Menu
The Cornell Lab
The Cornell Lab

The Cornell Lab of Ornithology builds the eBird global platform for communities and partners around the world to advance data-driven science, education, and conservation.

Change Region

Change Region

Bethel Island--Piper Slough (private)

Directions Map

Explore...

Bird List

Updated ~7 seconds ago
219 All Years 138 This Year 2024 0 This Month Jun 2024
Last Observed First Observed High Count

Custom Time Period

Change Time Period

Sort by

  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (218)

  1. Mallard Anas platyrhynchos
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  2. California Quail Callipepla californica
    # Count: 5
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  3. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  4. Mourning Dove Zenaida macroura
    # Count: 5
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  5. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  6. Snowy Egret Egretta thula
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  7. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  8. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  9. Swainson's Hawk Buteo swainsoni
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  10. Red-tailed Hawk Buteo jamaicensis
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  11. Nuttall's Woodpecker Dryobates nuttallii
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  12. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  13. Black Phoebe Sayornis nigricans
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  14. Western Kingbird Tyrannus verticalis
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  15. California Scrub-Jay Aphelocoma californica
    # Count: 3
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  16. American Crow Corvus brachyrhynchos
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  17. Barn Swallow Hirundo rustica
    # Count: 8
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  18. Cliff Swallow Petrochelidon pyrrhonota
    # Count: X
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  19. Bushtit Psaltriparus minimus
    # Count: X
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  20. House Wren Troglodytes aedon
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  21. Marsh Wren Cistothorus palustris
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  22. European Starling Sturnus vulgaris
    # Count: X
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  23. Northern Mockingbird Mimus polyglottos
    # Count: 3
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  24. Western Bluebird Sialia mexicana
    # Count: 3
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  25. American Robin Turdus migratorius
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  26. House Finch Haemorhous mexicanus
    # Count: X
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  27. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  28. Spotted Towhee Pipilo maculatus
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  29. Hooded Oriole Icterus cucullatus
    # Count: 1
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  30. Bullock's Oriole Icterus bullockii
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  31. Red-winged Blackbird Agelaius phoeniceus
    # Count: 5
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  32. Brown-headed Cowbird Molothrus ater
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  33. Western Tanager Piranga ludoviciana
    # Count: 2
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  34. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 3
    Date:
    Observer: Matt Tarlach
    Location: Bethel Island--Piper Slough (private)
  35. Ring-necked Pheasant Phasianus colchicus
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  36. Rock Pigeon Columba livia
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  37. Black Swift Cypseloides niger
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  38. Vaux's Swift Chaetura vauxi
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  39. Black-chinned Hummingbird Archilochus alexandri
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  40. Anna's Hummingbird Calypte anna
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  41. American Coot Fulica americana
    # Count: 8
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  42. American Avocet Recurvirostra americana
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  43. Killdeer Charadrius vociferus
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  44. Semipalmated Plover Charadrius semipalmatus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  45. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  46. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 120
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  47. Red-necked Phalarope Phalaropus lobatus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  48. Dunlin Calidris alpina
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  49. Western Sandpiper Calidris mauri
    # Count: 30
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  50. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 30
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  51. California Gull Larus californicus
    # Count: 5
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  52. Caspian Tern Hydroprogne caspia
    # Count: 20
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  53. Forster's Tern Sterna forsteri
    # Count: 12
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  54. Green Heron Butorides virescens
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  55. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  56. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  57. Northern Harrier Circus hudsonius
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  58. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  59. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  60. American Kestrel Falco sparverius
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  61. Western Flycatcher Empidonax difficilis
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  62. Ash-throated Flycatcher Myiarchus cinerascens
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  63. Warbling Vireo Vireo gilvus
    # Count: 8
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  64. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  65. Tree Swallow Tachycineta bicolor
    # Count: 50
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  66. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  67. Bewick's Wren Thryomanes bewickii
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  68. Swainson's Thrush Catharus ustulatus
    # Count: 7
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  69. Cedar Waxwing Bombycilla cedrorum
    # Count: 20
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  70. House Sparrow Passer domesticus
    # Count: 10
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  71. American Pipit Anthus rubescens
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  72. Pine Siskin Spinus pinus
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  73. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  74. Song Sparrow Melospiza melodia
    # Count: 5
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  75. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  76. Western Meadowlark Sturnella neglecta
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  77. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 5
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  78. Orange-crowned Warbler Leiothlypis celata
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  79. Common Yellowthroat Geothlypis trichas
    # Count: 8
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  80. Yellow Warbler Setophaga petechia
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  81. Yellow-rumped Warbler Setophaga coronata
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  82. Black-throated Gray Warbler Setophaga nigrescens
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  83. Townsend's Warbler Setophaga townsendi
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  84. Wilson's Warbler Cardellina pusilla
    # Count: 10
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  85. Blue Grosbeak Passerina caerulea
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  86. Lazuli Bunting Passerina amoena
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  87. Calliope Hummingbird Selasphorus calliope
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  88. Black-necked Stilt Himantopus mexicanus
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  89. American White Pelican Pelecanus erythrorhynchos
    # Count: 190
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  90. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  91. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  92. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  93. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  94. Snow Goose Anser caerulescens
    # Count: X
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  95. Greater White-fronted Goose Anser albifrons
    # Count: 500
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  96. Northern Shoveler Spatula clypeata
    # Count: X
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  97. American Wigeon Mareca americana
    # Count: 4
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  98. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  99. White-crowned Sparrow Zonotrichia leucophrys
    # Count: X
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  100. Savannah Sparrow Passerculus sandwichensis
    # Count: 5
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  101. Great-tailed Grackle Quiscalus mexicanus
    # Count: 2
    Date:
    Observer: Kevin Wistrom
    Location: Bethel Island--Piper Slough (private)
  102. Canada Goose Branta canadensis
    # Count: 4
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  103. Tundra Swan Cygnus columbianus
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  104. Bufflehead Bucephala albeola
    # Count: 16
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  105. Common Goldeneye Bucephala clangula
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  106. Pied-billed Grebe Podilymbus podiceps
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  107. Horned Grebe Podiceps auritus
    # Count: 1
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  108. Western Grebe Aechmophorus occidentalis
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  109. Wilson's Snipe Gallinago delicata
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  110. Greater Yellowlegs Tringa melanoleuca
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  111. Say's Phoebe Sayornis saya
    # Count: 1
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  112. Ruby-crowned Kinglet Corthylio calendula
    # Count: 3
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  113. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  114. California Towhee Melozone crissalis
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  115. Tricolored Blackbird Agelaius tricolor
    # Count: 2
    Date:
    Observer: sonja raub
    Location: Bethel Island--Piper Slough (private)
  116. Cackling Goose Branta hutchinsii
    # Count: 30
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  117. Wood Duck Aix sponsa
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  118. Green-winged Teal Anas crecca
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  119. Canvasback Aythya valisineria
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  120. Lesser Scaup Aythya affinis
    # Count: 30
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  121. Common Merganser Mergus merganser
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  122. Ruddy Duck Oxyura jamaicensis
    # Count: 160
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  123. Clark's Grebe Aechmophorus clarkii
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  124. Virginia Rail Rallus limicola
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  125. Sora Porzana carolina
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  126. Sandhill Crane Antigone canadensis
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  127. Black-bellied Plover Pluvialis squatarola
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  128. Short-billed Gull Larus brachyrhynchus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  129. Ring-billed Gull Larus delawarensis
    # Count: 23
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  130. Western Gull Larus occidentalis
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  131. Herring Gull Larus argentatus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  132. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  133. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  134. Golden-crowned Kinglet Regulus satrapa
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  135. Hermit Thrush Catharus guttatus
    # Count: 7
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  136. Lesser Goldfinch Spinus psaltria
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  137. Fox Sparrow Passerella iliaca
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  138. Dark-eyed Junco Junco hyemalis
    # Count: 4
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  139. Ross's Goose Anser rossii
    # Count: 30
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  140. Northern Pintail Anas acuta
    # Count: 5
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  141. Least Sandpiper Calidris minutilla
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  142. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 50
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  143. Bank Swallow Riparia riparia
    # Count: 3
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  144. Glaucous-winged Gull Larus glaucescens
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  145. Greater Scaup Aythya marila
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  146. Eared Grebe Podiceps nigricollis
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  147. Gadwall Mareca strepera
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  148. Ring-necked Duck Aythya collaris
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  149. Horned Lark Eremophila alpestris
    # Count: 8
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  150. Wild Turkey Meleagris gallopavo
    # Count: 3
    Date:
    Observer: Zach Weinstein
    Location: Bethel Island--Piper Slough (private)
  151. Violet-green Swallow Tachycineta thalassina
    # Count: 3
    Date:
    Observer: Zach Weinstein
    Location: Bethel Island--Piper Slough (private)
  152. White-faced Ibis Plegadis chihi
    # Count: 25
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  153. Lark Sparrow Chondestes grammacus
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  154. Black Tern Chlidonias niger
    # Count: 2
    Date:
    Observer: Robert Raffel
    Location: Bethel Island--Piper Slough (private)
  155. Cinnamon Teal Spatula cyanoptera
    # Count: 2
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  156. Allen's Hummingbird Selasphorus sasin
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  157. Barn Owl Tyto alba
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  158. Lawrence's Goldfinch Spinus lawrencei
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  159. American Bittern Botaurus lentiginosus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  160. Loggerhead Shrike Lanius ludovicianus
    # Count: 1
    Date:
    Observer: Max Laubstein
    Location: Bethel Island--Piper Slough (private)
  161. Prairie Falcon Falco mexicanus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  162. White-tailed Kite Elanus leucurus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  163. Barrow's Goldeneye Bucephala islandica
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  164. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  165. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  166. Lesser Yellowlegs Tringa flavipes
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  167. Pacific Wren Troglodytes pacificus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  168. Willow Flycatcher Empidonax traillii
    # Count: 2
    Date:
    Observer: jerald britten
    Location: Bethel Island--Piper Slough (private)
  169. Western Wood-Pewee Contopus sordidulus
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  170. Wilson's Phalarope Phalaropus tricolor
    # Count: 6
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  171. Willet Tringa semipalmata
    # Count: 16
    Date:
    Observer: Ellen Grim
    Location: Bethel Island--Piper Slough (private)
  172. Chipping Sparrow Spizella passerina
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  173. Rufous Hummingbird Selasphorus rufus
    # Count: 1
    Date:
    Observer: Robert Raffel
    Location: Bethel Island--Piper Slough (private)
  174. Long-billed Curlew Numenius americanus
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  175. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  176. Purple Finch Haemorhous purpureus
    # Count: 2
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  177. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Bethel Island--Piper Slough (private)
  178. Iceland Gull Larus glaucoides
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  179. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  180. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Mark Schulist
    Location: Bethel Island--Piper Slough (private)
  181. Rock Wren Salpinctes obsoletus
    # Count: 1
    Date:
    Observer: Emilie Strauss
    Location: Bethel Island--Piper Slough (private)
  182. Western Cattle Egret Bubulcus ibis
    # Count: 1
    Date:
    Observer: Bob Dunn
    Location: Bethel Island--Piper Slough (private)
  183. Sabine's Gull Xema sabini
    # Count: 1
    Date:
    Observer: Bob Dunn
    Location: Bethel Island--Piper Slough (private)
  184. Parasitic Jaeger Stercorarius parasiticus
    # Count: 1
    Date:
    Observer: Michael Park
    Location: Bethel Island--Piper Slough (private)
  185. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  186. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Lauren de Boer
    Location: Bethel Island--Piper Slough (private)
  187. Red-breasted Sapsucker Sphyrapicus ruber
    # Count: 1
    Date:
    Observer: Jim Rowoth
    Location: Bethel Island--Piper Slough (private)
  188. Common Gallinule Gallinula galeata
    # Count: 2
    Date:
    Observer: Bob Dunn
    Location: Bethel Island--Piper Slough (private)
  189. Baird's Sandpiper Calidris bairdii
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  190. Brewer's Sparrow Spizella breweri
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  191. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  192. Cassin's Vireo Vireo cassinii
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  193. Red-breasted Merganser Mergus serrator
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  194. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  195. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  196. Golden Eagle Aquila chrysaetos
    # Count: 2
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  197. Red-throated Loon Gavia stellata
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  198. Hermit Warbler Setophaga occidentalis
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  199. Townsend's Solitaire Myadestes townsendi
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  200. Short-eared Owl Asio flammeus
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  201. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  202. Phainopepla Phainopepla nitens
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  203. Burrowing Owl Athene cunicularia
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Bethel Island--Piper Slough (private)
  204. Summer Tanager Piranga rubra
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  205. Hammond's Flycatcher Empidonax hammondii
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  206. Cassin's Kingbird Tyrannus vociferans
    # Count: 2
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  207. Gray Flycatcher Empidonax wrightii
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  208. Rough-legged Hawk Buteo lagopus
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  209. Pacific Loon Gavia pacifica
    # Count: 2
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  210. Clay-colored Sparrow Spizella pallida
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  211. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  212. Common Tern Sterna hirundo
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  213. Lewis's Woodpecker Melanerpes lewis
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  214. Bell's Vireo Vireo bellii
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  215. Wrentit Chamaea fasciata
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  216. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)
  217. Dusky Flycatcher Empidonax oberholseri
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  218. Red Knot Calidris canutus
    # Count: 25
    Date:
    Observer: Contra Costa County Historical Record
    Location: Bethel Island--Piper Slough (private)

Exotic: Provisional (1)

  1. Mute Swan Cygnus olor
    # Count: 6
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)

Exotic: Escapee (1)

  1. Muscovy Duck Cairina moschata
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)

Hybrids (3)

  1. Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsii
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  2. Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescens
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  3. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)

Additional Taxa (34)

  1. Rufous/Allen's Hummingbird Selasphorus rufus/sasin
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  2. hummingbird sp. Trochilidae sp.
    # Count: 2
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  3. swallow sp. Hirundinidae sp.
    # Count: 200
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  4. Red-winged/Tricolored Blackbird Agelaius phoeniceus/tricolor
    # Count: 3
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  5. Spinus sp. Spinus sp.
    # Count: 6
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  6. Zonotrichia sp. Zonotrichia sp.
    # Count: 70
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  7. Snow/Ross's Goose Anser caerulescens/rossii
    # Count: 646
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  8. goose sp. Anatidae (goose sp.)
    # Count: 650
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  9. duck sp. Anatidae (duck sp.)
    # Count: 110
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  10. blackbird sp. Icteridae sp.
    # Count: 50
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  11. peep sp. Calidris sp. (peep sp.)
    # Count: 13
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  12. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 4
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  13. Larus sp. Larus sp.
    # Count: 2
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  14. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 16
    Date:
    Observer: Vicens Vila
    Location: Bethel Island--Piper Slough (private)
  15. new world sparrow sp. Passerellidae sp.
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  16. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  17. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: X
    Date:
    Observer: Bill Cone
    Location: Bethel Island--Piper Slough (private)
  18. gull sp. Larinae sp.
    # Count: X
    Date:
    Observer: Bill Cone
    Location: Bethel Island--Piper Slough (private)
  19. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  20. tern sp. Sterninae sp.
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  21. new world oriole sp. Icterus sp.
    # Count: 2
    Date:
    Observer: Ellen Grim
    Location: Bethel Island--Piper Slough (private)
  22. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  23. white egret sp. Egretta/Bubulcus/Ardea sp.
    # Count: 3
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  24. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  25. shorebird sp. Charadriiformes sp.
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  26. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Ethan Monk
    Location: Bethel Island--Piper Slough (private)
  27. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: logan kahle
    Location: Bethel Island--Piper Slough (private)
  28. swan sp. Cygnus sp.
    # Count: 10
    Date:
    Observer: Emilie Strauss
    Location: Bethel Island--Piper Slough (private)
  29. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 10
    Date:
    Observer: Colin Meusel
    Location: Bethel Island--Piper Slough (private)
  30. cormorant sp. Phalacrocoracidae sp.
    # Count: X
    Date:
    Observer: Tom Cundith
    Location: Bethel Island--Piper Slough (private)
  31. loon sp. Gavia sp.
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  32. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  33. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)
  34. swift sp. Apodidae sp.
    # Count: 17
    Date:
    Observer: Steve Glover
    Location: Bethel Island--Piper Slough (private)