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Bird List

Updated ~12 seconds ago
176 All Years 101 This Year 2024 17 This Month Jun 2024
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (176)

  1. Mallard Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  2. Mourning Dove Zenaida macroura
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  3. California Gull Larus californicus
    # Count: 10
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  4. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  5. Forster's Tern Sterna forsteri
    # Count: 3
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  6. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  7. Barn Swallow Hirundo rustica
    # Count: 3
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  8. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 100
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  9. Bushtit Psaltriparus minimus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  10. Marsh Wren Cistothorus palustris
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  11. Northern Mockingbird Mimus polyglottos
    # Count: 3
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  12. House Sparrow Passer domesticus
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  13. House Finch Haemorhous mexicanus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  14. Song Sparrow Melospiza melodia
    # Count: 4
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  15. California Towhee Melozone crissalis
    # Count: 3
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  16. Brown-headed Cowbird Molothrus ater
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  17. Common Yellowthroat Geothlypis trichas
    # Count: 4
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  18. Canada Goose Branta canadensis
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  19. Gadwall Mareca strepera
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  20. Ruddy Duck Oxyura jamaicensis
    # Count: 15
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  21. Anna's Hummingbird Calypte anna
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  22. Willet Tringa semipalmata
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  23. Brandt's Cormorant Urile penicillatus
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  24. Double-crested Cormorant Nannopterum auritum
    # Count: 15
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  25. Snowy Egret Egretta thula
    # Count: 4
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  26. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  27. Turkey Vulture Cathartes aura
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  28. Black Phoebe Sayornis nigricans
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  29. Lesser Goldfinch Spinus psaltria
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  30. Rock Pigeon Columba livia
    # Count: 5
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  31. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 2
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  32. Black-necked Stilt Himantopus mexicanus
    # Count: 6
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  33. American Avocet Recurvirostra americana
    # Count: 1
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  34. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 7
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  35. Ring-billed Gull Larus delawarensis
    # Count: 5
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  36. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  37. European Starling Sturnus vulgaris
    # Count: 3
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  38. Red-winged Blackbird Agelaius phoeniceus
    # Count: 1
    Date:
    Observer: Neil Simpson
    Location: Alviso Slough
  39. Killdeer Charadrius vociferus
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  40. Bewick's Wren Thryomanes bewickii
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  41. Hooded Oriole Icterus cucullatus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  42. Dunlin Calidris alpina
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  43. Least Sandpiper Calidris minutilla
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  44. Western Sandpiper Calidris mauri
    # Count: 30
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  45. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  46. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  47. Wilson's Warbler Cardellina pusilla
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  48. Lesser Scaup Aythya affinis
    # Count: 6
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  49. White-throated Swift Aeronautes saxatalis
    # Count: 1
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  50. Greater Scaup Aythya marila
    # Count: 2
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  51. Western Grebe Aechmophorus occidentalis
    # Count: 1
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  52. American Coot Fulica americana
    # Count: 86
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  53. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  54. Herring Gull Larus argentatus
    # Count: 1
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  55. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  56. Western Kingbird Tyrannus verticalis
    # Count: 1
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  57. Violet-green Swallow Tachycineta thalassina
    # Count: 4
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  58. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 6
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  59. Savannah Sparrow Passerculus sandwichensis
    # Count: 6
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  60. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 3
    Date:
    Observer: Debra Johnson
    Location: Alviso Slough
  61. Common Goldeneye Bucephala clangula
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  62. Greater Yellowlegs Tringa melanoleuca
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  63. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  64. Western Bluebird Sialia mexicana
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  65. Bufflehead Bucephala albeola
    # Count: 8
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  66. American Wigeon Mareca americana
    # Count: 4
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  67. Redhead Aythya americana
    # Count: 2
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  68. Clark's Grebe Aechmophorus clarkii
    # Count: 1
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  69. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 11
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  70. Short-billed Gull Larus brachyrhynchus
    # Count: 4
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  71. Western Gull Larus occidentalis
    # Count: 1
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  72. Glaucous-winged Gull Larus glaucescens
    # Count: 5
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  73. American White Pelican Pelecanus erythrorhynchos
    # Count: 2
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  74. Northern Harrier Circus hudsonius
    # Count: 2
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  75. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  76. California Scrub-Jay Aphelocoma californica
    # Count: 2
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  77. American Pipit Anthus rubescens
    # Count: 2
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  78. Say's Phoebe Sayornis saya
    # Count: 1
    Date:
    Observer: Monica P
    Location: Alviso Slough
  79. Western Meadowlark Sturnella neglecta
    # Count: 5
    Date:
    Observer: Monica P
    Location: Alviso Slough
  80. Yellow-rumped Warbler Setophaga coronata
    # Count: 1
    Date:
    Observer: Monica P
    Location: Alviso Slough
  81. Cackling Goose Branta hutchinsii
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  82. Canvasback Aythya valisineria
    # Count: 2
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  83. Pied-billed Grebe Podilymbus podiceps
    # Count: 3
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  84. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  85. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  86. Barrow's Goldeneye Bucephala islandica
    # Count: 1
    Date:
    Observer: Chris Kennelly
    Location: Alviso Slough
  87. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  88. Red-breasted Merganser Mergus serrator
    # Count: 2
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  89. Virginia Rail Rallus limicola
    # Count: 1
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  90. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  91. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  92. Tree Swallow Tachycineta bicolor
    # Count: 2
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  93. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Tim Hoo
    Location: Alviso Slough
  94. Northern Shoveler Spatula clypeata
    # Count: 2
    Date:
    Observer: Susan Weinstein
    Location: Alviso Slough
  95. Green-winged Teal Anas crecca
    # Count: 1
    Date:
    Observer: Susan Weinstein
    Location: Alviso Slough
  96. Surf Scoter Melanitta perspicillata
    # Count: 4
    Date:
    Observer: Matthew Dodder
    Location: Alviso Slough
  97. Eared Grebe Podiceps nigricollis
    # Count: 2
    Date:
    Observer: Matthew Dodder
    Location: Alviso Slough
  98. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Matthew Dodder
    Location: Alviso Slough
  99. Horned Grebe Podiceps auritus
    # Count: 1
    Date:
    Observer: Brooke Miller
    Location: Alviso Slough
  100. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Leo ONeill
    Location: Alviso Slough
  101. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Leo ONeill
    Location: Alviso Slough
  102. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Alviso Slough
  103. Brown Pelican Pelecanus occidentalis
    # Count: 80
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  104. House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  105. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  106. Ridgway's Rail Rallus obsoletus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  107. Semipalmated Plover Charadrius semipalmatus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  108. Black-bellied Plover Pluvialis squatarola
    # Count: 2
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  109. Elegant Tern Thalasseus elegans
    # Count: 1
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  110. Nuttall's Woodpecker Dryobates nuttallii
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  111. Pine Siskin Spinus pinus
    # Count: 1
    Date:
    Observer: Michael Rogers
    Location: Alviso Slough
  112. Western Flycatcher Empidonax difficilis
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  113. Common Gallinule Gallinula galeata
    # Count: 1
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  114. Chestnut-backed Chickadee Poecile rufescens
    # Count: 3
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  115. Dark-eyed Junco Junco hyemalis
    # Count: 3
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  116. Vaux's Swift Chaetura vauxi
    # Count: 30
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  117. White-breasted Nuthatch Sitta carolinensis
    # Count: 1
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  118. Least Tern Sternula antillarum
    # Count: 1
    Date:
    Observer: Howard Friedman
    Location: Alviso Slough
  119. Long-billed Curlew Numenius americanus
    # Count: 40
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  120. Marbled Godwit Limosa fedoa
    # Count: 10
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  121. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  122. Lesser Yellowlegs Tringa flavipes
    # Count: 1
    Date:
    Observer: Leo ONeill
    Location: Alviso Slough
  123. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Alviso Slough
  124. American Robin Turdus migratorius
    # Count: 2
    Date:
    Observer: Patricia Lynch
    Location: Alviso Slough
  125. Cinnamon Teal Spatula cyanoptera
    # Count: 2
    Date:
    Observer: Heather Anderson
    Location: Alviso Slough
  126. White-tailed Kite Elanus leucurus
    # Count: 1
    Date:
    Observer: Travis B. Poitras
    Location: Alviso Slough
  127. Fox Sparrow Passerella iliaca
    # Count: 2
    Date:
    Observer: Patricia Lynch
    Location: Alviso Slough
  128. Ring-necked Duck Aythya collaris
    # Count: 2
    Date:
    Observer: Bob Bolles
    Location: Alviso Slough
  129. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  130. Sabine's Gull Xema sabini
    # Count: 1
    Date:
    Observer: Susan Weinstein
    Location: Alviso Slough
  131. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  132. Common Murre Uria aalge
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  133. Black Turnstone Arenaria melanocephala
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  134. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: Mike Ambrose
    Location: Alviso Slough
  135. Red-necked Phalarope Phalaropus lobatus
    # Count: 2
    Date:
    Observer: Andy N
    Location: Alviso Slough
  136. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Naresh Satyan
    Location: Alviso Slough
  137. Wilson's Snipe Gallinago delicata
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  138. Iceland Gull Larus glaucoides
    # Count: 2
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  139. Great-tailed Grackle Quiscalus mexicanus
    # Count: 27
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  140. Northern Flicker Colaptes auratus
    # Count: 2
    Date:
    Observer: Marcia Wolff
    Location: Alviso Slough
  141. Bank Swallow Riparia riparia
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Alviso Slough
  142. Barn Owl Tyto alba
    # Count: 1
    Date:
    Observer: Brad Speno
    Location: Alviso Slough
  143. Short-eared Owl Asio flammeus
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  144. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  145. Cedar Waxwing Bombycilla cedrorum
    # Count: 10
    Date:
    Observer: Girish Kulkarni
    Location: Alviso Slough
  146. Red-necked Grebe Podiceps grisegena
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Alviso Slough
  147. Purple Finch Haemorhous purpureus
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  148. Blue-winged Teal Spatula discors
    # Count: 1
    Date:
    Observer: Garrett Lau
    Location: Alviso Slough
  149. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Travis B. Poitras
    Location: Alviso Slough
  150. Short-billed Dowitcher Limnodromus griseus
    # Count: 4
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  151. Golden Eagle Aquila chrysaetos
    # Count: 1
    Date:
    Observer: Bruce Neill
    Location: Alviso Slough
  152. California Quail Callipepla californica
    # Count: 1
    Date:
    Observer: Naomi Goodman
    Location: Alviso Slough
  153. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  154. Common Merganser Mergus merganser
    # Count: 4
    Date:
    Observer: Tricia Gardner
    Location: Alviso Slough
  155. Wilson's Phalarope Phalaropus tricolor
    # Count: 22
    Date:
    Observer: Aaron Maizlish
    Location: Alviso Slough
  156. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  157. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Steve Tucker
    Location: Alviso Slough
  158. Bullock's Oriole Icterus bullockii
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  159. Tricolored Blackbird Agelaius tricolor
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  160. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Ray Birder
    Location: Alviso Slough
  161. Oak Titmouse Baeolophus inornatus
    # Count: 1
    Date:
    Observer: Bill Pelletier
    Location: Alviso Slough
  162. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 2
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  163. Orange-crowned Warbler Leiothlypis celata
    # Count: 1
    Date:
    Observer: Marjorie Keefe
    Location: Alviso Slough
  164. Townsend's Warbler Setophaga townsendi
    # Count: 1
    Date:
    Observer: LaRita Desimpel
    Location: Alviso Slough
  165. Snowy Plover Anarhynchus nivosus
    # Count: 1
    Date:
    Observer: Bruce Barrett
    Location: Alviso Slough
  166. Northern Pintail Anas acuta
    # Count: 6
    Date:
    Observer: Ed Vigezzi
    Location: Alviso Slough
  167. Spotted Towhee Pipilo maculatus
    # Count: 1
    Date:
    Observer: Elaine Vokoun
    Location: Alviso Slough
  168. American Bittern Botaurus lentiginosus
    # Count: 1
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  169. Red-throated Loon Gavia stellata
    # Count: 2
    Date:
    Observer: Steve Rottenborn
    Location: Alviso Slough
  170. Ruff Calidris pugnax
    # Count: 1
    Date:
    Observer: Melanie Self
    Location: Alviso Slough
  171. Loggerhead Shrike Lanius ludovicianus
    # Count: X
    Date:
    Observer: Melanie Self
    Location: Alviso Slough
  172. Sanderling Calidris alba
    # Count: 13
    Date:
    Observer: Ken Schneider
    Location: Alviso Slough
  173. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Peri Ann Taylor
    Location: Alviso Slough
  174. Black Skimmer Rynchops niger
    # Count: X
    Date:
    Observer: Becky Lomax
    Location: Alviso Slough
  175. Burrowing Owl Athene cunicularia
    # Count: X
    Date:
    Observer: Becky Lomax
    Location: Alviso Slough
  176. Glaucous Gull Larus hyperboreus
    # Count: X
    Date:
    Observer: Joelle Buffa Clyde Morris
    Location: Alviso Slough

Exotic: Escapee (1)

  1. Indian Peafowl Pavo cristatus
    # Count: 1
    Date:
    Observer: John Koon
    Location: Alviso Slough

Hybrids (3)

  1. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    # Count: 1
    Date:
    Observer: Barry Langdon-Lassagne
    Location: Alviso Slough
  2. Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandica
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  3. Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescens
    # Count: 1
    Date:
    Observer: Sergey Pavlov
    Location: Alviso Slough

Additional Taxa (22)

  1. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 2
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  2. gull sp. Larinae sp.
    # Count: 150
    Date:
    Observer: Zach Weinstein
    Location: Alviso Slough
  3. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 30
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  4. duck sp. Anatidae (duck sp.)
    # Count: 100
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  5. Calidris sp. Calidris sp.
    # Count: 1000
    Date:
    Observer: Melanie Barnett
    Location: Alviso Slough
  6. peep sp. Calidris sp. (peep sp.)
    # Count: 25
    Date:
    Observer: Noah Eckman
    Location: Alviso Slough
  7. new world sparrow sp. Passerellidae sp.
    # Count: 5
    Date:
    Observer: Chris Kennelly
    Location: Alviso Slough
  8. Common/Barrow's Goldeneye Bucephala clangula/islandica
    # Count: 2
    Date:
    Observer: Chris Overington
    Location: Alviso Slough
  9. Tree/Violet-green Swallow Tachycineta bicolor/thalassina
    # Count: 2
    Date:
    Observer: Garrett Lau
    Location: Alviso Slough
  10. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 1
    Date:
    Observer: Richard Jeffers
    Location: Alviso Slough
  11. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 1
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  12. swallow sp. Hirundinidae sp.
    # Count: 20
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  13. Zonotrichia sp. Zonotrichia sp.
    # Count: 6
    Date:
    Observer: Michael Long
    Location: Alviso Slough
  14. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 2
    Date:
    Observer: Girish Kulkarni
    Location: Alviso Slough
  15. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    # Count: X
    Date:
    Observer: Susan Weinstein
    Location: Alviso Slough
  16. hummingbird sp. Trochilidae sp.
    # Count: 2
    Date:
    Observer: Naresh Satyan
    Location: Alviso Slough
  17. Larus sp. Larus sp.
    # Count: 300
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  18. golden-plover sp. Pluvialis dominica/apricaria/fulva
    # Count: 1
    Date:
    Observer: Monica P
    Location: Alviso Slough
  19. blackbird sp. Icteridae sp.
    # Count: 1
    Date:
    Observer: Mike Danzenbaker
    Location: Alviso Slough
  20. new world oriole sp. Icterus sp.
    # Count: 2
    Date:
    Observer: Alex Tey
    Location: Alviso Slough
  21. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Stephen Long
    Location: Alviso Slough
  22. passerine sp. Passeriformes sp.
    # Count: X
    Date:
    Observer: Lynda Brothers
    Location: Alviso Slough