| Most Numerous Species | Spring Count Home | Summary by Year |
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| The list below summarizes the data for each species recorded on the count. Clicking the species' name will provide more detailed statistics, as well as a trend chart and tables of the actual count results for that species. |
| 1. | Snow Goose
DuPage County: Avg. of 1.7 in 3 counts. Fermilab Site: 1 seen in 2000 only. | 2. | Canada Goose
DuPage County: Avg. of 1653.6 in 25 counts. Fermilab Site: Avg. of 76.5 in 18 counts. |
| 3. | Mute Swan
DuPage County: Avg. of 2.7 in 19 counts. Fermilab Site: Not seen. | 4. | Wood Duck
DuPage County: Avg. of 135.2 in 25 counts. Fermilab Site: Avg. of 7.3 in 16 counts. |
| 5. | Gadwall
DuPage County: Avg. of 3.5 in 10 counts. Fermilab Site: 2 seen in 2014 only. | 6. | American Wigeon
DuPage County: Avg. of 1.7 in 6 counts. Fermilab Site: 2 seen in 2013 only. |
| 7. | American Black Duck
DuPage County: Avg. of 3.8 in 8 counts. Fermilab Site: 1 seen in 2007 only. | 8. | Mallard
DuPage County: Avg. of 904.8 in 25 counts. Fermilab Site: Avg. of 35.3 in 18 counts. |
| 9. | Blue-winged Teal
DuPage County: Avg. of 67.8 in 25 counts. Fermilab Site: Avg. of 12.2 in 16 counts. | 10. | Cinnamon Teal
DuPage County: 1 seen in 1998 only. Fermilab Site: Not seen. |
| 11. | Northern Shoveler
DuPage County: Avg. of 9.9 in 17 counts. Fermilab Site: Avg. of 5.5 in 4 counts. | 12. | Green-winged Teal
DuPage County: Avg. of 3.8 in 18 counts. Fermilab Site: Avg. of 2 in 3 counts. |
| 13. | Redhead
DuPage County: Avg. of 1.7 in 3 counts. Fermilab Site: Not seen. | 14. | Ring-necked Duck
DuPage County: Avg. of 4.6 in 15 counts. Fermilab Site: Not seen. |
| 15. | Lesser Scaup
DuPage County: Avg. of 3.9 in 12 counts. Fermilab Site: Not seen. | 16. | Bufflehead
DuPage County: Avg. of 3.3 in 8 counts. Fermilab Site: 5 seen in 2006 only. |
| 17. | Hooded Merganser
DuPage County: Avg. of 2.9 in 15 counts. Fermilab Site: Avg. of 1.3 in 3 counts. | 18. | Common Merganser
DuPage County: Avg. of 1.7 in 3 counts. Fermilab Site: Not seen. |
| 19. | Red-breasted Merganser
DuPage County: Avg. of 2.8 in 5 counts. Fermilab Site: Not seen. | 20. | Ruddy Duck
DuPage County: Avg. of 7.9 in 18 counts. Fermilab Site: Avg. of 1 in 3 counts. |
| 21. | Northern Bobwhite
DuPage County: Avg. of 1.5 in 2 counts. Fermilab Site: 1 seen in 2004 only. | 22. | Ring-necked Pheasant
DuPage County: Avg. of 34.9 in 22 counts. Fermilab Site: Avg. of 1.6 in 5 counts. |
| 23. | Wild Turkey
DuPage County: Avg. of 4.9 in 17 counts. Fermilab Site: 4 seen in 2002 only. | 24. | Common Loon
DuPage County: Avg. of 1.6 in 10 counts. Fermilab Site: Not seen. |
| 25. | Pied-billed Grebe
DuPage County: Avg. of 17.8 in 25 counts. Fermilab Site: Avg. of 1.7 in 10 counts. | 26. | Horned Grebe
DuPage County: Avg. of 2 in 3 counts. Fermilab Site: 1 seen in 2000 only. |
| 27. | Eared Grebe
DuPage County: 1 seen in 1991 only. Fermilab Site: Not seen. | 28. | Wood Stork
DuPage County: 1 seen in 2010 only. Fermilab Site: Not seen. |
| 29. | Double-crested Cormorant
DuPage County: Avg. of 116 in 25 counts. Fermilab Site: Avg. of 18.2 in 18 counts. | 30. | American White Pelican
DuPage County: Avg. of 5.5 in 2 counts. Fermilab Site: Not seen. |
| 31. | American Bittern
DuPage County: Avg. of 2.3 in 16 counts. Fermilab Site: Not seen. | 32. | Least Bittern
DuPage County: 1 seen in 1992 only. Fermilab Site: Not seen. |
| 33. | Great Blue Heron
DuPage County: Avg. of 225.1 in 25 counts. Fermilab Site: Avg. of 12.9 in 18 counts. | 34. | Great Egret
DuPage County: Avg. of 56.1 in 25 counts. Fermilab Site: Avg. of 3.2 in 17 counts. |
| 35. | Snowy Egret
DuPage County: Avg. of 1 in 2 counts. Fermilab Site: Not seen. | 36. | Little Blue Heron
DuPage County: 1 seen in 2014 only. Fermilab Site: Not seen. |
| 37. | Cattle Egret
DuPage County: Avg. of 3.3 in 7 counts. Fermilab Site: 1 seen in 1999 only. | 38. | Green Heron
DuPage County: Avg. of 32 in 25 counts. Fermilab Site: Avg. of 2.3 in 13 counts. |
| 39. | Black-crowned Night-Heron
DuPage County: Avg. of 10 in 25 counts. Fermilab Site: Avg. of 1.5 in 4 counts. | 40. | Yellow-crowned Night-Heron
DuPage County: 1 seen in 1997 only. Fermilab Site: Not seen. |
| 41. | White-faced Ibis
DuPage County: Avg. of 1 in 2 counts. Fermilab Site: Not seen. | 42. | Turkey Vulture
DuPage County: Avg. of 32.4 in 25 counts. Fermilab Site: Avg. of 3.2 in 13 counts. |
| 43. | Osprey
DuPage County: Avg. of 4.1 in 17 counts. Fermilab Site: Avg. of 2.3 in 6 counts. | 44. | Golden Eagle
DuPage County: 1 seen in 2014 only. Fermilab Site: Not seen. |
| 45. | Mississippi Kite
DuPage County: Avg. of 1 in 3 counts. Fermilab Site: Not seen. | 46. | Northern Harrier
DuPage County: Avg. of 2.6 in 19 counts. Fermilab Site: Avg. of 1.7 in 7 counts. |
| 47. | Sharp-shinned Hawk
DuPage County: Avg. of 6.4 in 25 counts. Fermilab Site: Avg. of 1 in 2 counts. | 48. | Cooper's Hawk
DuPage County: Avg. of 27 in 25 counts. Fermilab Site: Avg. of 1.8 in 12 counts. |
| 49. | Northern Goshawk
DuPage County: 1 seen in 2000 only. Fermilab Site: Not seen. | 50. | Bald Eagle
DuPage County: Avg. of 1.2 in 6 counts. Fermilab Site: 1 seen in 2013 only. |
| 51. | Red-shouldered Hawk
DuPage County: Avg. of 2 in 17 counts. Fermilab Site: Not seen. | 52. | Broad-winged Hawk
DuPage County: Avg. of 9 in 25 counts. Fermilab Site: Not seen. |
| 53. | Red-tailed Hawk
DuPage County: Avg. of 93.9 in 25 counts. Fermilab Site: Avg. of 7.6 in 17 counts. | 54. | Rough-legged Hawk
DuPage County: Avg. of 1.7 in 3 counts. Fermilab Site: Not seen. |
| 55. | Yellow Rail
DuPage County: Avg. of 1 in 2 counts. Fermilab Site: Not seen. | 56. | Black Rail
DuPage County: 1 seen in 2010 only. Fermilab Site: Not seen. |
| 57. | King Rail
DuPage County: 1 seen in 2005 only. Fermilab Site: Not seen. | 58. | Virginia Rail
DuPage County: Avg. of 5.3 in 24 counts. Fermilab Site: Avg. of 1.4 in 5 counts. |
| 59. | Sora
DuPage County: Avg. of 42.7 in 25 counts. Fermilab Site: Avg. of 3.8 in 15 counts. | 60. | Common Gallinule
DuPage County: Avg. of 2.4 in 9 counts. Fermilab Site: Not seen. |
| 61. | American Coot
DuPage County: Avg. of 72.4 in 25 counts. Fermilab Site: Avg. of 4 in 5 counts. | 62. | Sandhill Crane
DuPage County: Avg. of 4.6 in 22 counts. Fermilab Site: Avg. of 1.7 in 3 counts. |
| 63. | Semipalmated Plover
DuPage County: Avg. of 12 in 13 counts. Fermilab Site: Avg. of 8 in 3 counts. | 64. | Killdeer
DuPage County: Avg. of 104.3 in 25 counts. Fermilab Site: Avg. of 8.5 in 18 counts. |
| 65. | American Avocet
DuPage County: 2 seen in 1997 only. Fermilab Site: Not seen. | 66. | Spotted Sandpiper
DuPage County: Avg. of 47.1 in 25 counts. Fermilab Site: Avg. of 3.4 in 14 counts. |
| 67. | Solitary Sandpiper
DuPage County: Avg. of 69.9 in 25 counts. Fermilab Site: Avg. of 7.4 in 16 counts. | 68. | Greater Yellowlegs
DuPage County: Avg. of 11.1 in 21 counts. Fermilab Site: Avg. of 2.8 in 11 counts. |
| 69. | Lesser Yellowlegs
DuPage County: Avg. of 52.5 in 25 counts. Fermilab Site: Avg. of 21.6 in 15 counts. | 70. | Upland Sandpiper
DuPage County: Avg. of 4 in 4 counts. Fermilab Site: 2 seen in 2001 only. |
| 71. | Semipalmated Sandpiper
DuPage County: Avg. of 8.8 in 17 counts. Fermilab Site: Avg. of 4 in 2 counts. | 72. | Least Sandpiper
DuPage County: Avg. of 55.3 in 24 counts. Fermilab Site: Avg. of 31.3 in 6 counts. |
| 73. | White-rumped Sandpiper
DuPage County: Avg. of 1.5 in 2 counts. Fermilab Site: 2 seen in 2014 only. | 74. | Pectoral Sandpiper
DuPage County: Avg. of 15.9 in 22 counts. Fermilab Site: Avg. of 3.9 in 8 counts. |
| 75. | Dunlin
DuPage County: Avg. of 2.8 in 6 counts. Fermilab Site: 5 seen in 2014 only. | 76. | Stilt Sandpiper
DuPage County: 1 seen in 2013 only. Fermilab Site: 1 seen in 2013 only. |
| 77. | Short-billed Dowitcher
DuPage County: Avg. of 2.6 in 7 counts. Fermilab Site: 1 seen in 1999 only. | 78. | Long-billed Dowitcher
DuPage County: 1 seen in 1990 only. Fermilab Site: Not seen. |
| 79. | Wilson's Snipe
DuPage County: Avg. of 15.3 in 23 counts. Fermilab Site: Avg. of 7.3 in 7 counts. | 80. | American Woodcock
DuPage County: Avg. of 8.7 in 21 counts. Fermilab Site: Avg. of 3.3 in 3 counts. |
| 81. | Wilson's Phalarope
DuPage County: Avg. of 1.6 in 8 counts. Fermilab Site: Avg. of 2.7 in 3 counts. | 82. | Bonaparte's Gull
DuPage County: Avg. of 4 in 5 counts. Fermilab Site: Not seen. |
| 83. | Ring-billed Gull
DuPage County: Avg. of 208.4 in 25 counts. Fermilab Site: Avg. of 4.1 in 15 counts. | 84. | American Herring Gull
DuPage County: Avg. of 29.1 in 24 counts. Fermilab Site: Not seen. |
| 85. | Caspian Tern
DuPage County: Avg. of 12.9 in 12 counts. Fermilab Site: Avg. of 3 in 3 counts. | 86. | Black Tern
DuPage County: Avg. of 1.8 in 10 counts. Fermilab Site: 3 seen in 2009 only. |
| 87. | Common Tern
DuPage County: 5 seen in 1994 only. Fermilab Site: Not seen. | 88. | Forster's Tern
DuPage County: Avg. of 3.9 in 8 counts. Fermilab Site: Not seen. |
| 89. | Rock Pigeon
DuPage County: Avg. of 143.5 in 25 counts. Fermilab Site: Avg. of 6.4 in 16 counts. | 90. | Eurasian Collared-Dove
DuPage County: 2 seen in 2003 only. Fermilab Site: Not seen. |
| 91. | Mourning Dove
DuPage County: Avg. of 353.2 in 25 counts. Fermilab Site: Avg. of 9.9 in 18 counts. | 92. | Yellow-billed Cuckoo
DuPage County: Avg. of 2.3 in 15 counts. Fermilab Site: 1 seen in 2010 only. |
| 93. | Black-billed Cuckoo
DuPage County: Avg. of 3.2 in 16 counts. Fermilab Site: Not seen. | 94. | Eastern Screech-Owl
DuPage County: Avg. of 3.5 in 20 counts. Fermilab Site: 1 seen in 2011 only. |
| 95. | Great Horned Owl
DuPage County: Avg. of 17.2 in 25 counts. Fermilab Site: Avg. of 2.8 in 13 counts. | 96. | Barred Owl
DuPage County: Avg. of 2 in 14 counts. Fermilab Site: Avg. of 1 in 3 counts. |
| 97. | Common Nighthawk
DuPage County: Avg. of 12.3 in 12 counts. Fermilab Site: Avg. of 1.3 in 3 counts. | 98. | Whip-poor-will
DuPage County: Avg. of 1.1 in 7 counts. Fermilab Site: Not seen. |
| 99. | Chimney Swift
DuPage County: Avg. of 155.4 in 25 counts. Fermilab Site: Avg. of 3.3 in 11 counts. | 100. | Ruby-throated Hummingbird
DuPage County: Avg. of 7.2 in 19 counts. Fermilab Site: 2 seen in 2009 only. |
| 101. | Belted Kingfisher
DuPage County: Avg. of 14 in 25 counts. Fermilab Site: Avg. of 2 in 5 counts. | 102. | Red-headed Woodpecker
DuPage County: Avg. of 20.2 in 25 counts. Fermilab Site: Avg. of 1.7 in 6 counts. |
| 103. | Red-bellied Woodpecker
DuPage County: Avg. of 169.2 in 25 counts. Fermilab Site: Avg. of 4.8 in 18 counts. | 104. | Yellow-bellied Sapsucker
DuPage County: Avg. of 2.3 in 15 counts. Fermilab Site: Not seen. |
| 105. | Downy Woodpecker
DuPage County: Avg. of 166 in 25 counts. Fermilab Site: Avg. of 6.1 in 17 counts. | 106. | Hairy Woodpecker
DuPage County: Avg. of 31.4 in 25 counts. Fermilab Site: Avg. of 1.9 in 14 counts. |
| 107. | Northern Flicker
DuPage County: Avg. of 187.1 in 25 counts. Fermilab Site: Avg. of 7.8 in 18 counts. | 108. | Pileated Woodpecker
DuPage County: Avg. of 2.5 in 6 counts. Fermilab Site: Not seen. |
| 109. | American Kestrel
DuPage County: Avg. of 18 in 25 counts. Fermilab Site: Avg. of 1.8 in 9 counts. | 110. | Merlin
DuPage County: Avg. of 1 in 4 counts. Fermilab Site: Not seen. |
| 111. | Peregrine Falcon
DuPage County: Avg. of 1.4 in 11 counts. Fermilab Site: 2 seen in 2007 only. | 112. | Monk Parakeet
DuPage County: Avg. of 8.9 in 16 counts. Fermilab Site: Not seen. |
| 113. | Olive-sided Flycatcher
DuPage County: Avg. of 1.8 in 10 counts. Fermilab Site: Avg. of 1.5 in 2 counts. | 114. | Eastern Wood-Pewee
DuPage County: Avg. of 10.7 in 23 counts. Fermilab Site: Avg. of 1.7 in 7 counts. |
| 115. | Yellow-bellied Flycatcher
DuPage County: Avg. of 1 in 2 counts. Fermilab Site: Not seen. | 116. | Acadian Flycatcher
DuPage County: Avg. of 1.3 in 3 counts. Fermilab Site: Not seen. |
| 117. | Alder Flycatcher
DuPage County: Avg. of 1 in 3 counts. Fermilab Site: Not seen. | 118. | Willow Flycatcher
DuPage County: Avg. of 2.6 in 19 counts. Fermilab Site: Avg. of 1 in 3 counts. |
| 119. | Least Flycatcher
DuPage County: Avg. of 19.6 in 24 counts. Fermilab Site: Avg. of 1.8 in 12 counts. | 120. | Eastern Phoebe
DuPage County: Avg. of 34.6 in 25 counts. Fermilab Site: Avg. of 2.6 in 14 counts. |
| 121. | Great Crested Flycatcher
DuPage County: Avg. of 55.4 in 25 counts. Fermilab Site: Avg. of 2 in 16 counts. | 122. | Western Kingbird
DuPage County: 1 seen in 2010 only. Fermilab Site: Not seen. |
| 123. | Eastern Kingbird
DuPage County: Avg. of 72 in 25 counts. Fermilab Site: Avg. of 5.3 in 16 counts. | 124. | Loggerhead Shrike
DuPage County: 1 seen in 1990 only. Fermilab Site: Not seen. |
| 125. | White-eyed Vireo
DuPage County: Avg. of 4.4 in 23 counts. Fermilab Site: Not seen. | 126. | Bell's Vireo
DuPage County: Avg. of 2 in 5 counts. Fermilab Site: 1 seen in 2004 only. |
| 127. | Yellow-throated Vireo
DuPage County: Avg. of 18.2 in 25 counts. Fermilab Site: Avg. of 1.4 in 7 counts. | 128. | Blue-headed Vireo
DuPage County: Avg. of 18.1 in 25 counts. Fermilab Site: Avg. of 2.3 in 7 counts. |
| 129. | Warbling Vireo
DuPage County: Avg. of 81.6 in 25 counts. Fermilab Site: Avg. of 2.9 in 11 counts. | 130. | Philadelphia Vireo
DuPage County: Avg. of 4.3 in 20 counts. Fermilab Site: 1 seen in 2002 only. |
| 131. | Red-eyed Vireo
DuPage County: Avg. of 44.7 in 24 counts. Fermilab Site: Avg. of 2.6 in 11 counts. | 132. | Blue Jay
DuPage County: Avg. of 529.2 in 25 counts. Fermilab Site: Avg. of 15.8 in 18 counts. |
| 133. | American Crow
DuPage County: Avg. of 508.8 in 25 counts. Fermilab Site: Avg. of 11.2 in 16 counts. | 134. | Horned Lark
DuPage County: Avg. of 5.2 in 25 counts. Fermilab Site: Avg. of 2.5 in 16 counts. |
| 135. | Northern Rough-winged Swallow
DuPage County: Avg. of 137.8 in 25 counts. Fermilab Site: Avg. of 9.9 in 17 counts. | 136. | Purple Martin
DuPage County: Avg. of 14 in 22 counts. Fermilab Site: 1 seen in 2009 only. |
| 137. | Tree Swallow
DuPage County: Avg. of 593 in 25 counts. Fermilab Site: Avg. of 41.6 in 18 counts. | 138. | Bank Swallow
DuPage County: Avg. of 17.3 in 25 counts. Fermilab Site: Avg. of 3.7 in 11 counts. |
| 139. | Barn Swallow
DuPage County: Avg. of 393 in 25 counts. Fermilab Site: Avg. of 17.5 in 17 counts. | 140. | Cliff Swallow
DuPage County: Avg. of 6.6 in 17 counts. Fermilab Site: Avg. of 1.5 in 4 counts. |
| 141. | Black-capped Chickadee
DuPage County: Avg. of 400 in 25 counts. Fermilab Site: Avg. of 13.5 in 17 counts. | 142. | Tufted Titmouse
DuPage County: Avg. of 4.1 in 21 counts. Fermilab Site: Not seen. |
| 143. | Red-breasted Nuthatch
DuPage County: Avg. of 4.4 in 22 counts. Fermilab Site: Avg. of 1.5 in 2 counts. | 144. | White-breasted Nuthatch
DuPage County: Avg. of 87.3 in 25 counts. Fermilab Site: Avg. of 3.9 in 17 counts. |
| 145. | Brown Creeper
DuPage County: Avg. of 3.5 in 20 counts. Fermilab Site: Not seen. | 146. | House Wren
DuPage County: Avg. of 252.4 in 25 counts. Fermilab Site: Avg. of 10.9 in 18 counts. |
| 147. | Winter Wren
DuPage County: Avg. of 1.6 in 8 counts. Fermilab Site: Not seen. | 148. | Sedge Wren
DuPage County: Avg. of 9.5 in 22 counts. Fermilab Site: Avg. of 4 in 9 counts. |
| 149. | Marsh Wren
DuPage County: Avg. of 19.3 in 24 counts. Fermilab Site: Avg. of 2.7 in 10 counts. | 150. | Carolina Wren
DuPage County: Avg. of 2.3 in 16 counts. Fermilab Site: Not seen. |
| 151. | Blue-gray Gnatcatcher
DuPage County: Avg. of 219.6 in 25 counts. Fermilab Site: Avg. of 9.6 in 18 counts. | 152. | Golden-crowned Kinglet
DuPage County: Avg. of 1.8 in 5 counts. Fermilab Site: Not seen. |
| 153. | Ruby-crowned Kinglet
DuPage County: Avg. of 73.8 in 25 counts. Fermilab Site: Avg. of 2.7 in 15 counts. | 154. | Eastern Bluebird
DuPage County: Avg. of 79.9 in 25 counts. Fermilab Site: Avg. of 5.5 in 17 counts. |
| 155. | Veery
DuPage County: Avg. of 16.3 in 25 counts. Fermilab Site: Avg. of 3 in 10 counts. | 156. | Gray-cheeked Thrush
DuPage County: Avg. of 7.3 in 23 counts. Fermilab Site: Avg. of 1.8 in 9 counts. |
| 157. | Swainson's Thrush
DuPage County: Avg. of 34.9 in 25 counts. Fermilab Site: Avg. of 3.3 in 11 counts. | 158. | Hermit Thrush
DuPage County: Avg. of 9 in 24 counts. Fermilab Site: 1 seen in 2007 only. |
| 159. | Wood Thrush
DuPage County: Avg. of 35.9 in 25 counts. Fermilab Site: Avg. of 1.5 in 8 counts. | 160. | American Robin
DuPage County: Avg. of 1963.6 in 25 counts. Fermilab Site: Avg. of 48.7 in 18 counts. |
| 161. | Gray Catbird
DuPage County: Avg. of 284.7 in 25 counts. Fermilab Site: Avg. of 8.3 in 18 counts. | 162. | Northern Mockingbird
DuPage County: Avg. of 1.6 in 12 counts. Fermilab Site: 1 seen in 2004 only. |
| 163. | Brown Thrasher
DuPage County: Avg. of 72.7 in 25 counts. Fermilab Site: Avg. of 3.8 in 15 counts. | 164. | European Starling
DuPage County: Avg. of 1183.8 in 25 counts. Fermilab Site: Avg. of 24.5 in 18 counts. |
| 165. | American Pipit
DuPage County: Avg. of 3 in 7 counts. Fermilab Site: 4 seen in 2007 only. | 166. | Cedar Waxwing
DuPage County: Avg. of 141.3 in 24 counts. Fermilab Site: Avg. of 3 in 5 counts. |
| 167. | Ovenbird
DuPage County: Avg. of 42 in 25 counts. Fermilab Site: Avg. of 3.9 in 10 counts. | 168. | Worm-eating Warbler
DuPage County: Avg. of 1.3 in 7 counts. Fermilab Site: Not seen. |
| 169. | Louisiana Waterthrush
DuPage County: Avg. of 2.6 in 20 counts. Fermilab Site: Avg. of 1 in 3 counts. | 170. | Northern Waterthrush
DuPage County: Avg. of 62.3 in 25 counts. Fermilab Site: Avg. of 4.9 in 14 counts. |
| 171. | Blue-winged Warbler
DuPage County: Avg. of 21.8 in 25 counts. Fermilab Site: Avg. of 1.4 in 5 counts. | 172. | Golden-winged Warbler
DuPage County: Avg. of 16.2 in 23 counts. Fermilab Site: Avg. of 2 in 5 counts. |
| 173. | Black-and-white Warbler
DuPage County: Avg. of 66 in 25 counts. Fermilab Site: Avg. of 3.3 in 14 counts. | 174. | Prothonotary Warbler
DuPage County: Avg. of 4.9 in 21 counts. Fermilab Site: Not seen. |
| 175. | Tennessee Warbler
DuPage County: Avg. of 119.4 in 25 counts. Fermilab Site: Avg. of 3.5 in 12 counts. | 176. | Orange-crowned Warbler
DuPage County: Avg. of 8.2 in 24 counts. Fermilab Site: Avg. of 1.2 in 6 counts. |
| 177. | Nashville Warbler
DuPage County: Avg. of 129.4 in 25 counts. Fermilab Site: Avg. of 3.8 in 17 counts. | 178. | Connecticut Warbler
DuPage County: Avg. of 1.2 in 11 counts. Fermilab Site: Not seen. |
| 179. | Mourning Warbler
DuPage County: Avg. of 2.3 in 11 counts. Fermilab Site: Not seen. | 180. | Kentucky Warbler
DuPage County: Avg. of 1.6 in 7 counts. Fermilab Site: Not seen. |
| 181. | Common Yellowthroat
DuPage County: Avg. of 200 in 25 counts. Fermilab Site: Avg. of 13.3 in 18 counts. | 182. | Hooded Warbler
DuPage County: Avg. of 2.2 in 17 counts. Fermilab Site: Avg. of 1 in 2 counts. |
| 183. | American Redstart
DuPage County: Avg. of 47.8 in 25 counts. Fermilab Site: Avg. of 4.7 in 10 counts. | 184. | Cape May Warbler
DuPage County: Avg. of 16.8 in 23 counts. Fermilab Site: Avg. of 2.2 in 5 counts. |
| 185. | Cerulean Warbler
DuPage County: Avg. of 1.9 in 15 counts. Fermilab Site: Not seen. | 186. | Northern Parula
DuPage County: Avg. of 19.4 in 25 counts. Fermilab Site: Avg. of 1.5 in 6 counts. |
| 187. | Magnolia Warbler
DuPage County: Avg. of 30.8 in 25 counts. Fermilab Site: Avg. of 3.1 in 9 counts. | 188. | Bay-breasted Warbler
DuPage County: Avg. of 12.1 in 23 counts. Fermilab Site: Avg. of 2 in 3 counts. |
| 189. | Blackburnian Warbler
DuPage County: Avg. of 19.7 in 23 counts. Fermilab Site: Avg. of 2.1 in 8 counts. | 190. | Yellow Warbler
DuPage County: Avg. of 317.5 in 25 counts. Fermilab Site: Avg. of 10.4 in 17 counts. |
| 191. | Chestnut-sided Warbler
DuPage County: Avg. of 40.6 in 24 counts. Fermilab Site: Avg. of 2.3 in 8 counts. | 192. | Blackpoll Warbler
DuPage County: Avg. of 15.2 in 23 counts. Fermilab Site: Avg. of 1.2 in 5 counts. |
| 193. | Black-throated Blue Warbler
DuPage County: Avg. of 4.1 in 17 counts. Fermilab Site: 1 seen in 2009 only. | 194. | Palm Warbler
DuPage County: Avg. of 663.5 in 25 counts. Fermilab Site: Avg. of 36.7 in 18 counts. |
| 195. | Pine Warbler
DuPage County: Avg. of 7 in 24 counts. Fermilab Site: Not seen. | 196. | Yellow-rumped Warbler
DuPage County: Avg. of 905 in 25 counts. Fermilab Site: Avg. of 37.4 in 18 counts. |
| 197. | Yellow-throated Warbler
DuPage County: Avg. of 3.4 in 14 counts. Fermilab Site: Not seen. | 198. | Prairie Warbler
DuPage County: Avg. of 1.3 in 6 counts. Fermilab Site: Not seen. |
| 199. | Black-throated Green Warbler
DuPage County: Avg. of 90 in 25 counts. Fermilab Site: Avg. of 4.3 in 16 counts. | 200. | Canada Warbler
DuPage County: Avg. of 4.1 in 13 counts. Fermilab Site: 1 seen in 2003 only. |
| 201. | Wilson's Warbler
DuPage County: Avg. of 6.5 in 22 counts. Fermilab Site: 1 seen in 2014 only. | 202. | Yellow-breasted Chat
DuPage County: Avg. of 4.1 in 16 counts. Fermilab Site: Not seen. |
| 203. | Eastern Towhee
DuPage County: Avg. of 99 in 25 counts. Fermilab Site: Avg. of 3.7 in 14 counts. | 204. | American Tree Sparrow
DuPage County: Avg. of 2.7 in 3 counts. Fermilab Site: Not seen. |
| 205. | Chipping Sparrow
DuPage County: Avg. of 132.4 in 25 counts. Fermilab Site: Avg. of 4.8 in 17 counts. | 206. | Clay-colored Sparrow
DuPage County: Avg. of 3.1 in 16 counts. Fermilab Site: Avg. of 1.5 in 4 counts. |
| 207. | Field Sparrow
DuPage County: Avg. of 169.6 in 25 counts. Fermilab Site: Avg. of 10.3 in 18 counts. | 208. | Vesper Sparrow
DuPage County: Avg. of 3.6 in 22 counts. Fermilab Site: Avg. of 2 in 14 counts. |
| 209. | Lark Sparrow
DuPage County: 2 seen in 1996 only. Fermilab Site: Not seen. | 210. | Savannah Sparrow
DuPage County: Avg. of 105.8 in 25 counts. Fermilab Site: Avg. of 11.9 in 17 counts. |
| 211. | Grasshopper Sparrow
DuPage County: Avg. of 5.8 in 25 counts. Fermilab Site: Avg. of 2 in 6 counts. | 212. | Henslow's Sparrow
DuPage County: Avg. of 12 in 12 counts. Fermilab Site: Avg. of 2.4 in 5 counts. |
| 213. | Le Conte's Sparrow
DuPage County: Avg. of 1.5 in 2 counts. Fermilab Site: Not seen. | 214. | Fox Sparrow
DuPage County: Avg. of 1 in 8 counts. Fermilab Site: Not seen. |
| 215. | Song Sparrow
DuPage County: Avg. of 554.8 in 25 counts. Fermilab Site: Avg. of 17.6 in 18 counts. | 216. | Lincoln's Sparrow
DuPage County: Avg. of 14.4 in 25 counts. Fermilab Site: Avg. of 2.2 in 14 counts. |
| 217. | Swamp Sparrow
DuPage County: Avg. of 112.6 in 25 counts. Fermilab Site: Avg. of 11.4 in 17 counts. | 218. | White-throated Sparrow
DuPage County: Avg. of 305.2 in 25 counts. Fermilab Site: Avg. of 21.9 in 17 counts. |
| 219. | Harris's Sparrow
DuPage County: 1 seen in 1991 only. Fermilab Site: Not seen. | 220. | White-crowned Sparrow
DuPage County: Avg. of 131 in 25 counts. Fermilab Site: Avg. of 13.3 in 16 counts. |
| 221. | Dark-eyed Junco
DuPage County: Avg. of 1.5 in 13 counts. Fermilab Site: Not seen. | 222. | Summer Tanager
DuPage County: Avg. of 3.1 in 18 counts. Fermilab Site: Not seen. |
| 223. | Scarlet Tanager
DuPage County: Avg. of 53.3 in 24 counts. Fermilab Site: Avg. of 2.9 in 11 counts. | 224. | Northern Cardinal
DuPage County: Avg. of 594.8 in 25 counts. Fermilab Site: Avg. of 10.9 in 18 counts. |
| 225. | Rose-breasted Grosbeak
DuPage County: Avg. of 145.1 in 25 counts. Fermilab Site: Avg. of 4.1 in 16 counts. | 226. | Blue Grosbeak
DuPage County: Avg. of 1.5 in 4 counts. Fermilab Site: Not seen. |
| 227. | Indigo Bunting
DuPage County: Avg. of 154.4 in 25 counts. Fermilab Site: Avg. of 5.4 in 15 counts. | 228. | Dickcissel
DuPage County: Avg. of 2.5 in 4 counts. Fermilab Site: 1 seen in 2014 only. |
| 229. | Bobolink
DuPage County: Avg. of 102.7 in 25 counts. Fermilab Site: Avg. of 17.1 in 17 counts. | 230. | Red-winged Blackbird
DuPage County: Avg. of 3523.5 in 25 counts. Fermilab Site: Avg. of 95.8 in 18 counts. |
| 231. | Eastern Meadowlark
DuPage County: Avg. of 162.1 in 25 counts. Fermilab Site: Avg. of 18.5 in 18 counts. | 232. | Western Meadowlark
DuPage County: Avg. of 1 in 2 counts. Fermilab Site: Not seen. |
| 233. | Yellow-headed Blackbird
DuPage County: Avg. of 4.5 in 20 counts. Fermilab Site: Not seen. | 234. | Rusty Blackbird
DuPage County: Avg. of 1 in 3 counts. Fermilab Site: Not seen. |
| 235. | Brewer's Blackbird
DuPage County: Avg. of 2.5 in 2 counts. Fermilab Site: Not seen. | 236. | Common Grackle
DuPage County: Avg. of 877 in 25 counts. Fermilab Site: Avg. of 9.1 in 18 counts. |
| 237. | Brown-headed Cowbird
DuPage County: Avg. of 569.4 in 25 counts. Fermilab Site: Avg. of 24.9 in 18 counts. | 238. | Orchard Oriole
DuPage County: Avg. of 27.1 in 24 counts. Fermilab Site: Avg. of 1.2 in 5 counts. |
| 239. | Baltimore Oriole
DuPage County: Avg. of 263.4 in 25 counts. Fermilab Site: Avg. of 5.4 in 17 counts. | 240. | Purple Finch
DuPage County: Avg. of 6.1 in 21 counts. Fermilab Site: Not seen. |
| 241. | House Finch
DuPage County: Avg. of 104.2 in 25 counts. Fermilab Site: Avg. of 4.2 in 17 counts. | 242. | Pine Siskin
DuPage County: Avg. of 20.2 in 16 counts. Fermilab Site: Not seen. |
| 243. | American Goldfinch
DuPage County: Avg. of 951.2 in 25 counts. Fermilab Site: Avg. of 41.2 in 18 counts. | 244. | House Sparrow
DuPage County: Avg. of 440 in 25 counts. Fermilab Site: Avg. of 10.3 in 17 counts. |
| 245. | Individual Count
DuPage County: Avg. of 25480.9 in 25 counts. Fermilab Site: Avg. of 1007.6 in 18 counts. | 246. | Species Count
DuPage County: Avg. of 166.7 in 25 counts. Fermilab Site: Avg. of 91.4 in 18 counts. |