| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Canada Goose | 49 | 2951 | 1085 | 4085 | 0 | 4085 | 740 (7 Apr) | 45 | 39 | 7 Mar | 31 May | ||||
| 2. | Lesser Canada Goose | 0 | 2 | 0 | 2 | 0 | 2 | 1 (12 Apr) | 2 | 2 | 12 Apr | 14 Apr | ||||
| 3. | Snow Goose | 0 | 69 | 0 | 69 | 2 | 67 | 40 (13 Apr) | 3 | 3 | 13 Apr | 17 Apr | ||||
| 4. | Trumpeter Swan | 22 | 55 | 18 | 95 | 2 | 93 | 13 (5 Apr) | 19 | 16 | 3 Mar | 30 May | ||||
| 5. | Tundra/Trumpeter Swan | 0 | 48 | 0 | 48 | 1 | 47 | 11 (11 Apr) | 9 | 8 | 3 Apr | 27 Apr | ||||
| 6. | Tundra Swan | 0 | 68 | 4 | 72 | 0 | 72 | 33 (14 Apr) | 6 | 5 | 12 Apr | 2 May | ||||
| 7. | Wood Duck | 0 | 3 | 4 | 7 | 0 | 7 | 3 (27 Apr) | 3 | 3 | 27 Apr | 11 May | ||||
| 8. | Shoveler | 0 | 6 | 0 | 6 | 0 | 6 | 6 (27 Apr) | 1 | 1 | 27 Apr | 27 Apr | ||||
| 9. | Gadwall | 0 | 2 | 0 | 2 | 0 | 2 | 2 (12 Apr) | 1 | 1 | 12 Apr | 12 Apr | ||||
| 10. | Mallard | 21 | 521 | 4 | 546 | 0 | 546 | 107 (11 Apr) | 16 | 14 | 30 Mar | 1 May | ||||
| 11. | Black Duck | 0 | 1 | 0 | 1 | 0 | 1 | 1 (13 Apr) | 1 | 1 | 13 Apr | 13 Apr | ||||
| 12. | Pintail | 0 | 15 | 0 | 15 | 0 | 15 | 13 (13 Apr) | 2 | 2 | 12 Apr | 13 Apr | ||||
| 13. | duck sp. | 0 | 686 | 20 | 706 | 6 | 700 | 241 (27 Apr) | 16 | 14 | 11 Apr | 21 May | ||||
| 14. | Ring-necked Duck | 0 | 4 | 0 | 4 | 0 | 4 | 4 (12 Apr) | 1 | 1 | 12 Apr | 12 Apr | ||||
| 15. | Aythya sp. | 0 | 109 | 26 | 135 | 0 | 135 | 109 (27 Apr) | 2 | 2 | 27 Apr | 12 May | ||||
| 16. | Goldeneye | 0 | 64 | 0 | 64 | 0 | 64 | 42 (30 Apr) | 3 | 3 | 3 Apr | 30 Apr | ||||
| 17. | Hooded Merganser | 0 | 9 | 1 | 10 | 0 | 10 | 9 (11 Apr) | 2 | 2 | 11 Apr | 19 May | ||||
| 18. | Goosander | 1 | 94 | 0 | 95 | 1 | 94 | 20 (13 Apr) | 16 | 14 | 8 Mar | 28 Apr | ||||
| 19. | Red-breasted Merganser | 1 | 129 | 200 | 330 | 0 | 330 | 85 (27 Apr) | 22 | 19 | 22 Mar | 21 May | ||||
| 20. | Chimney Swift | 0 | 0 | 29 | 29 | 0 | 29 | 22 (15 May) | 7 | 6 | 11 May | 21 May | ||||
| 21. | Ruby-throated Hummingbird | 0 | 0 | 5 | 5 | 0 | 5 | 1 (11 May) | 6 | 5 | 11 May | 21 May | ||||
| 22. | Mourning Dove | 0 | 2 | 4 | 6 | 0 | 6 | 3 (10 May) | 3 | 3 | 10 Apr | 10 May | ||||
| 23. | Sandhill Crane | 0 | 134 | 48 | 182 | 16 | 166 | 24 (13 Apr) | 33 | 28 | 3 Apr | 25 May | ||||
| 24. | Killdeer | 0 | 23 | 6 | 29 | 2 | 27 | 7 (27 Apr) | 17 | 15 | 3 Apr | 27 May | ||||
| 25. | Wilson's Snipe | 0 | 7 | 0 | 7 | 5 | 2 | 2 (12 Apr) | 5 | 4 | 12 Apr | 22 Apr | ||||
| 26. | Solitary Sandpiper | 0 | 0 | 1 | 1 | 0 | 1 | 1 (11 May) | 1 | 1 | 11 May | 11 May | ||||
| 27. | Greater Yellowlegs | 0 | 13 | 0 | 13 | 0 | 13 | 13 (27 Apr) | 1 | 1 | 27 Apr | 27 Apr | ||||
| 28. | Bonaparte's Gull | 0 | 0 | 493 | 493 | 0 | 493 | 180 (9 May) | 3 | 3 | 9 May | 21 May | ||||
| 29. | Ring-billed Gull | 0 | 34 | 0 | 34 | 0 | 34 | 30 (1 Apr) | 2 | 2 | 1 Apr | 22 Apr | ||||
| 30. | Glaucous Gull | 0 | 1 | 0 | 1 | 0 | 1 | 1 (12 Apr) | 1 | 1 | 12 Apr | 12 Apr | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Lesser Black-backed Gull | 0 | 1 | 0 | 1 | 0 | 1 | 1 (29 Apr) | 1 | 1 | 29 Apr | 29 Apr | ||||
| 32. | Great Northern Diver | 0 | 219 | 247 | 466 | 5 | 461 | 91 (27 Apr) | 42 | 36 | 12 Apr | 30 May | ||||
| 33. | Double-crested Cormorant | 0 | 107 | 324 | 431 | 13 | 418 | 57 (11 May) | 36 | 31 | 9 Apr | 30 May | ||||
| 34. | Great White Egret | 0 | 2 | 0 | 2 | 2 | 0 | 2 (10 Apr) | 1 | 1 | 10 Apr | 10 Apr | ||||
| 35. | Great Blue Heron | 0 | 12 | 9 | 21 | 2 | 19 | 4 (13 Apr) | 15 | 13 | 2 Apr | 27 May | ||||
| 36. | American White Pelican | 0 | 821 | 1033 | 1854 | 128 | 1726 | 167 (3 May) | 43 | 37 | 10 Apr | 28 May | ||||
| 37. | Turkey Vulture | 1 | 2813 | 399 | 3213 | 0 | 3213 | 433 (12 Apr) | 56 | 48 | 26 Mar | 28 May | ||||
| 38. | Osprey | 0 | 51 | 55 | 106 | 0 | 106 | 24 (27 Apr) | 27 | 23 | 11 Apr | 26 May | ||||
| 39. | Golden Eagle | 99 | 14 | 2 | 115 | 0 | 115 | 22 (20 Mar) | 30 | 26 | 2 Mar | 9 May | ||||
| 40. | Sharp-shinned Hawk | 2 | 1061 | 889 | 1952 | 0 | 1952 | 373 (8 May) | 53 | 46 | 22 Mar | 29 May | ||||
| 41. | Cooper's Hawk | 2 | 23 | 13 | 38 | 0 | 38 | 3 (14 Apr) | 27 | 23 | 6 Mar | 25 May | ||||
| 42. | Northern Harrier | 0 | 65 | 22 | 87 | 0 | 87 | 12 (27 Apr) | 30 | 26 | 3 Apr | 18 May | ||||
| 43. | Bald Eagle | 1997 | 1721 | 1226 | 4944 | 0 | 4944 | 308 (3 Apr) | 94 | 81 | 2 Mar | 31 May | ||||
| 44. | Red-shouldered Hawk | 0 | 3 | 0 | 3 | 0 | 3 | 1 (7 Apr) | 3 | 3 | 7 Apr | 24 Apr | ||||
| 45. | Broad-winged Hawk | 0 | 673 | 7179 | 7852 | 0 | 7852 | 1593 (9 May) | 37 | 32 | 23 Apr | 31 May | ||||
| 46. | Swainson's Hawk | 0 | 1 | 2 | 3 | 0 | 3 | 1 (18 Apr) | 3 | 3 | 18 Apr | 25 May | ||||
| 47. | Red-tailed Hawk | 94 | 2149 | 217 | 2460 | 0 | 2460 | 616 (7 Apr) | 73 | 63 | 9 Mar | 31 May | ||||
| 48. | Rough-legged Buzzard | 1 | 298 | 25 | 324 | 0 | 324 | 75 (24 Apr) | 36 | 31 | 7 Mar | 15 May | ||||
| 49. | buzzard sp. | 0 | 4 | 0 | 4 | 0 | 4 | 2 (14 Apr) | 3 | 3 | 14 Apr | 27 Apr | ||||
| 50. | raptor sp. | 2 | 16 | 6 | 24 | 0 | 24 | 6 (26 Apr) | 14 | 12 | 20 Mar | 17 May | ||||
| 51. | Belted Kingfisher | 0 | 12 | 8 | 20 | 1 | 19 | 4 (27 Apr) | 15 | 13 | 10 Apr | 14 May | ||||
| 52. | Yellow-bellied Sapsucker | 0 | 4 | 0 | 4 | 2 | 2 | 1 (12 Apr) | 5 | 4 | 12 Apr | 21 Apr | ||||
| 53. | Northern Flicker | 0 | 1 | 0 | 1 | 1 | 0 | 1 (10 Apr) | 1 | 1 | 10 Apr | 10 Apr | ||||
| 54. | Northern Flicker (Yellow-shafted) | 0 | 149 | 18 | 167 | 56 | 111 | 39 (17 Apr) | 22 | 19 | 8 Apr | 11 May | ||||
| 55. | American Kestrel | 1 | 70 | 20 | 91 | 0 | 91 | 14 (12 Apr) | 29 | 25 | 23 Mar | 13 May | ||||
| 56. | Merlin | 1 | 41 | 11 | 53 | 0 | 53 | 5 (10 Apr) | 28 | 24 | 2 Mar | 21 May | ||||
| 57. | Peregrine | 0 | 14 | 15 | 29 | 0 | 29 | 3 (3 Apr) | 26 | 22 | 3 Apr | 16 May | ||||
| 58. | Eastern Phoebe | 0 | 2 | 0 | 2 | 1 | 1 | 1 (10 Apr) | 2 | 2 | 10 Apr | 12 Apr | ||||
| 59. | Olive-sided Flycatcher | 0 | 0 | 1 | 1 | 0 | 1 | 1 (27 May) | 1 | 1 | 27 May | 27 May | ||||
| 60. | Eastern Kingbird | 0 | 0 | 2 | 2 | 1 | 1 | 2 (21 May) | 1 | 1 | 21 May | 21 May | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Red-eyed Vireo | 0 | 0 | 2 | 2 | 0 | 2 | 2 (15 May) | 1 | 1 | 15 May | 15 May | ||||
| 62. | Blue Jay | 0 | 2 | 1122 | 1124 | 46 | 1078 | 450 (11 May) | 21 | 18 | 25 Apr | 31 May | ||||
| 63. | American Crow | 45 | 0 | 0 | 45 | 0 | 45 | 12 (14 Mar) | 8 | 7 | 3 Mar | 28 Mar | ||||
| 64. | Raven | 173 | 134 | 81 | 388 | 0 | 388 | 46 (30 Mar) | 60 | 52 | 2 Mar | 26 May | ||||
| 65. | Waxwing | 1764 | 1564 | 4 | 3332 | 568 | 2764 | 600 (9 Apr) | 23 | 20 | 13 Mar | 5 May | ||||
| 66. | Cedar Waxwing | 123 | 224 | 37 | 384 | 95 | 289 | 111 (22 Apr) | 20 | 17 | 11 Mar | 28 May | ||||
| 67. | Shore Lark | 6 | 1 | 0 | 7 | 0 | 7 | 6 (27 Mar) | 2 | 2 | 27 Mar | 3 Apr | ||||
| 68. | Tree Swallow | 0 | 26 | 35 | 61 | 9 | 52 | 10 (27 Apr) | 17 | 15 | 11 Apr | 19 May | ||||
| 69. | Purple Martin | 0 | 1 | 4 | 5 | 0 | 5 | 3 (19 May) | 3 | 3 | 30 Apr | 19 May | ||||
| 70. | Swallow | 0 | 0 | 3 | 3 | 0 | 3 | 1 (4 May) | 3 | 3 | 4 May | 16 May | ||||
| 71. | Cliff Swallow | 0 | 0 | 16 | 16 | 0 | 16 | 11 (19 May) | 3 | 3 | 16 May | 21 May | ||||
| 72. | swallow sp. | 0 | 0 | 6 | 6 | 0 | 6 | 5 (15 May) | 2 | 2 | 15 May | 16 May | ||||
| 73. | Golden-crowned Kinglet | 0 | 1 | 0 | 1 | 1 | 0 | 1 (17 Apr) | 1 | 1 | 17 Apr | 17 Apr | ||||
| 74. | Eastern Bluebird | 0 | 1 | 1 | 2 | 0 | 2 | 1 (11 Apr) | 2 | 2 | 11 Apr | 15 May | ||||
| 75. | American Robin | 1 | 3774 | 6 | 3781 | 2957 | 824 | 1980 (21 Apr) | 28 | 24 | 25 Mar | 16 May | ||||
| 76. | sparrow sp. | 0 | 46 | 7 | 53 | 53 | 0 | 46 (21 Apr) | 2 | 2 | 21 Apr | 11 May | ||||
| 77. | Evening Grosbeak | 0 | 25 | 0 | 25 | 0 | 25 | 25 (29 Apr) | 1 | 1 | 29 Apr | 29 Apr | ||||
| 78. | Pine Grosbeak | 34 | 0 | 0 | 34 | 0 | 34 | 21 (10 Mar) | 5 | 4 | 6 Mar | 15 Mar | ||||
| 79. | Purple Finch | 0 | 46 | 27 | 73 | 27 | 46 | 15 (11 May) | 21 | 18 | 3 Apr | 11 May | ||||
| 80. | House Finch | 0 | 2 | 0 | 2 | 2 | 0 | 2 (9 Apr) | 1 | 1 | 9 Apr | 9 Apr | ||||
| 81. | Mealy Redpoll | 59 | 1 | 0 | 60 | 1 | 59 | 30 (5 Mar) | 7 | 6 | 5 Mar | 10 Apr | ||||
| 82. | American Goldfinch | 22 | 149 | 181 | 352 | 114 | 238 | 40 (18 May) | 37 | 32 | 2 Mar | 23 May | ||||
| 83. | Pine Siskin | 1 | 19 | 6 | 26 | 10 | 16 | 7 (11 Apr) | 15 | 13 | 13 Mar | 19 May | ||||
| 84. | Chipping Sparrow | 0 | 0 | 48 | 48 | 45 | 3 | 40 (11 May) | 6 | 5 | 10 May | 21 May | ||||
| 85. | Fox Sparrow (Red) | 0 | 311 | 0 | 311 | 309 | 2 | 311 (21 Apr) | 1 | 1 | 21 Apr | 21 Apr | ||||
| 86. | American Tree Sparrow | 0 | 21 | 0 | 21 | 21 | 0 | 19 (21 Apr) | 2 | 2 | 17 Apr | 21 Apr | ||||
| 87. | Dark-eyed Junco | 0 | 50 | 0 | 50 | 16 | 34 | 32 (8 Apr) | 6 | 5 | 8 Apr | 25 Apr | ||||
| 88. | White-throated Sparrow | 0 | 1 | 1 | 2 | 1 | 1 | 1 (21 Apr) | 2 | 2 | 21 Apr | 11 May | ||||
| 89. | Baltimore Oriole | 0 | 0 | 3 | 3 | 2 | 1 | 2 (19 May) | 2 | 2 | 12 May | 19 May | ||||
| 90. | Red-winged Blackbird | 0 | 183 | 37 | 220 | 151 | 69 | 145 (17 Apr) | 16 | 14 | 9 Apr | 16 May | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | Brown-headed Cowbird | 0 | 8 | 42 | 50 | 31 | 19 | 16 (3 May) | 9 | 8 | 21 Apr | 22 May | ||||
| 92. | Rusty Blackbird | 0 | 497 | 10 | 507 | 459 | 48 | 350 (21 Apr) | 14 | 12 | 17 Apr | 9 May | ||||
| 93. | Brewer's Blackbird | 0 | 4 | 0 | 4 | 4 | 0 | 4 (21 Apr) | 1 | 1 | 21 Apr | 21 Apr | ||||
| 94. | blackbird sp. | 0 | 41 | 2 | 43 | 41 | 2 | 41 (17 Apr) | 2 | 2 | 17 Apr | 2 May | ||||
| 95. | Common Grackle | 1 | 294 | 124 | 419 | 72 | 347 | 173 (27 Apr) | 26 | 22 | 24 Mar | 16 May | ||||
| 96. | Black-and-white Warbler | 0 | 0 | 3 | 3 | 3 | 0 | 3 (11 May) | 1 | 1 | 11 May | 11 May | ||||
| 97. | Tennessee Warbler | 0 | 0 | 19 | 19 | 18 | 1 | 11 (19 May) | 5 | 4 | 15 May | 19 May | ||||
| 98. | Orange-crowned Warbler | 0 | 0 | 1 | 1 | 0 | 1 | 1 (9 May) | 1 | 1 | 9 May | 9 May | ||||
| 99. | Nashville Warbler | 0 | 0 | 28 | 28 | 26 | 2 | 17 (11 May) | 6 | 5 | 11 May | 19 May | ||||
| 100. | American Redstart | 0 | 0 | 2 | 2 | 0 | 2 | 2 (16 May) | 1 | 1 | 16 May | 16 May | ||||
| 101. | Cape May Warbler | 0 | 0 | 2 | 2 | 2 | 0 | 1 (18 May) | 2 | 2 | 18 May | 19 May | ||||
| 102. | Magnolia Warbler | 0 | 0 | 4 | 4 | 3 | 1 | 2 (18 May) | 3 | 3 | 18 May | 20 May | ||||
| 103. | Blackburnian Warbler | 0 | 0 | 3 | 3 | 3 | 0 | 3 (18 May) | 1 | 1 | 18 May | 18 May | ||||
| 104. | American Yellow Warbler | 0 | 0 | 8 | 8 | 6 | 2 | 3 (19 May) | 5 | 4 | 11 May | 21 May | ||||
| 105. | Chestnut-sided Warbler | 0 | 0 | 1 | 1 | 0 | 1 | 1 (21 May) | 1 | 1 | 21 May | 21 May | ||||
| 106. | Palm Warbler | 0 | 0 | 9 | 9 | 6 | 3 | 3 (11 May) | 6 | 5 | 11 May | 21 May | ||||
| 107. | Yellow-rumped Warbler (Myrtle) | 0 | 91 | 64 | 155 | 118 | 37 | 37 (11 May) | 29 | 25 | 3 Apr | 21 May | ||||
| 108. | Black-throated Green Warbler | 0 | 0 | 1 | 1 | 0 | 1 | 1 (16 May) | 1 | 1 | 16 May | 16 May | ||||
| 109. | Scarlet Tanager | 0 | 0 | 2 | 2 | 0 | 2 | 2 (23 May) | 1 | 1 | 23 May | 23 May | ||||
| 110. | Rose-breasted Grosbeak | 0 | 0 | 2 | 2 | 0 | 2 | 2 (16 May) | 1 | 1 | 16 May | 16 May | ||||
| 111. | Indigo Bunting | 0 | 0 | 1 | 1 | 0 | 1 | 1 (21 May) | 1 | 1 | 21 May | 21 May | ||||
| 112. | warbler sp. | 0 | 0 | 57 | 57 | 46 | 11 | 28 (11 May) | 6 | 5 | 11 May | 19 May | ||||
| Other species | ||||||||||||||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Common Green Darner | 0 | 3 | 2 | 5 | 0 | 5 | 3 (12 Apr) | 3 | 3 | 12 Apr | 15 May | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 4523 | 22917 | 15685 | 43125 | 5513 | 37612 | 100 | 86 | ||||||||
| Observation hours | 208:28 | 212:38 | 212:32 | 633:38 | ||||||||||||
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