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

Mercer

Map

Explore...

Bird List

Updated ~16 hours ago
300 All Years 211 This Year 2024 163 This Month May 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 (163)

  1. Canada Goose Branta canadensis
    # Count: 13
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  2. Mute Swan Cygnus olor
    # Count: X
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  3. Wood Duck Aix sponsa
    # Count: 1
    Date:
    Observer: Todd Frantz
    Location: Etra Lake Park and Arboretum
  4. Mallard Anas platyrhynchos
    # Count: X
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  5. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Terryl Tindall
    Location: Mercer Corporate Park, Robbinsville
  6. Common Merganser Mergus merganser
    # Count: 2
    Date:
    Observer: Matthew Ueckermann
    Location: Washington Crossing Pennington Rd, Titusville US-NJ 40.29552, -74.86792
  7. Wild Turkey Meleagris gallopavo
    # Count: 1
    Date:
    Observer: Sarang Gopalakrishnan
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  8. Rock Pigeon Columba livia
    # Count: 10
    Date:
    Observer: Sarang Gopalakrishnan
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  9. Mourning Dove Zenaida macroura
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  10. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Jessica Howland
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  11. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: 1
    Date:
    Observer: James McCormick
    Location: Baldpate Mountain--Ted Stiles Preserve
  12. Common Nighthawk Chordeiles minor
    # Count: 2
    Date:
    Observer: Diego Bustamante
    Location: Fiddler's Creek/Hollystone Preserve
  13. Chimney Swift Chaetura pelagica
    # Count: 14
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  14. Ruby-throated Hummingbird Archilochus colubris
    # Count: 1
    Date:
    Observer: Jean Bickal
    Location: 136 Mercer St, Trenton US-NJ 40.21786, -74.76118
  15. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Blondcrested warbler
    Location: Dinky Line Trail
  16. Killdeer Charadrius vociferus
    # Count: 1
    Date:
    Observer: Rachel Adler
    Location: Pole Farm (Mercer County Park NW)
  17. American Woodcock Scolopax minor
    # Count: 1
    Date:
    Observer: Tim Brown
    Location: Stony Brook-Millstone Watershed Preserve
  18. Wilson's Snipe Gallinago delicata
    # Count: 1
    Date:
    Observer: JamEs ParRis
    Location: Pole Farm (Mercer County Park NW)
  19. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  20. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Jason Hall
    Location: Cadwalader Park
  21. Lesser Yellowlegs Tringa flavipes
    # Count: 1
    Date:
    Observer: Old Sam Peabody
    Location: Miry Run Natural Area
  22. Greater Yellowlegs Tringa melanoleuca
    # Count: 3
    Date:
    Observer: Rachel Adler
    Location: Pole Farm (Mercer County Park NW)
  23. Least Sandpiper Calidris minutilla
    # Count: 2
    Date:
    Observer: Blondcrested warbler
    Location: Lake Carnegie--Dam
  24. Pectoral Sandpiper Calidris melanotos
    # Count: 2
    Date:
    Observer: Old Sam Peabody
    Location: Miry Run Natural Area
  25. Semipalmated Sandpiper Calidris pusilla
    # Count: 2
    Date:
    Observer: Old Sam Peabody
    Location: Miry Run Natural Area
  26. Laughing Gull Leucophaeus atricilla
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  27. Ring-billed Gull Larus delawarensis
    # Count: 2
    Date:
    Observer: Vincent F. Nichnadowicz
    Location: "home"
  28. Herring Gull Larus argentatus
    # Count: 3
    Date:
    Observer: Ben Hejna
    Location: Baldpate Mountain--Ted Stiles Preserve
  29. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Mercer County Park
  30. Forster's Tern Sterna forsteri
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Abbott Marshlands--John A. Roebling Park
  31. Common Loon Gavia immer
    # Count: 2
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  32. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  33. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Todd Frantz
    Location: Etra Lake Park and Arboretum
  34. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Diego Bustamante
    Location: Dinky Line Trail
  35. Great Blue Heron Ardea herodias
    # Count: 3
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  36. Glossy Ibis Plegadis falcinellus
    # Count: 2
    Date:
    Observer: Jack Hagan
    Location: Hamilton Veterans Park
  37. Black Vulture Coragyps atratus
    # Count: 2
    Date:
    Observer: Jim Serach
    Location: 223–225 NJ-31, Hopewell US-NJ 40.37581, -74.80091
  38. Turkey Vulture Cathartes aura
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  39. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Alexander Sokolowski
    Location: Goldfinch Boulevard, Princeton, New Jersey, US (40.313, -74.638)
  40. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  41. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  42. Bald Eagle Haliaeetus leucocephalus
    # Count: 2
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  43. Red-shouldered Hawk Buteo lineatus
    # Count: 3
    Date:
    Observer: Anne DeRemer
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  44. Broad-winged Hawk Buteo platypterus
    # Count: 1
    Date:
    Observer: brian harrison
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  45. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  46. Eastern Screech-Owl Megascops asio
    # Count: 1
    Date:
    Observer: Scott Lundquist
    Location: Baldwin Lake
  47. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Daniel Burgoyne
    Location: Pole Farm (Mercer County Park NW)
  48. Barred Owl Strix varia
    # Count: 1
    Date:
    Observer: Old Sam Peabody
    Location: Home
  49. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  50. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  51. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: David Magier
    Location: 16 Stonebridge Ln, Princeton US-NJ 40.31846, -74.66070
  52. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  53. Pileated Woodpecker Dryocopus pileatus
    # Count: 1
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  54. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  55. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  56. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Chris Brown
    Location: Abbott Marshlands--Rowan Lake/Watson Woods
  57. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Fairfax Hutter
    Location: Baldpate Mountain--Ted Stiles Preserve
  58. Eastern Wood-Pewee Contopus virens
    # Count: 4
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  59. Yellow-bellied Flycatcher Empidonax flaviventris
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Abbott Marshlands--John A. Roebling Park
  60. Willow Flycatcher Empidonax traillii
    # Count: 2
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  61. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: WCAS Audubon
    Location: Hillside Farm Preserve
  62. Eastern Phoebe Sayornis phoebe
    # Count: 1
    Date:
    Observer: Sarang Gopalakrishnan
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  63. Great Crested Flycatcher Myiarchus crinitus
    # Count: 1
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  64. Eastern Kingbird Tyrannus tyrannus
    # Count: 1
    Date:
    Observer: Vincent F. Nichnadowicz
    Location: "home"
  65. White-eyed Vireo Vireo griseus
    # Count: 1
    Date:
    Observer: James McCormick
    Location: Baldpate Mountain--Ted Stiles Preserve
  66. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  67. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: Old Sam Peabody
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  68. Warbling Vireo Vireo gilvus
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  69. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Princeton University campus
  70. Blue Jay Cyanocitta cristata
    # Count: 2
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  71. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Alex Wiebe
    Location: Princeton University campus
  72. Fish Crow Corvus ossifragus
    # Count: 1
    Date:
    Observer: Alex Wiebe
    Location: Princeton University campus
  73. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Alex Wiebe
    Location: Princeton University campus
  74. Carolina Chickadee Poecile carolinensis
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  75. Black-capped Chickadee Poecile atricapillus
    # Count: X
    Date:
    Observer: Victoria Hughes
    Location: Campus Walk
  76. Tufted Titmouse Baeolophus bicolor
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  77. Bank Swallow Riparia riparia
    # Count: 1
    Date:
    Observer: Jessica Howland
    Location: Miry Run Natural Area
  78. Tree Swallow Tachycineta bicolor
    # Count: 8
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  79. Purple Martin Progne subis
    # Count: X
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  80. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  81. Barn Swallow Hirundo rustica
    # Count: X
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  82. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 1
    Date:
    Observer: Jessica Howland
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  83. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Nancy Brooks
    Location: Pole Farm (Mercer County Park NW)
  84. White-breasted Nuthatch Sitta carolinensis
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  85. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Jen Walsh Fisher
    Location: Herrontown Woods
  86. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Old Sam Peabody
    Location: Baldpate Mountain--Ted Stiles Preserve
  87. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  88. House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: David Magier
    Location: Charles H. Rogers Wildlife Refuge, Princeton, NJ (40.327424,-74.659694)
  89. Winter Wren Troglodytes hiemalis
    # Count: 1
    Date:
    Observer: Susan Matson
    Location: Delaware and Raritan Canal SP--Dyson Tract Area
  90. Marsh Wren Cistothorus palustris
    # Count: 2
    Date:
    Observer: Bill Pitman
    Location: Abbott Marshlands--John A. Roebling Park
  91. Carolina Wren Thryothorus ludovicianus
    # Count: 2
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  92. European Starling Sturnus vulgaris
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  93. Gray Catbird Dumetella carolinensis
    # Count: 8
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  94. Brown Thrasher Toxostoma rufum
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  95. Northern Mockingbird Mimus polyglottos
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Princeton University campus
  96. Eastern Bluebird Sialia sialis
    # Count: 1
    Date:
    Observer: Vincent F. Nichnadowicz
    Location: "home"
  97. Veery Catharus fuscescens
    # Count: 10
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  98. Gray-cheeked Thrush Catharus minimus
    # Count: 1
    Date:
    Observer: WCAS Audubon
    Location: Hillside Farm Preserve
  99. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  100. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Jessica Howland
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  101. Wood Thrush Hylocichla mustelina
    # Count: 2
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  102. American Robin Turdus migratorius
    # Count: X
    Date:
    Observer: Alex Freeman
    Location: Hamilton Veterans Park
  103. Cedar Waxwing Bombycilla cedrorum
    # Count: 11
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  104. House Sparrow Passer domesticus
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  105. House Finch Haemorhous mexicanus
    # Count: 2
    Date:
    Observer: Bill Pitman
    Location: La maison de ma soeur
  106. Purple Finch Haemorhous purpureus
    # Count: 1
    Date:
    Observer: Daniel Burgoyne
    Location: Pole Farm (Mercer County Park NW)
  107. Pine Siskin Spinus pinus
    # Count: 1
    Date:
    Observer: David Minoli
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  108. American Goldfinch Spinus tristis
    # Count: 2
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  109. Grasshopper Sparrow Ammodramus savannarum
    # Count: 1
    Date:
    Observer: Daniel Kalamarides
    Location: Pole Farm (Mercer County Park NW)
  110. Chipping Sparrow Spizella passerina
    # Count: 4
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  111. Field Sparrow Spizella pusilla
    # Count: 1
    Date:
    Observer: Robert Birrer
    Location: 130 Hopewell-Rocky Hill Road, Hopewell, New Jersey, US (40.395, -74.746)
  112. Dark-eyed Junco Junco hyemalis
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Princeton University campus
  113. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 1
    Date:
    Observer: Daniel Burgoyne
    Location: Pole Farm (Mercer County Park NW)
  114. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: Benjamin Weihe
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  115. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: JamEs ParRis
    Location: Pole Farm (Mercer County Park NW)
  116. Song Sparrow Melospiza melodia
    # Count: 3
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  117. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  118. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  119. Eastern Towhee Pipilo erythrophthalmus
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  120. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: WCAS Audubon
    Location: St. Michael's Farm Preserve
  121. Bobolink Dolichonyx oryzivorus
    # Count: 2
    Date:
    Observer: WCAS Audubon
    Location: St. Michael's Farm Preserve
  122. Eastern Meadowlark Sturnella magna
    # Count: 1
    Date:
    Observer: Robert Birrer
    Location: 130 Hopewell-Rocky Hill Road, Hopewell, New Jersey, US (40.395, -74.746)
  123. Orchard Oriole Icterus spurius
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  124. Baltimore Oriole Icterus galbula
    # Count: 3
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  125. Red-winged Blackbird Agelaius phoeniceus
    # Count: 7
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  126. Brown-headed Cowbird Molothrus ater
    # Count: 3
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  127. Rusty Blackbird Euphagus carolinus
    # Count: 1
    Date:
    Observer: Benjamin Weihe
    Location: Bouvant Drive
  128. Common Grackle Quiscalus quiscula
    # Count: 4
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  129. Ovenbird Seiurus aurocapilla
    # Count: 4
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  130. Worm-eating Warbler Helmitheros vermivorum
    # Count: 3
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  131. Louisiana Waterthrush Parkesia motacilla
    # Count: 2
    Date:
    Observer: Fairfax Hutter
    Location: Fiddler's Creek/Hollystone Preserve
  132. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Todd Frantz
    Location: Etra Lake Park and Arboretum
  133. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: Scott Lundquist
    Location: Baldpate Mountain--Ted Stiles Preserve
  134. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: David Magier
    Location: Charles H. Rogers Wildlife Refuge, Princeton, NJ (40.327424,-74.659694)
  135. Tennessee Warbler Leiothlypis peregrina
    # Count: 1
    Date:
    Observer: JamEs ParRis
    Location: Pole Farm (Mercer County Park NW)
  136. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Nancy Brooks
    Location: Pole Farm (Mercer County Park NW)
  137. Mourning Warbler Geothlypis philadelphia
    # Count: 1
    Date:
    Observer: John Collins
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  138. Kentucky Warbler Geothlypis formosa
    # Count: 1
    Date:
    Observer: Jim Myers
    Location: Baldpate Mountain--Ted Stiles Preserve
  139. Common Yellowthroat Geothlypis trichas
    # Count: 1
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  140. Hooded Warbler Setophaga citrina
    # Count: 2
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  141. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Robbinsville: volleyball: 42 Robbinsville Allentown Road, Robbinsville Township, New Jersey, US (40.214, -74.619)
  142. Cape May Warbler Setophaga tigrina
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  143. Northern Parula Setophaga americana
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  144. Magnolia Warbler Setophaga magnolia
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  145. Bay-breasted Warbler Setophaga castanea
    # Count: 2
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  146. Blackburnian Warbler Setophaga fusca
    # Count: 1
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  147. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: David Magier
    Location: Charles H. Rogers Wildlife Refuge, Princeton, NJ (40.327424,-74.659694)
  148. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 2
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  149. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Ken Walsh
    Location: Princeton Battle Monument, Princeton US-NJ 40.32885 a, -74.67534
  150. Black-throated Blue Warbler Setophaga caerulescens
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  151. Palm Warbler Setophaga palmarum
    # Count: 1
    Date:
    Observer: Ann Reichelderfer
    Location: Miry Run Natural Area
  152. Pine Warbler Setophaga pinus
    # Count: 1
    Date:
    Observer: Joe Melton
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  153. Yellow-rumped Warbler Setophaga coronata
    # Count: X
    Date:
    Observer: richard moran
    Location: Delaware and Raritan Canal SP--Dyson Tract Area
  154. Yellow-throated Warbler Setophaga dominica
    # Count: 1
    Date:
    Observer: David Dorini
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  155. Prairie Warbler Setophaga discolor
    # Count: 1
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve
  156. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  157. Canada Warbler Cardellina canadensis
    # Count: 1
    Date:
    Observer: Joe Melton
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  158. Wilson's Warbler Cardellina pusilla
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  159. Scarlet Tanager Piranga olivacea
    # Count: 1
    Date:
    Observer: Ben Hejna
    Location: Van Nest Wildlife Refuge
  160. Northern Cardinal Cardinalis cardinalis
    # Count: 4
    Date:
    Observer: Kevin Brown
    Location: Abbott Marshlands—south
  161. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 3
    Date:
    Observer: Sarang Gopalakrishnan
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  162. Blue Grosbeak Passerina caerulea
    # Count: 3
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  163. Indigo Bunting Passerina cyanea
    # Count: 4
    Date:
    Observer: Sharyn Magee
    Location: Baldpate Mountain--Ted Stiles Preserve

Exotic: Escapee (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: JamEs ParRis
    Location: Pole Farm (Mercer County Park NW)

Hybrids (1)

  1. Carolina x Black-capped Chickadee (hybrid) Poecile carolinensis x atricapillus
    # Count: 1
    Date:
    Observer: Fairfax Hutter
    Location: Mine Rd. bridge

Additional Taxa (14)

  1. goose sp. Anatidae (goose sp.)
    # Count: 12
    Date:
    Observer: Bill Pitman
    Location: Hamilton Veterans Park
  2. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 2
    Date:
    Observer: gretchen buxton
    Location: Mercer County Park
  3. gull sp. Larinae sp.
    # Count: 3
    Date:
    Observer: Anagha R
    Location: Mercer County Park
  4. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Chris Dean
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  5. Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/traillii
    # Count: 1
    Date:
    Observer: Lu Lu
    Location: Mountain Lakes Park
  6. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Princeton Institute Woods & Charles Rogers Wildlife Refuge
  7. American/Fish Crow Corvus brachyrhynchos/ossifragus
    # Count: X
    Date:
    Observer: Anonymous eBirder
    Location: Pole Farm (Mercer County Park NW)
  8. crow sp. Corvus sp. (crow sp.)
    # Count: 1
    Date:
    Observer: Robert Mercer
    Location: Baldpate Mountain--Ted Stiles Preserve
  9. Carolina/Black-capped Chickadee Poecile carolinensis/atricapillus
    # Count: 2
    Date:
    Observer: Nancy Burns
    Location: Old Mill Road Greenway
  10. Catharus sp. Catharus sp.
    # Count: 1
    Date:
    Observer: WCAS Audubon
    Location: Hillside Farm Preserve
  11. blackbird sp. Icteridae sp.
    # Count: X
    Date:
    Observer: richard moran
    Location: Delaware and Raritan Canal SP--Dyson Tract Area
  12. new world warbler sp. Parulidae sp.
    # Count: 2
    Date:
    Observer: DsE McEn
    Location: Delaware and Raritan Canal SP--Dyson Tract Area
  13. passerine sp. Passeriformes sp.
    # Count: 20
    Date:
    Observer: Diego Segura
    Location: Princeton University campus
  14. bird sp. Aves sp.
    # Count: 1
    Date:
    Observer: Anagha R
    Location: Mercer County Park