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Bird List

Updated ~9 seconds ago
126 All Years 47 This Year 2024 28 This Month May 2024
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (126)

  1. Hooded Oriole Icterus cucullatus
    # Count: 1
    Date:
    Observer: Scott Bowers
    Location: Thornton SB
  2. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 1
    Date:
    Observer: Richard Bradus
    Location: Thornton SB
  3. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: Peter Williams
    Location: Thornton SB
  4. Ferruginous Hawk Buteo regalis
    # Count: 1
    Date:
    Observer: Dominik Mosur
    Location: Thornton SB
  5. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 1
    Date:
    Observer: Dominik Mosur
    Location: Thornton SB
  6. Western Bluebird Sialia mexicana
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  7. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  8. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  9. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  10. Forster's Tern Sterna forsteri
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  11. Nuttall's Woodpecker Dryobates nuttallii
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  12. Band-tailed Pigeon Patagioenas fasciata
    # Count: 30
    Date:
    Observer: Dominik Mosur
    Location: Thornton SB
  13. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Dominik Mosur
    Location: Thornton SB
  14. Iceland Gull Larus glaucoides
    # Count: 2
    Date:
    Observer: Tobias Rohmer
    Location: Thornton SB
  15. Killdeer Charadrius vociferus
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  16. White-tailed Kite Elanus leucurus
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  17. Lesser Goldfinch Spinus psaltria
    # Count: 11
    Date:
    Observer: Max Lara
    Location: Thornton SB
  18. American Coot Fulica americana
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  19. Barn Owl Tyto alba
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  20. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  21. Black Turnstone Arenaria melanocephala
    # Count: 6
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  22. Sooty Shearwater Ardenna grisea
    # Count: 200
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  23. Rhinoceros Auklet Cerorhinca monocerata
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  24. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  25. Pigeon Guillemot Cepphus columba
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  26. Bank Swallow Riparia riparia
    # Count: 5
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  27. Vaux's Swift Chaetura vauxi
    # Count: 1
    Date:
    Observer: Max Benningfield
    Location: Thornton SB
  28. Northern Fulmar Fulmarus glacialis
    # Count: 1
    Date:
    Observer: Crima Pogge
    Location: Thornton SB
  29. Canada Goose Branta canadensis
    # Count: 21
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  30. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  31. Parasitic Jaeger Stercorarius parasiticus
    # Count: 3
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  32. Hutton's Vireo Vireo huttoni
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  33. Red-breasted Nuthatch Sitta canadensis
    # Count: 3
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  34. Orange-crowned Warbler Leiothlypis celata
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  35. Least Sandpiper Calidris minutilla
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  36. Purple Finch Haemorhous purpureus
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  37. Red-necked Phalarope Phalaropus lobatus
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  38. Willet Tringa semipalmata
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  39. Western Flycatcher Empidonax difficilis
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  40. Common Yellowthroat Geothlypis trichas
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  41. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  42. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  43. Violet-green Swallow Tachycineta thalassina
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  44. Wilson's Warbler Cardellina pusilla
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  45. Ancient Murrelet Synthliboramphus antiquus
    # Count: 1
    Date:
    Observer: Ginny Marshall
    Location: Thornton SB
  46. Western Meadowlark Sturnella neglecta
    # Count: 4
    Date:
    Observer: Florian Olivier
    Location: Thornton SB
  47. Pygmy Nuthatch Sitta pygmaea
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  48. Dark-eyed Junco Junco hyemalis
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  49. Elegant Tern Thalasseus elegans
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  50. Pelagic Cormorant Urile pelagicus
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  51. Snowy Egret Egretta thula
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  52. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  53. House Sparrow Passer domesticus
    # Count: 1
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  54. Common Murre Uria aalge
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  55. Tree Swallow Tachycineta bicolor
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  56. Wrentit Chamaea fasciata
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  57. Bewick's Wren Thryomanes bewickii
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  58. Caspian Tern Hydroprogne caspia
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  59. Mallard Anas platyrhynchos
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  60. Allen's Hummingbird Selasphorus sasin
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  61. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  62. Barn Swallow Hirundo rustica
    # Count: 5
    Date:
    Observer: Max Lara
    Location: Thornton SB
  63. House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  64. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  65. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  66. Horned Grebe Podiceps auritus
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  67. Short-billed Gull Larus brachyrhynchus
    # Count: 5
    Date:
    Observer: Max Lara
    Location: Thornton SB
  68. Pacific Loon Gavia pacifica
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  69. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  70. Mourning Dove Zenaida macroura
    # Count: 3
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  71. Long-billed Curlew Numenius americanus
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  72. California Gull Larus californicus
    # Count: 5
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  73. Red-winged Blackbird Agelaius phoeniceus
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  74. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Lynn Schofield
    Location: Thornton SB
  75. Savannah Sparrow Passerculus sandwichensis
    # Count: 4
    Date:
    Observer: Lynn Schofield
    Location: Thornton SB
  76. Say's Phoebe Sayornis saya
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  77. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Clare Sugarman
    Location: Thornton SB
  78. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Ann Hep
    Location: Thornton SB
  79. White-winged Scoter Melanitta deglandi
    # Count: 11
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  80. Clark's Grebe Aechmophorus clarkii
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  81. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  82. Marbled Godwit Limosa fedoa
    # Count: 10
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  83. Sanderling Calidris alba
    # Count: 315
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  84. Herring Gull Larus argentatus
    # Count: 5
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  85. Glaucous-winged Gull Larus glaucescens
    # Count: 6
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  86. Red-throated Loon Gavia stellata
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  87. Red-tailed Hawk Buteo jamaicensis
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  88. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  89. Northern Flicker Colaptes auratus
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  90. Black Phoebe Sayornis nigricans
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  91. California Scrub-Jay Aphelocoma californica
    # Count: 4
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  92. Chestnut-backed Chickadee Poecile rufescens
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  93. Ruby-crowned Kinglet Corthylio calendula
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  94. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  95. American Robin Turdus migratorius
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  96. Fox Sparrow Passerella iliaca
    # Count: 5
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  97. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 7
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  98. Spotted Towhee Pipilo maculatus
    # Count: 2
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  99. Tricolored Blackbird Agelaius tricolor
    # Count: 26
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  100. Brown-headed Cowbird Molothrus ater
    # Count: 5
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  101. Yellow-rumped Warbler Setophaga coronata
    # Count: 4
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  102. Townsend's Warbler Setophaga townsendi
    # Count: 1
    Date:
    Observer: Russ Bright
    Location: Thornton SB
  103. Western Grebe Aechmophorus occidentalis
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  104. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  105. American Crow Corvus brachyrhynchos
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  106. Bushtit Psaltriparus minimus
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  107. Pacific Wren Troglodytes pacificus
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  108. Surf Scoter Melanitta perspicillata
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  109. Rock Pigeon Columba livia
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  110. European Starling Sturnus vulgaris
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  111. House Finch Haemorhous mexicanus
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  112. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  113. California Towhee Melozone crissalis
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  114. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  115. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  116. Anna's Hummingbird Calypte anna
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  117. Brandt's Cormorant Urile penicillatus
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  118. Common Raven Corvus corax
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  119. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 2
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  120. Western Sandpiper Calidris mauri
    # Count: 1
    Date:
    Observer: Robert Curry
    Location: Thornton SB
  121. Heermann's Gull Larus heermanni
    # Count: 1
    Date:
    Observer: Robert Curry
    Location: Thornton SB
  122. Western Gull Larus occidentalis
    # Count: 1
    Date:
    Observer: Robert Curry
    Location: Thornton SB
  123. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Robert Curry
    Location: Thornton SB
  124. Brown Pelican Pelecanus occidentalis
    # Count: 1
    Date:
    Observer: Robert Curry
    Location: Thornton SB
  125. Least Auklet Aethia pusilla
    # Count: 1
    Date:
    Observer: CBRC Review Species
    Location: Thornton SB
  126. Black Scoter Melanitta americana
    # Count: 11
    Date:
    Observer: Sequoia Audubon Data
    Location: Thornton SB

Hybrids (1)

  1. Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescens
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB

Additional Taxa (20)

  1. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Sam Talarigo
    Location: Thornton SB
  2. blackbird sp. Icteridae sp.
    # Count: 30
    Date:
    Observer: Sam Talarigo
    Location: Thornton SB
  3. tern sp. Sterninae sp.
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  4. Larus sp. Larus sp.
    # Count: 3
    Date:
    Observer: Sam Talarigo
    Location: Thornton SB
  5. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: Sam Talarigo
    Location: Thornton SB
  6. shorebird sp. Charadriiformes sp.
    # Count: 600
    Date:
    Observer: Crima Pogge
    Location: Thornton SB
  7. hummingbird sp. Trochilidae sp.
    # Count: 3
    Date:
    Observer: Becky Newman
    Location: Thornton SB
  8. duck sp. Anatidae (duck sp.)
    # Count: X
    Date:
    Observer: Rajan Rao
    Location: Thornton SB
  9. new world goldfinch sp. Spinus sp. (goldfinch sp.)
    # Count: 1
    Date:
    Observer: Jennifer Rycenga
    Location: Thornton SB
  10. Red/Red-necked Phalarope Phalaropus fulicarius/lobatus
    # Count: 1
    Date:
    Observer: Cédric Duhalde
    Location: Thornton SB
  11. grebe sp. Podicipedidae sp.
    # Count: 1
    Date:
    Observer: Crima Pogge
    Location: Thornton SB
  12. murrelet sp. Brachyramphus/Synthliboramphus sp.
    # Count: 2
    Date:
    Observer: Ginny Marshall
    Location: Thornton SB
  13. loon sp. Gavia sp.
    # Count: 8
    Date:
    Observer: Nico Stuurman
    Location: Thornton SB
  14. new world sparrow sp. Passerellidae sp.
    # Count: 5
    Date:
    Observer: Florian Olivier
    Location: Thornton SB
  15. cormorant sp. Phalacrocoracidae sp.
    # Count: 1
    Date:
    Observer: Megan Jankowski
    Location: Thornton SB
  16. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Max Lara
    Location: Thornton SB
  17. swallow sp. Hirundinidae sp.
    # Count: 2
    Date:
    Observer: Max Lara
    Location: Thornton SB
  18. scoter sp. Melanitta sp.
    # Count: 120
    Date:
    Observer: Ann Hep
    Location: Thornton SB
  19. gull sp. Larinae sp.
    # Count: 5
    Date:
    Observer: Ann Hep
    Location: Thornton SB
  20. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 16
    Date:
    Observer: Russ Bright
    Location: Thornton SB