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Bird List

Updated ~11 seconds ago
206 All Years 40 This Year 2025 31 This Month Mar 2025
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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (206)

  1. Redhead Aythya americana
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  2. Ring-necked Duck Aythya collaris
    # Count: 6
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  3. Lesser Scaup Aythya affinis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  4. Bufflehead Bucephala albeola
    # Count: 12
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  5. Common Merganser Mergus merganser
    # Count: 8
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  6. Red-breasted Merganser Mergus serrator
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  7. Rock Pigeon Columba livia
    # Count: 9
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  8. Horned Grebe Podiceps auritus
    # Count: 5
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  9. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  10. Canada Goose Branta canadensis
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  11. Greater Scaup Aythya marila
    # Count: 3
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  12. Ring-billed Gull Larus delawarensis
    # Count: 15
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  13. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  14. American Crow Corvus brachyrhynchos
    # Count: 3
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  15. European Starling Sturnus vulgaris
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  16. Fish Crow Corvus ossifragus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  17. Common Grackle Quiscalus quiscula
    # Count: 4
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  18. Mallard Anas platyrhynchos
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  19. American Herring Gull Larus smithsonianus
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  20. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  21. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: Matthew Heintzelman
    Location: Williamsport Dam
  22. Ruddy Duck Oxyura jamaicensis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  23. Tundra Swan Cygnus columbianus
    # Count: 48
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  24. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  25. Wood Duck Aix sponsa
    # Count: 4
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  26. Common Goldeneye Bucephala clangula
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  27. Hooded Merganser Lophodytes cucullatus
    # Count: 8
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  28. Mourning Dove Zenaida macroura
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  29. Long-tailed Duck Clangula hyemalis
    # Count: 1
    Date:
    Observer: Dave Ferry
    Location: Williamsport Dam
  30. Golden Eagle Aquila chrysaetos
    # Count: 1
    Date:
    Observer: Dave Ferry
    Location: Williamsport Dam
  31. Cooper's Hawk Astur cooperii
    # Count: 1
    Date:
    Observer: Dave Ferry
    Location: Williamsport Dam
  32. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  33. Canvasback Aythya valisineria
    # Count: 11
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  34. Ross's Goose Anser rossii
    # Count: 1
    Date:
    Observer: Andy Keister
    Location: Williamsport Dam
  35. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  36. Northern Shoveler Spatula clypeata
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  37. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  38. American Coot Fulica americana
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  39. American Black Duck Anas rubripes
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  40. American Tree Sparrow Spizelloides arborea
    # Count: 1
    Date:
    Observer: Collin Porter
    Location: Williamsport Dam
  41. American Pipit Anthus rubescens
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  42. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  43. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  44. House Finch Haemorhous mexicanus
    # Count: 4
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  45. House Sparrow Passer domesticus
    # Count: 6
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  46. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Dave Ferry
    Location: Williamsport Dam
  47. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  48. Eastern Bluebird Sialia sialis
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  49. American Goldfinch Spinus tristis
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  50. Dark-eyed Junco Junco hyemalis
    # Count: 5
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  51. Carolina Wren Thryothorus ludovicianus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  52. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  53. American Robin Turdus migratorius
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  54. Northern Cardinal Cardinalis cardinalis
    # Count: 6
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  55. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  56. Black-capped Chickadee Poecile atricapillus
    # Count: 6
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  57. Tufted Titmouse Baeolophus bicolor
    # Count: 3
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  58. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  59. Red-winged Blackbird Agelaius phoeniceus
    # Count: 11
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  60. Cedar Waxwing Bombycilla cedrorum
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  61. American Wigeon Mareca americana
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  62. Chimney Swift Chaetura pelagica
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  63. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  64. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  65. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  66. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  67. Tree Swallow Tachycineta bicolor
    # Count: 50
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  68. Gray Catbird Dumetella carolinensis
    # Count: X
    Date:
    Observer: Joshua Penderville
    Location: Williamsport Dam
  69. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  70. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  71. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 2
    Date:
    Observer: Barbara Bennett
    Location: Williamsport Dam
  72. Common Nighthawk Chordeiles minor
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  73. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  74. Eastern Kingbird Tyrannus tyrannus
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  75. Bank Swallow Riparia riparia
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  76. Barn Swallow Hirundo rustica
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  77. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 2
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  78. Killdeer Charadrius vociferus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  79. Eastern Phoebe Sayornis phoebe
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  80. Great Crested Flycatcher Myiarchus crinitus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  81. White-breasted Nuthatch Sitta carolinensis
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  82. Brown Thrasher Toxostoma rufum
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  83. Common Yellowthroat Geothlypis trichas
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  84. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  85. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  86. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  87. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  88. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  89. White-throated Sparrow Zonotrichia albicollis
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  90. Yellow-rumped Warbler Setophaga coronata
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  91. Chipping Sparrow Spizella passerina
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  92. Field Sparrow Spizella pusilla
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  93. Yellow-bellied Sapsucker Sphyrapicus varius
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  94. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  95. White-winged Scoter Melanitta deglandi
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  96. Green-winged Teal Anas crecca
    # Count: 2
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  97. Mute Swan Cygnus olor
    # Count: 1
    Date:
    Observer: Andy Keister
    Location: Williamsport Dam
  98. Pine Siskin Spinus pinus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  99. Brown-headed Cowbird Molothrus ater
    # Count: 24
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  100. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  101. Black Vulture Coragyps atratus
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  102. Golden-crowned Kinglet Regulus satrapa
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  103. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  104. Winter Wren Troglodytes hiemalis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  105. Surf Scoter Melanitta perspicillata
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  106. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  107. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Williamsport Dam
  108. Greater Yellowlegs Tringa melanoleuca
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  109. Broad-winged Hawk Buteo platypterus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  110. Lesser Yellowlegs Tringa flavipes
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  111. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  112. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  113. Warbling Vireo Vireo gilvus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  114. Scarlet Tanager Piranga olivacea
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  115. Northern Mockingbird Mimus polyglottos
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  116. American Avocet Recurvirostra americana
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  117. Caspian Tern Hydroprogne caspia
    # Count: 7
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  118. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  119. Eastern Wood-Pewee Contopus virens
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  120. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  121. Gadwall Mareca strepera
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  122. Red-shouldered Hawk Buteo lineatus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  123. Pine Warbler Setophaga pinus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  124. Northern Parula Setophaga americana
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  125. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  126. Semipalmated Plover Charadrius semipalmatus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  127. Ruby-throated Hummingbird Archilochus colubris
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  128. Least Sandpiper Calidris minutilla
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  129. Laughing Gull Leucophaeus atricilla
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  130. American White Pelican Pelecanus erythrorhynchos
    # Count: 13
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  131. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Andy Keister
    Location: Williamsport Dam
  132. Northern House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: C Harbach
    Location: Williamsport Dam
  133. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  134. Common Tern Sterna hirundo
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  135. Eastern Towhee Pipilo erythrophthalmus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  136. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  137. Blue-winged Teal Spatula discors
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  138. Snow Goose Anser caerulescens
    # Count: 125
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  139. Northern Pintail Anas acuta
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  140. Iceland Gull Larus glaucoides
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  141. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  142. Ruddy Turnstone Arenaria interpres
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  143. Pileated Woodpecker Dryocopus pileatus
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  144. Baltimore Oriole Icterus galbula
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  145. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  146. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  147. Magnolia Warbler Setophaga magnolia
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  148. Black-throated Blue Warbler Setophaga caerulescens
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  149. Palm Warbler Setophaga palmarum
    # Count: 2
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  150. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  151. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  152. Forster's Tern Sterna forsteri
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  153. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  154. Neotropic Cormorant Nannopterum brasilianum
    # Count: 1
    Date:
    Observer: Billy Weber
    Location: Williamsport Dam
  155. American Golden-Plover Pluvialis dominica
    # Count: 1
    Date:
    Observer: Andy Keister
    Location: Williamsport Dam
  156. Black Scoter Melanitta americana
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  157. Red Phalarope Phalaropus fulicarius
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  158. Semipalmated Sandpiper Calidris pusilla
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  159. Dunlin Calidris alpina
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  160. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  161. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  162. Red-necked Grebe Podiceps grisegena
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  163. Harlequin Duck Histrionicus histrionicus
    # Count: 1
    Date:
    Observer: Andy Keister
    Location: Williamsport Dam
  164. Rusty Blackbird Euphagus carolinus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  165. Bay-breasted Warbler Setophaga castanea
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  166. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  167. Sanderling Calidris alba
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  168. Cackling Goose Branta hutchinsii
    # Count: 5
    Date:
    Observer: Eric Hartshaw
    Location: Williamsport Dam
  169. Cape May Warbler Setophaga tigrina
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  170. Tennessee Warbler Leiothlypis peregrina
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  171. Red-necked Phalarope Phalaropus lobatus
    # Count: 5
    Date:
    Observer: Bob Brown
    Location: Williamsport Dam
  172. Philadelphia Vireo Vireo philadelphicus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  173. Blackburnian Warbler Setophaga fusca
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  174. Wood Thrush Hylocichla mustelina
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  175. Great Black-backed Gull Larus marinus
    # Count: 1
    Date:
    Observer: Stephen Pinkerton
    Location: Williamsport Dam
  176. Lesser Black-backed Gull Larus fuscus
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  177. American Woodcock Scolopax minor
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  178. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  179. Wilson's Warbler Cardellina pusilla
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  180. Worm-eating Warbler Helmitheros vermivorum
    # Count: 1
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  181. Long-tailed Jaeger Stercorarius longicaudus
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  182. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  183. Grasshopper Sparrow Ammodramus savannarum
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  184. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  185. Eastern Meadowlark Sturnella magna
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  186. Fox Sparrow Passerella iliaca
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  187. Snow Bunting Plectrophenax nivalis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  188. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Eric Hartshaw
    Location: Williamsport Dam
  189. Cave Swallow Petrochelidon fulva
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  190. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  191. Black Tern Chlidonias niger
    # Count: 7
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  192. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  193. Wild Turkey Meleagris gallopavo
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  194. Horned Lark Eremophila alpestris
    # Count: 4
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  195. Greater White-fronted Goose Anser albifrons
    # Count: 13
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  196. Trumpeter Swan Cygnus buccinator
    # Count: 1
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam
  197. Brant Branta bernicla
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  198. Black-bellied Plover Pluvialis squatarola
    # Count: 1
    Date:
    Observer: Eric Hartshaw
    Location: Williamsport Dam
  199. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 1
    Date:
    Observer: Eric Hartshaw
    Location: Williamsport Dam
  200. Orchard Oriole Icterus spurius
    # Count: 3
    Date:
    Observer: Eric Hartshaw
    Location: Williamsport Dam
  201. Ovenbird Seiurus aurocapilla
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  202. Glaucous Gull Larus hyperboreus
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  203. Canada Warbler Cardellina canadensis
    # Count: 1
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam
  204. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam
  205. Prairie Warbler Setophaga discolor
    # Count: X
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam
  206. Little Gull Hydrocoloeus minutus
    # Count: 2
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam

Exotic: Escapee (1)

  1. Graylag Goose Anser anser
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam

Hybrids (3)

  1. Hooded x Common Merganser (hybrid) Lophodytes cucullatus x Mergus merganser
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  2. Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripes
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  3. Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam

Additional Taxa (35)

  1. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 9
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  2. crow sp. Corvus sp. (crow sp.)
    # Count: 3
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  3. Larus sp. Larus sp.
    # Count: 2
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  4. Common/Red-breasted Merganser Mergus merganser/serrator
    # Count: 1
    Date:
    Observer: Tyler Wenzel
    Location: Williamsport Dam
  5. Cackling/Canada Goose Branta hutchinsii/canadensis
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  6. Aythya sp. Aythya sp.
    # Count: 4
    Date:
    Observer: Collin Porter
    Location: Williamsport Dam
  7. gull sp. Larinae sp.
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  8. swallow sp. Hirundinidae sp.
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  9. duck sp. Anatidae (duck sp.)
    # Count: 2
    Date:
    Observer: David Rothrock
    Location: Williamsport Dam
  10. swan sp. Cygnus sp.
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  11. blackbird sp. Icteridae sp.
    # Count: 100
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  12. small falcon sp. Falco sp. (small falcon sp.)
    # Count: 1
    Date:
    Observer: Trent Morrison
    Location: Williamsport Dam
  13. Domestic goose sp. (Domestic type) Anser sp. (Domestic type)
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  14. passerine sp. Passeriformes sp.
    # Count: 2
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  15. peep sp. Calidris sp. (peep sp.)
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  16. goose sp. Anatidae (goose sp.)
    # Count: 1
    Date:
    Observer: Drew Haussmann
    Location: Williamsport Dam
  17. Sharp-shinned/Cooper's Hawk Accipiter striatus/Astur cooperii
    # Count: 1
    Date:
    Observer: Drew Haussmann
    Location: Williamsport Dam
  18. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  19. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 1
    Date:
    Observer: Jean Dalton
    Location: Williamsport Dam
  20. heron sp. Ardeidae sp.
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  21. crow/raven sp. Corvus sp.
    # Count: 3
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  22. new world sparrow sp. Passerellidae sp.
    # Count: 4
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  23. bird sp. Aves sp.
    # Count: 1
    Date:
    Observer: Allison Matlock
    Location: Williamsport Dam
  24. shorebird sp. Charadriiformes sp. (shorebird sp.)
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  25. Sterna sp. Sterna sp.
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  26. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  27. Accipitrine hawk sp. (former Accipiter sp.) Aerospiza/Tachyspiza/Accipiter/Astur sp.
    # Count: 1
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  28. new world warbler sp. Parulidae sp.
    # Count: 5
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  29. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    # Count: 1
    Date:
    Observer: C Harbach
    Location: Williamsport Dam
  30. loon sp. Gavia sp.
    # Count: 6
    Date:
    Observer: Bobby Brown
    Location: Williamsport Dam
  31. Bay-breasted/Blackpoll Warbler Setophaga castanea/striata
    # Count: 5
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  32. merganser sp. Mergellus/Lophodytes/Mergus sp.
    # Count: 3
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  33. eagle sp. Accipitridae sp. (eagle sp.)
    # Count: 1
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  34. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 2
    Date:
    Observer: David Brown
    Location: Williamsport Dam
  35. vireo sp. Vireo sp.
    # Count: 1
    Date:
    Observer: LycoBirds Data
    Location: Williamsport Dam