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Difficult Run Stream Valley Park (Oakton)

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Bird List

Updated ~18 seconds ago
157 All Years 53 This Year 2024 0 This Month May 2024
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (157)

  1. Chimney Swift Chaetura pelagica
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  2. Ruby-throated Hummingbird Archilochus colubris
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  3. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  4. Downy Woodpecker Dryobates pubescens
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  5. Eastern Wood-Pewee Contopus virens
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  6. Great Crested Flycatcher Myiarchus crinitus
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  7. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  8. Red-eyed Vireo Vireo olivaceus
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  9. Carolina Chickadee Poecile carolinensis
    # Count: 5
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  10. Tufted Titmouse Baeolophus bicolor
    # Count: 8
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  11. White-breasted Nuthatch Sitta carolinensis
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  12. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 3
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  13. House Wren Troglodytes aedon
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  14. Carolina Wren Thryothorus ludovicianus
    # Count: 4
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  15. Gray Catbird Dumetella carolinensis
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  16. Eastern Bluebird Sialia sialis
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  17. American Robin Turdus migratorius
    # Count: 4
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  18. American Goldfinch Spinus tristis
    # Count: 4
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  19. Chipping Sparrow Spizella passerina
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  20. White-throated Sparrow Zonotrichia albicollis
    # Count: 4
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  21. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  22. Eastern Towhee Pipilo erythrophthalmus
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  23. Brown-headed Cowbird Molothrus ater
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  24. Common Yellowthroat Geothlypis trichas
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  25. Hooded Warbler Setophaga citrina
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  26. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  27. Northern Parula Setophaga americana
    # Count: 5
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  28. Black-throated Blue Warbler Setophaga caerulescens
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  29. Yellow-rumped Warbler Setophaga coronata
    # Count: 2
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  30. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  31. Northern Cardinal Cardinalis cardinalis
    # Count: 10
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  32. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  33. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  34. Yellow-bellied Sapsucker Sphyrapicus varius
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  35. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  36. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  37. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  38. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  39. Mourning Dove Zenaida macroura
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  40. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  41. Golden-crowned Kinglet Regulus satrapa
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  42. Winter Wren Troglodytes hiemalis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  43. Rusty Blackbird Euphagus carolinus
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  44. Black Vulture Coragyps atratus
    # Count: 1
    Date:
    Observer: Will Brooks
    Location: Difficult Run Stream Valley Park (Oakton)
  45. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  46. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Eileen Ellsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  47. Eastern Phoebe Sayornis phoebe
    # Count: 1
    Date:
    Observer: Eileen Ellsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  48. House Sparrow Passer domesticus
    # Count: 1
    Date:
    Observer: Eileen Ellsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  49. House Finch Haemorhous mexicanus
    # Count: 6
    Date:
    Observer: Eileen Ellsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  50. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: John Wilson
    Location: Difficult Run Stream Valley Park (Oakton)
  51. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: John Wilson
    Location: Difficult Run Stream Valley Park (Oakton)
  52. Pileated Woodpecker Dryocopus pileatus
    # Count: 1
    Date:
    Observer: John Wilson
    Location: Difficult Run Stream Valley Park (Oakton)
  53. Dark-eyed Junco Junco hyemalis
    # Count: 10
    Date:
    Observer: John Wilson
    Location: Difficult Run Stream Valley Park (Oakton)
  54. Canada Goose Branta canadensis
    # Count: 14
    Date:
    Observer: Sarah Hollingsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  55. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Sarah Hollingsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  56. Northern Flicker Colaptes auratus
    # Count: 2
    Date:
    Observer: Sarah Hollingsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  57. Fish Crow Corvus ossifragus
    # Count: 1
    Date:
    Observer: Sarah Hollingsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  58. Wild Turkey Meleagris gallopavo
    # Count: 9
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  59. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  60. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  61. Brown Thrasher Toxostoma rufum
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  62. Cedar Waxwing Bombycilla cedrorum
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  63. Magnolia Warbler Setophaga magnolia
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  64. Bay-breasted Warbler Setophaga castanea
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  65. Scarlet Tanager Piranga olivacea
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  66. Ovenbird Seiurus aurocapilla
    # Count: 2
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  67. Philadelphia Vireo Vireo philadelphicus
    # Count: 1
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  68. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  69. Wood Thrush Hylocichla mustelina
    # Count: 1
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  70. Black-and-white Warbler Mniotilta varia
    # Count: 2
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  71. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 1
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  72. Veery Catharus fuscescens
    # Count: 1
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  73. Eastern Kingbird Tyrannus tyrannus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  74. Common Nighthawk Chordeiles minor
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  75. White-eyed Vireo Vireo griseus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  76. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  77. Acadian Flycatcher Empidonax virescens
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  78. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  79. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  80. Common Grackle Quiscalus quiscula
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  81. Louisiana Waterthrush Parkesia motacilla
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  82. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  83. Canada Warbler Cardellina canadensis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  84. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Paul Schmidt
    Location: Difficult Run Stream Valley Park (Oakton)
  85. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  86. Red-winged Blackbird Agelaius phoeniceus
    # Count: 3
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  87. Barn Swallow Hirundo rustica
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  88. Yellow-throated Warbler Setophaga dominica
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  89. Mallard Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  90. Barred Owl Strix varia
    # Count: 2
    Date:
    Observer: Pete Huffer
    Location: Difficult Run Stream Valley Park (Oakton)
  91. European Starling Sturnus vulgaris
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  92. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  93. Northern Mockingbird Mimus polyglottos
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  94. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  95. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  96. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  97. Purple Finch Haemorhous purpureus
    # Count: 9
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  98. Fox Sparrow Passerella iliaca
    # Count: 2
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  99. Wood Duck Aix sponsa
    # Count: 4
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  100. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  101. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Sarah Hollingsworth
    Location: Difficult Run Stream Valley Park (Oakton)
  102. American Woodcock Scolopax minor
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  103. Sharp-shinned Hawk Accipiter striatus
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  104. Field Sparrow Spizella pusilla
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  105. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  106. Blackburnian Warbler Setophaga fusca
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  107. Pine Warbler Setophaga pinus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  108. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: Cara Young
    Location: Difficult Run Stream Valley Park (Oakton)
  109. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: stephen johnson šŸ¦œ
    Location: Difficult Run Stream Valley Park (Oakton)
  110. Mourning Warbler Geothlypis philadelphia
    # Count: 1
    Date:
    Observer: Daniel Lebbin
    Location: Difficult Run Stream Valley Park (Oakton)
  111. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  112. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  113. Palm Warbler Setophaga palmarum
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  114. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 2
    Date:
    Observer: stephen johnson šŸ¦œ
    Location: Difficult Run Stream Valley Park (Oakton)
  115. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  116. Gray-cheeked Thrush Catharus minimus
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  117. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  118. Tennessee Warbler Leiothlypis peregrina
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  119. Wilson's Warbler Cardellina pusilla
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  120. Prairie Warbler Setophaga discolor
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  121. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  122. Baltimore Oriole Icterus galbula
    # Count: 4
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  123. Pine Siskin Spinus pinus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  124. Broad-winged Hawk Buteo platypterus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  125. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  126. Rock Pigeon Columba livia
    # Count: 15
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  127. Cape May Warbler Setophaga tigrina
    # Count: 1
    Date:
    Observer: stephen johnson šŸ¦œ
    Location: Difficult Run Stream Valley Park (Oakton)
  128. American Bittern Botaurus lentiginosus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  129. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  130. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  131. Bobolink Dolichonyx oryzivorus
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  132. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  133. Warbling Vireo Vireo gilvus
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  134. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  135. Tree Swallow Tachycineta bicolor
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  136. Blue Grosbeak Passerina caerulea
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  137. Orchard Oriole Icterus spurius
    # Count: 2
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  138. Mississippi Kite Ictinia mississippiensis
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  139. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: Jeff Clark
    Location: Difficult Run Stream Valley Park (Oakton)
  140. Worm-eating Warbler Helmitheros vermivorum
    # Count: 1
    Date:
    Observer: Mark S. Hoffman
    Location: Difficult Run Stream Valley Park (Oakton)
  141. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  142. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  143. Prothonotary Warbler Protonotaria citrea
    # Count: 1
    Date:
    Observer: stephen johnson šŸ¦œ
    Location: Difficult Run Stream Valley Park (Oakton)
  144. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  145. Ring-billed Gull Larus delawarensis
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  146. American Black Duck Anas rubripes
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  147. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  148. Yellow-bellied Flycatcher Empidonax flaviventris
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  149. Golden-winged Warbler Vermivora chrysoptera
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  150. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Paul Hives
    Location: Difficult Run Stream Valley Park (Oakton)
  151. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  152. Grasshopper Sparrow Ammodramus savannarum
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  153. Hooded Merganser Lophodytes cucullatus
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  154. Tundra Swan Cygnus columbianus
    # Count: 35
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  155. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  156. Wilson's Snipe Gallinago delicata
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  157. Kentucky Warbler Geothlypis formosa
    # Count: 1
    Date:
    Observer: Frederick Atwood
    Location: Difficult Run Stream Valley Park (Oakton)

Hybrids (1)

  1. Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanoptera
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)

Additional Taxa (33)

  1. Catharus sp. Catharus sp.
    # Count: 1
    Date:
    Observer: Adrin A.
    Location: Difficult Run Stream Valley Park (Oakton)
  2. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: Megan Massa
    Location: Difficult Run Stream Valley Park (Oakton)
  3. vireo sp. Vireo sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  4. swallow sp. Hirundinidae sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  5. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  6. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 1
    Date:
    Observer: Barbara Roberts
    Location: Difficult Run Stream Valley Park (Oakton)
  7. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  8. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  9. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 5
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  10. Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/traillii
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  11. bird sp. Aves sp.
    # Count: 2
    Date:
    Observer: stephen johnson šŸ¦œ
    Location: Difficult Run Stream Valley Park (Oakton)
  12. crow sp. Corvus sp. (crow sp.)
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  13. Mallard/American Black Duck Anas platyrhynchos/rubripes
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  14. passerine sp. Passeriformes sp.
    # Count: 1
    Date:
    Observer: Daniel Lebbin
    Location: Difficult Run Stream Valley Park (Oakton)
  15. blackbird sp. Icteridae sp.
    # Count: 4
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  16. gull sp. Larinae sp.
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  17. woodpecker sp. Picidae sp.
    # Count: 2
    Date:
    Observer: Pete Huffer
    Location: Difficult Run Stream Valley Park (Oakton)
  18. House/Purple Finch Haemorhous mexicanus/purpureus
    # Count: 2
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  19. Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmus
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  20. Philadelphia/Warbling Vireo Vireo philadelphicus/gilvus
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  21. Bay-breasted/Blackpoll Warbler Setophaga castanea/striata
    # Count: 2
    Date:
    Observer: Frederick Atwood
    Location: Difficult Run Stream Valley Park (Oakton)
  22. duck sp. Anatidae (duck sp.)
    # Count: 2
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  23. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Amiel Hopkins
    Location: Difficult Run Stream Valley Park (Oakton)
  24. Carolina/Black-capped Chickadee Poecile carolinensis/atricapillus
    # Count: 1
    Date:
    Observer: Pete Huffer
    Location: Difficult Run Stream Valley Park (Oakton)
  25. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 3
    Date:
    Observer: Carine Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  26. new world sparrow sp. Passerellidae sp.
    # Count: 1
    Date:
    Observer: Joshua Berman
    Location: Difficult Run Stream Valley Park (Oakton)
  27. Setophaga sp. Setophaga sp.
    # Count: 15
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  28. wren sp. Troglodytidae sp.
    # Count: 1
    Date:
    Observer: Charlie Barnard Jr.
    Location: Difficult Run Stream Valley Park (Oakton)
  29. nuthatch sp. Sitta sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  30. Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensis
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  31. Leiothlypis sp. Leiothlypis sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  32. new world oriole sp. Icterus sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)
  33. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Nick Newberry
    Location: Difficult Run Stream Valley Park (Oakton)