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Bird List

Updated ~10 seconds ago
141 All Years 67 This Year 2024 6 This Month Jun 2024
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (141)

  1. Gadwall Mareca strepera
    # Count: 3
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  2. Mallard Anas platyrhynchos
    # Count: X
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  3. Ruddy Duck Oxyura jamaicensis
    # Count: 1
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  4. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  5. Barn Swallow Hirundo rustica
    # Count: 2
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  6. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Aidan Sinha
    Location: Mayfield Slough
  7. Canada Goose Branta canadensis
    # Count: 9
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  8. Anna's Hummingbird Calypte anna
    # Count: 1
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  9. Snowy Egret Egretta thula
    # Count: 6
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  10. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  11. American Crow Corvus brachyrhynchos
    # Count: 2
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  12. Song Sparrow Melospiza melodia
    # Count: 2
    Date:
    Observer: mel chen
    Location: Mayfield Slough
  13. Cinnamon Teal Spatula cyanoptera
    # Count: 5
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  14. Northern Shoveler Spatula clypeata
    # Count: 100
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  15. American Wigeon Mareca americana
    # Count: 7
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  16. Northern Pintail Anas acuta
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  17. Green-winged Teal Anas crecca
    # Count: 14
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  18. Bufflehead Bucephala albeola
    # Count: 5
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  19. American Coot Fulica americana
    # Count: 30
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  20. American Avocet Recurvirostra americana
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  21. Killdeer Charadrius vociferus
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  22. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 21
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  23. California Gull Larus californicus
    # Count: X
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  24. Forster's Tern Sterna forsteri
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  25. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  26. Great Egret Ardea alba
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  27. Turkey Vulture Cathartes aura
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  28. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  29. Violet-green Swallow Tachycineta thalassina
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  30. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  31. Bewick's Wren Thryomanes bewickii
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  32. Northern Mockingbird Mimus polyglottos
    # Count: 5
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  33. House Finch Haemorhous mexicanus
    # Count: 4
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  34. Lesser Goldfinch Spinus psaltria
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  35. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 10
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  36. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  37. Red-winged Blackbird Agelaius phoeniceus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  38. Common Yellowthroat Geothlypis trichas
    # Count: 7
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  39. Canvasback Aythya valisineria
    # Count: 34
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  40. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  41. Least Sandpiper Calidris minutilla
    # Count: X
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  42. American White Pelican Pelecanus erythrorhynchos
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  43. White-tailed Kite Elanus leucurus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  44. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  45. Black Phoebe Sayornis nigricans
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  46. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  47. Yellow-rumped Warbler Setophaga coronata
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  48. Greater Scaup Aythya marila
    # Count: 3
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  49. Lesser Scaup Aythya affinis
    # Count: 5
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  50. Surf Scoter Melanitta perspicillata
    # Count: 1
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  51. Marbled Godwit Limosa fedoa
    # Count: 6
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  52. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  53. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Patricia Lynch
    Location: Mayfield Slough
  54. American Pipit Anthus rubescens
    # Count: 2
    Date:
    Observer: Patricia Lynch
    Location: Mayfield Slough
  55. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Patricia Lynch
    Location: Mayfield Slough
  56. Western Meadowlark Sturnella neglecta
    # Count: 3
    Date:
    Observer: Patricia Lynch
    Location: Mayfield Slough
  57. Eurasian Wigeon Mareca penelope
    # Count: 1
    Date:
    Observer: Romain Demarly
    Location: Mayfield Slough
  58. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: Romain Demarly
    Location: Mayfield Slough
  59. Common Goldeneye Bucephala clangula
    # Count: 10
    Date:
    Observer: Jim Anderson
    Location: Mayfield Slough
  60. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  61. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  62. Say's Phoebe Sayornis saya
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  63. California Towhee Melozone crissalis
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  64. Redhead Aythya americana
    # Count: 14
    Date:
    Observer: Kate Kremling
    Location: Mayfield Slough
  65. Western Grebe Aechmophorus occidentalis
    # Count: 1
    Date:
    Observer: Kate Kremling
    Location: Mayfield Slough
  66. Western Sandpiper Calidris mauri
    # Count: 28
    Date:
    Observer: Kate Kremling
    Location: Mayfield Slough
  67. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Kate Kremling
    Location: Mayfield Slough
  68. Mourning Dove Zenaida macroura
    # Count: 5
    Date:
    Observer: Michael McMaster
    Location: Mayfield Slough
  69. Black-necked Stilt Himantopus mexicanus
    # Count: 10
    Date:
    Observer: Michael McMaster
    Location: Mayfield Slough
  70. Ring-billed Gull Larus delawarensis
    # Count: 60
    Date:
    Observer: Michael McMaster
    Location: Mayfield Slough
  71. Long-billed Curlew Numenius americanus
    # Count: 1
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  72. Dunlin Calidris alpina
    # Count: 7
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  73. Herring Gull Larus argentatus
    # Count: 3
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  74. Glaucous-winged Gull Larus glaucescens
    # Count: 1
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  75. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  76. Belted Kingfisher Megaceryle alcyon
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  77. Brown Pelican Pelecanus occidentalis
    # Count: 47
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  78. Black-bellied Plover Pluvialis squatarola
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Mayfield Slough
  79. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Mayfield Slough
  80. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Mayfield Slough
  81. Willet Tringa semipalmata
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  82. Greater Yellowlegs Tringa melanoleuca
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  83. Hooded Oriole Icterus cucullatus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  84. Tree Swallow Tachycineta bicolor
    # Count: X
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  85. Rock Pigeon Columba livia
    # Count: 4
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  86. European Starling Sturnus vulgaris
    # Count: X
    Date:
    Observer: Laura Hyatt
    Location: Mayfield Slough
  87. Black Tern Chlidonias niger
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Mayfield Slough
  88. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Mayfield Slough
  89. Bullock's Oriole Icterus bullockii
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Mayfield Slough
  90. Brown-headed Cowbird Molothrus ater
    # Count: 3
    Date:
    Observer: Steve Rottenborn
    Location: Mayfield Slough
  91. Bushtit Psaltriparus minimus
    # Count: 4
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  92. Western Kingbird Tyrannus verticalis
    # Count: 4
    Date:
    Observer: Dylan Foust
    Location: Mayfield Slough
  93. Ring-necked Duck Aythya collaris
    # Count: 2
    Date:
    Observer: Robert Zanardelli
    Location: Mayfield Slough
  94. Semipalmated Plover Charadrius semipalmatus
    # Count: X
    Date:
    Observer: Larry Horkman
    Location: Mayfield Slough
  95. Cackling Goose Branta hutchinsii
    # Count: 1
    Date:
    Observer: Eve Meier
    Location: Mayfield Slough
  96. Clark's Grebe Aechmophorus clarkii
    # Count: 3
    Date:
    Observer: Heather Anderson
    Location: Mayfield Slough
  97. Snow Goose Anser caerulescens
    # Count: 4
    Date:
    Observer: Michael Y
    Location: Mayfield Slough
  98. Greater White-fronted Goose Anser albifrons
    # Count: 8
    Date:
    Observer: Michael Y
    Location: Mayfield Slough
  99. Burrowing Owl Athene cunicularia
    # Count: 1
    Date:
    Observer: Amanda Newlove
    Location: Mayfield Slough
  100. Blue-winged Teal Spatula discors
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  101. Western Bluebird Sialia mexicana
    # Count: 3
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  102. Ridgway's Rail Rallus obsoletus
    # Count: 4
    Date:
    Observer: Tricia Gardner
    Location: Mayfield Slough
  103. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Tricia Gardner
    Location: Mayfield Slough
  104. Black Skimmer Rynchops niger
    # Count: 1
    Date:
    Observer: Tricia Gardner
    Location: Mayfield Slough
  105. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Tricia Gardner
    Location: Mayfield Slough
  106. Western Gull Larus occidentalis
    # Count: X
    Date:
    Observer: Ann Hep
    Location: Mayfield Slough
  107. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Michael Y
    Location: Mayfield Slough
  108. Ross's Goose Anser rossii
    # Count: 1
    Date:
    Observer: My-Lan Le
    Location: Mayfield Slough
  109. Horned Grebe Podiceps auritus
    # Count: 4
    Date:
    Observer: My-Lan Le
    Location: Mayfield Slough
  110. Cooper's Hawk Accipiter cooperii
    # Count: 2
    Date:
    Observer: Robert Zanardelli
    Location: Mayfield Slough
  111. Green Heron Butorides virescens
    # Count: 2
    Date:
    Observer: Elena Scott
    Location: Mayfield Slough
  112. Purple Finch Haemorhous purpureus
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  113. Fox Sparrow Passerella iliaca
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  114. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: Lynn Maya
    Location: Mayfield Slough
  115. Lesser Yellowlegs Tringa flavipes
    # Count: 5
    Date:
    Observer: Lynn Maya
    Location: Mayfield Slough
  116. Short-billed Dowitcher Limnodromus griseus
    # Count: X
    Date:
    Observer: Benjamin Fick
    Location: Mayfield Slough
  117. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  118. Eared Grebe Podiceps nigricollis
    # Count: 3
    Date:
    Observer: Joachim Gonzalez
    Location: Mayfield Slough
  119. Iceland Gull Larus glaucoides
    # Count: 1
    Date:
    Observer: Joachim Gonzalez
    Location: Mayfield Slough
  120. Short-eared Owl Asio flammeus
    # Count: 1
    Date:
    Observer: Gordon Rydquist
    Location: Mayfield Slough
  121. Barn Owl Tyto alba
    # Count: 1
    Date:
    Observer: Jim Dehnert
    Location: Mayfield Slough
  122. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: Eve Meier
    Location: Mayfield Slough
  123. Dark-eyed Junco Junco hyemalis
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  124. Chestnut-backed Chickadee Poecile rufescens
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  125. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  126. Virginia Rail Rallus limicola
    # Count: 2
    Date:
    Observer: Jason Chou
    Location: Mayfield Slough
  127. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 1
    Date:
    Observer: Jason Chou
    Location: Mayfield Slough
  128. Wilson's Phalarope Phalaropus tricolor
    # Count: 2
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  129. Red-necked Phalarope Phalaropus lobatus
    # Count: 6
    Date:
    Observer: Gregory Ball
    Location: Mayfield Slough
  130. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Mayfield Slough
  131. California Scrub-Jay Aphelocoma californica
    # Count: 2
    Date:
    Observer: Bill Pelletier
    Location: Mayfield Slough
  132. House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: Daniel Bump
    Location: Mayfield Slough
  133. American Robin Turdus migratorius
    # Count: 3
    Date:
    Observer: Allison Anholt
    Location: Mayfield Slough
  134. Prairie Falcon Falco mexicanus
    # Count: 1
    Date:
    Observer: Caroline Lambert
    Location: Mayfield Slough
  135. Lapland Longspur Calcarius lapponicus
    # Count: 1
    Date:
    Observer: Caroline Lambert
    Location: Mayfield Slough
  136. Wilson's Snipe Gallinago delicata
    # Count: 1
    Date:
    Observer: Francis Joyce
    Location: Mayfield Slough
  137. Yellow Warbler Setophaga petechia
    # Count: 6
    Date:
    Observer: Jasen Liu
    Location: Mayfield Slough
  138. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 1
    Date:
    Observer: Kelly Krechmer
    Location: Mayfield Slough
  139. Barrow's Goldeneye Bucephala islandica
    # Count: 2
    Date:
    Observer: Joyce Sziebert
    Location: Mayfield Slough
  140. Hooded Merganser Lophodytes cucullatus
    # Count: X
    Date:
    Observer: Eric Goodill
    Location: Mayfield Slough
  141. Brandt's Cormorant Urile penicillatus
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Mayfield Slough

Additional Taxa (13)

  1. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 10
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  2. gull sp. Larinae sp.
    # Count: 50
    Date:
    Observer: Sergey Pavlov
    Location: Mayfield Slough
  3. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 1
    Date:
    Observer: Tricia Gardner
    Location: Mayfield Slough
  4. swallow sp. Hirundinidae sp.
    # Count: X
    Date:
    Observer: Dylan Foust
    Location: Mayfield Slough
  5. hummingbird sp. Trochilidae sp.
    # Count: X
    Date:
    Observer: Leonard Tramiel
    Location: Mayfield Slough
  6. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 2
    Date:
    Observer: M K
    Location: Mayfield Slough
  7. new world sparrow sp. Passerellidae sp.
    # Count: 5
    Date:
    Observer: Alina Goh
    Location: Mayfield Slough
  8. Zonotrichia sp. Zonotrichia sp.
    # Count: 20
    Date:
    Observer: Caitlin Chock
    Location: Mayfield Slough
  9. peep sp. Calidris sp. (peep sp.)
    # Count: 3
    Date:
    Observer: Jason Chou
    Location: Mayfield Slough
  10. Larus sp. Larus sp.
    # Count: 80
    Date:
    Observer: Jason Chou
    Location: Mayfield Slough
  11. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Jason Chou
    Location: Mayfield Slough
  12. Tree/Violet-green Swallow Tachycineta bicolor/thalassina
    # Count: 10
    Date:
    Observer: Allison Anholt
    Location: Mayfield Slough
  13. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 2
    Date:
    Observer: Kitty Anderson
    Location: Mayfield Slough