)
Erythranthe floribunda
Foothill Beardtongue (4)
Penstemon heterophyllus
Four-wing Saltbush (9)
Atriplex canescens
Fox Sparrow (7)
Passerella iliaca
Foxtail Brome (3)
Bromus rubens
Fragrant Pitcher-sage (22)
Lepechinia fragrans
Fragrant Sumac (5)
Rhus aromatica
Fremont Cottonwood (7)
Populus fremontii
Fringed Tubaria (3)
Tubaria furfuracea
Fuchsia-flower Gooseberry (4)
Ribes speciosum
Garden Nasturtium (12)
Tropaeolum majus
German Ivy (16)
Delairea odorata
Giant Blazingstar (11)
Mentzelia laevicaulis
Giant Canyon Woodlouse (13)
Porcellio dilatatus
Giant Chainfern (71)
Woodwardia fimbriata
Giant Helleborine (9)
Epipactis gigantea
Giant Woolstar (5)
Eriastrum densifolium
Glistening Inky Cap (21)
Coprinellus micaceus
Gold Poppy (5)
Eschscholzia caespitosa
Goldback Fern (28)
Pentagramma triangularis
Golden Currant (5)
Ribes aureum
Golden Eagle (5)
Aquila chrysaetos
Golden Ear-drops (83)
Ehrendorferia chrysantha
Golden-crowned Sparrow (9)
Zonotrichia atricapilla
Goodding's Willow (3)
Salix gooddingii
Gophersnake (68)
Pituophis catenifer
Gray Fox (7)
Urocyon cinereoargenteus
Great Blue Heron (3)
Ardea herodias
Great Brome (20)
Bromus diandrus
Great Horned Owl (4)
Bubo virginianus
Greata's Aster (24)
Symphyotrichum greatae
Green Lynx Spider (6)
Peucetia viridans
Green-tongue Liverwort (3)
Marchantia polymorpha
Greenleaf Manzanita (3)
Arctostaphylos patula
Grinnell's Beardtongue (94)
Penstemon grinnellii
Ground-ivy (53)
Glechoma hederacea
Gum Rock-rose (36)
Cistus ladanifer
Hairy Curtain Crust (68)
Stereum hirsutum
Hairy Whitethorn (94)
Ceanothus oliganthus
Hairy Willowherb (7)
Epilobium ciliatum
Hairy Woodpecker (4)
Leuconotopicus villosus
Hairy Yerba Santa (42)
Eriodictyon trichocalyx
Heartleaf Beardtongue (169)
Keckiella cordifolia
Heermann's Trefoil (4)
Acmispon tomentosus
Hermit Thrush (28)
Catharus guttatus
Hoary Buckwheat (32)
Eriogonum saxatile
Hoary Rock-rose (97)
Cistus creticus
Hoary-leaf Whitethorn (119)
Ceanothus crassifolius
Hollyleaf Cherry (87)
Prunus ilicifolia
Hollyleaf Redberry (73)
Rhamnus ilicifolia
Honey Fungus (7)
Armillaria mellea
House Finch (6)
Haemorhous mexicanus
Humboldt Lily (38)
Lilium humboldtii
Hummingbird-trumpet (107)
Epilobium canum
Hutton's Vireo (9)
Vireo huttoni
Imbricate Scorpionweed (6)
Phacelia imbricata
Incense Cedar (44)
Calocedrus decurrens
Indian-fig (37)
Opuntia ficus-indica
Interior Live Oak (71)
Quercus wislizeni
Italian Thistle (9)
Carduus pycnocephalus
Jordan's Maidenhair Fern (13)
Adiantum jordanii
June Mushroom (12)
Gymnopus dryophilus
Kaweah River Bush-monkeyflower (13)
Diplacus calycinus
Koch's Wolf Spider (6)
Alopecosa kochi
Ladder Brake (6)
Pteris vittata
Lanceleaf Live-forever (29)
Dudleya lanceolata
Large-flower Scorpionweed (40)
Phacelia grandiflora
Largeleaf Periwinkle (331)
Vinca major
Laurel Sumac (327)
Malosma laurina
Lawrence's Goldfinch (4)
Spinus lawrencei
Lazuli Bunting (7)
Passerina amoena
Leafy Fleabane (15)
Erigeron foliosus
Leather Oak (25)
Quercus durata
Lemmon's Catchfly (9)
Silene lemmonii
Lesser Goldfinch (25)
Spinus psaltria
Lewis's Woodpecker (4)
Melanerpes lewis
Lilac Mycena (3)
Mycena pura
Lindley's Lupine (7)
Lupinus bicolor
Long-stalked Phacelia (23)
Phacelia longipes
Longstem Buckwheat (30)
Eriogonum elongatum
Magpie Inky Cap (6)
Coprinopsis picacea
Mallard (4)
Anas platyrhynchos
Maltese Star-thistle (18)
Centaurea melitensis
Mediterranean Mustard (27)
Hirschfeldia incana
Menzies' Baby-blue-eyes (135)
Nemophila menziesii
Merriam's Chipmunk (22)
Neotamias merriami
Mexican Catchfly (79)
Silene laciniata
Miner's-lettuce (108)
Claytonia perfoliata
Mountain Chickadee (7)
Poecile gambeli
Mountain Quail (7)
Oreortyx pictus
Mountain-mahogany (221)
Cercocarpus betuloides
Mourning Dove (8)
Zenaida macroura
Mouse Barley (15)
Hordeum murinum
Mule Deer (122)
Odocoileus hemionus
Mule Fat Blister Mite (4)
Aceria baccharices
Munite Prickly-poppy (5)
Argemone munita
Narrowleaf Bedstraw (20)
Galium angustifolium
Narrowleaf Milkweed (15)
Asclepias fascicularis
Narrowleaf Swordfern (29)
Polystichum imbricans
Narrowleaf Willow (5)
Salix exigua
Nearby Ground Spider (5)
Herpyllus propinquus
Nevin's Brickell-bush (3)
Brickellia nevinii
Nipple-seed Plantain (4)
Plantago major
Noble False Widow (4)
Steatoda nobilis
Northern Flicker (14)
Colaptes auratus
Northern House Wren (18)
Troglodytes aedon
Northern Yellow Warbler (9)
Setophaga aestiva
Nuttall's Annual Lupine (21)
Lupinus truncatus
Nuttall's Woodpecker (16)
Dryobates nuttallii
Oak Titmouse (39)
Baeolophus inornatus
Oak-loving Elfin Saddle (5)
Helvella dryophila
Oceanspray (10)
Holodiscus discolor
Old-Man-in-the-Spring (3)
Senecio vulgaris
Orchard Grass (3)
Dactylis glomerata
Orobus-seed Liverwort (11)
Targionia hypophylla
Oyster Mushroom (7)
Pleurotus ostreatus
Pacific Harvestman (26)
Leuronychus pacificus
Pacific Trailing Blackberry (107)
Rubus ursinus
Pacific Treefrog (15)
Pseudacris regilla
Palmer's Mariposa Lily (5)
Calochortus palmeri
Palmer's asterella (16)
Asterellopsis palmeri
Parish's Goldenweed (55)
Ericameria parishii
Pauma Bush Lupine (5)
Lupinus longifolius
Petty Spurge (8)
Euphorbia peplus
Phainopepla (8)
Phainopepla nitens
Pin Clover (74)
Erodium cicutarium
Pine Green-gentian (10)
Frasera neglecta
Pineapple-weed Chamomile (4)
Matricaria discoidea
Pink Feather Boa Millipede (6)
Gosodesmus claremontus
Pipestem Virgin's-bower (32)
Clematis lasiantha
Plummer's Mariposa Lily (102)
Calochortus plummerae
Poison-hemlock (3)
Conium maculatum
Polished Willow (3)
Salix laevigata
Poodle-dog Bush (54)
Eriodictyon parryi
Prickly Lettuce (5)
Lactuca serriola
Prickly Phlox (142)
Linanthus californicus
Purple Finch (8)
Haemorhous purpureus
Purple Fuzz (5)
Punctularia atropurpurascens
Purple Nightshade (29)
Solanum xanti
Purple-and-white Blue-eyed Mary (39)
Collinsia heterophylla
Quick Gloss Snail (4)
Zonitoides arboreus
Raccoon (3)
Procyon lotor
Rainbow Trout or Steelhead (10)
Oncorhynchus mykiss
Red-crowned Amazon (6)
Amazona viridigenalis
Red-shouldered Hawk (3)
Buteo lineatus
Red-tailed Hawk (20)
Buteo jamaicensis
Ring-necked Snake (13)
Diadophis punctatus
Rose Clover (9)
Trifolium hirtum
Roundleaf Boykinia (26)
Boykinia rotundifolia
Rubber Rabbitbrush (5)
Ericameria nauseosa
Ruby-crowned Kinglet (7)
Corthylio calendula
Rufous-crowned Sparrow (12)
Aimophila ruficeps
Sacred Thorn-apple (7)
Datura wrightii
San Francisco Broomrape (25)
Aphyllon franciscanum
San Francisco Woodland-star (4)
Lithophragma affine
San Gabriel Chestnut (21)
Glyptostoma gabrielense
Santa Barbara Honeysuckle (41)
Lonicera subspicata
Sawfinger Scorpion (5)
Serradigitus gertschi
Sawtooth Bristleweed (11)
Hazardia squarrosa
Scarlet Bugler (149)
Penstemon centranthifolius
Scarlet Larkspur (93)
Delphinium cardinale
Scarlet Milkweed (3)
Asclepias curassavica
Scarlet Monkeyflower (178)
Erythranthe cardinalis
Sea Goldenstar (23)
Muilla maritima
Selloa Pampas Grass (5)
Cortaderia selloana
Shaggy Parasol (3)
Chlorophyllum brunneum
Short-lobe Scorpionweed (17)
Phacelia brachyloba
Showy Beardtongue (8)
Penstemon spectabilis
Sierra Gooseberry (6)
Ribes roezlii
Silver Bird's-foot-trefoil (4)
Acmispon argophyllus
Silver Garden Orbweaver (14)
Argiope argentata
Silver Maple (10)
Acer saccharinum
Small-flower Catchfly (4)
Silene gallica
Small-flower Indian-paintbrush (13)
Castilleja minor
Small-flower Meconella (3)
Meconella denticulata
Small-flower Stickleaf (5)
Mentzelia micrantha
Smilo Grass (11)
Oloptum miliaceum
Smooth Cat's-ear (4)
Hypochaeris glabra
Smooth Inky Cap (3)
Coprinopsis atramentaria
Soft Brome (4)
Bromus hordeaceus
Soft-haired Snowberry (3)
Symphoricarpos mollis
Song Sparrow (9)
Melospiza melodia
Sonoran Desert Centipede (6)
Scolopendra polymorpha
Southern Alligator Lizard (71)
Elgaria multicarinata
Southern Brassbuttons (5)
Cotula australis
Southern Bush-monkeyflower (108)
Diplacus longiflorus
Southern Maidenhair Fern (70)
Adiantum capillus-veneris
Southern Sagebrush Lizard (20)
Sceloporus vandenburgianus
Southern Shoulderband (6)
Helminthoglypta tudiculata
Southern Silktassel (25)
Garrya veatchii
Southern Tauschia (5)
Tauschia arguta
Spanish Broom (379)
Spartium junceum
Spearleaf False Dandelion (4)
Agoseris retrorsa
Splitgill (35)
Schizophyllum commune
Spotted Towhee (47)
Pipilo maculatus
Steindachner's Ebony Tarantula (10)
Aphonopelma steindachneri
Steller's Jay (102)
Cyanocitta stelleri
Sticky Thorough-wort (404)
Ageratina adenophora
Stiff Birds-beak (16)
Cordylanthus rigidus
Stinging Lupine (53)
Lupinus hirsutissimus
Stivers' Annual Lupine (4)
Lupinus stiversii
Stream Trefoil (5)
Hosackia oblongifolia
Strigose Trefoil (6)
Acmispon strigosus
Striped Racer (46)
Masticophis lateralis
Striped Skunk (12)
Mephitis mephitis
Suburban Psathyrella (15)
Candolleomyces candolleanus
Succulent Annual Lupine (3)
Lupinus succulentus
Sugar Pine (7)
Pinus lambertiana
Sugar Sumac (250)
Rhus ovata
Sulphur Tuft (4)
Hypholoma fasciculare
Superstition Mountains Scorpion (10)
Superstitionia donensis
Tawny Dwarf Tarantula (7)
Megahexura fulva
Telegraphweed (11)
Heterotheca grandiflora
Thevenet's Trapdoor Spider (5)
Hebestatis theveneti
Thickleaf Yerba Santa (377)
Eriodictyon crassifolium
Threadleaf Ragwort (16)
Senecio flaccidus
Three-nerve Goldenrod (13)
Solidago velutina
Tiger Whiptail (95)
Aspidoscelis tigris
Tongue Clarkia (17)
Clarkia rhomboidea
Townsend's Solitaire (4)
Myadestes townsendi
Toyon (163)
Heteromeles arbutifolia
Transverse Range Shoulderband (4)
Helminthoglypta petricola
Trask Shoulderband (24)
Helminthoglypta traskii
Treasure-flower (3)
Gazania linearis
Tree Poppy (284)
Dendromecon rigida
Tree Spurge (12)
Euphorbia dendroides
Tree Tobacco (172)
Nicotiana glauca
Tree-of-Heaven (3)
Ailanthus altissima
Tropical Parula (17)
Setophaga pitiayumi
Turkey Tail (60)
Trametes versicolor
Turkey Vulture (8)
Cathartes aura
Two-striped Gartersnake (33)
Thamnophis hammondii
Urn-flowered Alumroot (55)
Heuchera elegans
Versicolor Long-jawed Orbweaver (3)
Tetragnatha versicolor
Virgate Wire-lettuce (4)
Stephanomeria virgata
Wand Mullein (10)
Verbascum virgatum
Wavyleaf Indian-paintbrush (6)
Castilleja applegatei
Wavyleaf Soap-plant (6)
Chlorogalum pomeridianum
Wedge-leaf Goldenweed (4)
Ericameria cuneata
West Coast Orbweaver (6)
Araneus gemma
Western Bird's-foot-trefoil (65)
Acmispon glaber
Western Black Widow Spider (14)
Latrodectus hesperus
Western Black-headed Snake (5)
Tantilla planiceps
Western Bluebird (22)
Sialia mexicana
Western Fence Lizard (444)
Sceloporus occidentalis
Western Flycatcher (28)
Empidonax difficilis
Western Gray Squirrel (282)
Sciurus griseus
Western Poison-oak (471)
Toxicodendron diversilobum
Western Rattlesnake (169)
Crotalus oreganus
Western Skink (27)
Plestiodon skiltonianus
Western Swordfern (12)
Polystichum munitum
Western Tanager (22)
Piranga ludoviciana
Western Toad (4)
Anaxyrus boreas
Western Wallflower (60)
Erysimum capitatum
Western Wood-Pewee (12)
Contopus sordidulus
White Alder (251)
Alnus rhombifolia
White Brittlebush (3)
Encelia farinosa
White Sage (69)
Salvia apiana
White-breasted Nuthatch (42)
Sitta carolinensis
White-crowned Sparrow (17)
Zonotrichia leucophrys
White-flower Currant (36)
Ribes indecorum
White-footed Slime (10)
Diachea leucopodia
White-stem Heron's-bill (3)
Erodium moschatum
White-stem Raspberry (4)
Rubus leucodermis
White-throated Swift (4)
Aeronautes saxatalis
Wide-throat Yellow Monkeyflower (39)
Diplacus brevipes
Willowleaf False Willow (92)
Baccharis salicifolia
Wilson's Warbler (5)
Cardellina pusilla
Winecup Clarkia (6)
Clarkia purpurea
Witch's Butter (9)
Tremella mesenterica
Witches' Butter (6)
Exidia glandulosa
Withered Snapdragon (32)
Sairocarpus multiflorus
Woodland Pterostegia (11)
Pterostegia drymarioides
Woolly Bluecurls (3)
Trichostema lanatum
Woolly Indian-paintbrush (3)
Castilleja foliolosa
Wrentit (13)
Chamaea fasciata
Yellow Dung Mushroom (35)
Bolbitius titubans
Yellow Gardenslug (11)
Limacus flavus
Yellow Pincushion (6)
Chaenactis glabriuscula
Yellow Whispering-bells (16)
Emmenanthe penduliflora
Yellow-rumped Warbler (12)
Setophaga coronata
Yellow-yarrow (145)
Eriophyllum confertiflorum
Young Sporocarps (8)
Fuscoporia gilva
Zigzag Larkspur (11)
Delphinium patens
a centipede (15)
Scolopocryptops gracilis
a fungus (13)
Puccinia monoica
a fungus (14)
Psathyrella longipes
a fungus (4)
Psathyrella bipellis
a fungus (5)
Pluteus exilis
a fungus (5)
Peniophora albobadia
a fungus (16)
Omphalotus olivascens
a fungus (11)
Xerocomellus dryophilus
a fungus (31)
Marasmius plicatulus
a fungus (4)
Lactarius alnicola
a fungus (12)
Deconica montana
a fungus (4)
Chondrostereum purpureum
a fungus (4)
Ceriporia spissa
a liverwort (3)
Porella bolanderi
blue dicks (46)
Dipterostemon capitatus
chocolate tube slime (3)
Stemonitis splendens
orange bonnet (5)
Pruinomycena acicula
splendid woodland-gilia (11)
Saltugilia splendens
stork's-bill chytrid (6)
Synchytrium papillatum
sugar bush × lemonade berry hybrid (19)
Rhus integrifolia × ovata
Federally Listed Species (14)

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.

Arroyo Toad
Anaxyrus californicusEndangered
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
Western Spadefoot
Spea hammondiiProposed Threatened
Other Species of Concern (24)

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
Saltmarsh Common Yellowthroat
Geothlypis trichas sinuosa
Tricolored Blackbird
Agelaius tricolor
Western Grebe
Aechmophorus occidentalis
Western Gull
Larus occidentalis
Western Screech-Owl
Megascops kennicottii cardonensis
White-headed Woodpecker
Dryobates albolarvatus gravirostris
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (22)

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
Savannah Sparrow
Passerculus sandwichensis
Song Sparrow
Melospiza melodia
Spotted Owl
Strix occidentalis
Tricolored Blackbird
Agelaius tricolor
Western Grebe
Aechmophorus occidentalis
Western Gull
Larus occidentalis
Western Screech-Owl
Megascops kennicottii
Wrentit
Chamaea fasciata
Vegetation (7)

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

California Chaparral
Shrub / Shrubland · 786 ha
GNR41.3%
GNR37.3%
GNR3.9%
California Mixed Conifer Forest
Tree / Conifer · 51 ha
GNR2.7%
GNR2.4%
Southern California Coast Ranges Cliff and Canyon
Sparse / Sparsely Vegetated · 34 ha
1.8%

Arroyo Seco

Arroyo Seco Roadless Area

Angeles National Forest, California · 4,703 acres