Also present
Totals Cape Henlopen SP - Herring Point (DE) 2025
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Pale-bellied Brent Goose | 4 | 9 | 13 | 4 | 9 | 9 ( 5 May) | 29 | 2 | 1 Apr | 5 May | ||||
| 2. | Canada Goose | 14 | 0 | 14 | 0 | 14 | 9 (23 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 3. | Mute Swan | 3 | 0 | 3 | 3 | 0 | 3 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 4. | Wood Duck | 2 | 0 | 2 | 0 | 2 | 2 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 5. | Blue-winged Teal | 8 | 0 | 8 | 0 | 8 | 8 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 6. | Shoveler | 4 | 0 | 4 | 0 | 4 | 4 (16 Apr) | 14 | 1 | 16 Apr | 16 Apr | ||||
| 7. | Gadwall | 6 | 0 | 6 | 0 | 6 | 6 (16 Apr) | 14 | 1 | 16 Apr | 16 Apr | ||||
| 8. | American Wigeon | 35 | 0 | 35 | 0 | 35 | 35 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 9. | Mallard | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 10. | Black Duck | 25 | 0 | 25 | 0 | 25 | 24 ( 1 Apr) | 29 | 2 | 1 Apr | 17 Apr | ||||
| 11. | Pintail | 2 | 0 | 2 | 0 | 2 | 2 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 12. | Green-winged Teal | 38 | 0 | 38 | 12 | 26 | 37 ( 1 Apr) | 29 | 2 | 1 Apr | 16 Apr | ||||
| 13. | Ring-necked Duck | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 14. | Lesser Scaup | 10 | 0 | 10 | 0 | 10 | 5 (16 Apr) | 43 | 3 | 2 Apr | 17 Apr | ||||
| 15. | Harlequin Duck | 2 | 0 | 2 | 0 | 2 | 2 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 16. | Surf Scoter | 282 | 31 | 313 | 0 | 313 | 85 (17 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 17. | Black Scoter | 297 | 51 | 348 | 0 | 348 | 183 ( 1 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 18. | Surf/Black Scoter | 16 | 17 | 33 | 0 | 33 | 17 ( 5 May) | 29 | 2 | 17 Apr | 5 May | ||||
| 19. | Long-tailed Duck | 3 | 0 | 3 | 0 | 3 | 2 ( 1 Apr) | 29 | 2 | 1 Apr | 23 Apr | ||||
| 20. | Bufflehead | 3 | 0 | 3 | 0 | 3 | 3 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 21. | Red-breasted Merganser | 49 | 4 | 53 | 3 | 50 | 23 ( 1 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 22. | Ruby-throated Hummingbird | 3 | 1 | 4 | 0 | 4 | 1 (16 Apr) | 57 | 4 | 16 Apr | 6 May | ||||
| 23. | Mourning Dove | 1 | 0 | 1 | 0 | 1 | 1 (16 Apr) | 14 | 1 | 16 Apr | 16 Apr | ||||
| 24. | Slavonian Grebe | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 25. | American Oystercatcher | 7 | 0 | 7 | 0 | 7 | 5 ( 2 Apr) | 29 | 2 | 1 Apr | 2 Apr | ||||
| 26. | Grey Plover | 13 | 64 | 77 | 9 | 68 | 39 ( 5 May) | 71 | 5 | 16 Apr | 6 May | ||||
| 27. | American Golden Plover | 1 | 0 | 1 | 0 | 1 | 1 (17 Apr) | 14 | 1 | 17 Apr | 17 Apr | ||||
| 28. | Killdeer | 1 | 1 | 2 | 0 | 2 | 1 ( 1 Apr) | 29 | 2 | 1 Apr | 5 May | ||||
| 29. | Semipalmated Plover | 0 | 12 | 12 | 0 | 12 | 11 ( 5 May) | 29 | 2 | 5 May | 6 May | ||||
| 30. | Piping Plover | 2 | 0 | 2 | 0 | 2 | 2 (17 Apr) | 14 | 1 | 17 Apr | 17 Apr | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Hudsonian Whimbrel | 5 | 1 | 6 | 1 | 5 | 5 (23 Apr) | 29 | 2 | 23 Apr | 6 May | ||||
| 32. | Short-billed Dowitcher | 8 | 156 | 164 | 1 | 163 | 107 ( 6 May) | 43 | 3 | 23 Apr | 6 May | ||||
| 33. | Spotted Sandpiper | 0 | 2 | 2 | 0 | 2 | 2 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 34. | Solitary Sandpiper | 1 | 1 | 2 | 0 | 2 | 1 (23 Apr) | 29 | 2 | 23 Apr | 6 May | ||||
| 35. | Lesser Yellowlegs | 20 | 8 | 28 | 6 | 22 | 11 (17 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 36. | Willet (Eastern) | 73 | 28 | 101 | 2 | 99 | 64 (23 Apr) | 71 | 5 | 16 Apr | 6 May | ||||
| 37. | Greater Yellowlegs | 40 | 5 | 45 | 2 | 43 | 27 (17 Apr) | 86 | 6 | 1 Apr | 6 May | ||||
| 38. | Turnstone | 0 | 5 | 5 | 0 | 5 | 5 ( 6 May) | 14 | 1 | 6 May | 6 May | ||||
| 39. | Knot | 0 | 1 | 1 | 0 | 1 | 1 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 40. | small wader | 2 | 12 | 14 | 0 | 14 | 12 ( 5 May) | 43 | 3 | 2 Apr | 5 May | ||||
| 41. | Sanderling | 3 | 45 | 48 | 1 | 47 | 37 ( 6 May) | 43 | 3 | 16 Apr | 6 May | ||||
| 42. | Dunlin | 8 | 18 | 26 | 0 | 26 | 18 ( 5 May) | 43 | 3 | 16 Apr | 5 May | ||||
| 43. | Purple Sandpiper | 11 | 0 | 11 | 0 | 11 | 11 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 44. | Least Sandpiper | 5 | 0 | 5 | 0 | 5 | 5 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 45. | Pectoral Sandpiper | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 46. | Calidris sp. | 4 | 0 | 4 | 0 | 4 | 4 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 47. | Semipalmated Sandpiper | 0 | 5 | 5 | 0 | 5 | 5 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 48. | Black Skimmer | 1 | 63 | 64 | 11 | 53 | 32 ( 6 May) | 43 | 3 | 23 Apr | 6 May | ||||
| 49. | Least Tern | 10 | 35 | 45 | 2 | 43 | 25 ( 5 May) | 43 | 3 | 23 Apr | 6 May | ||||
| 50. | Gull-billed Tern | 0 | 5 | 5 | 0 | 5 | 3 ( 6 May) | 29 | 2 | 5 May | 6 May | ||||
| 51. | Caspian Tern | 1 | 14 | 15 | 7 | 8 | 12 ( 5 May) | 43 | 3 | 17 Apr | 6 May | ||||
| 52. | Forster's Tern | 91 | 36 | 127 | 14 | 113 | 40 (17 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 53. | Common Tern | 0 | 14 | 14 | 2 | 12 | 11 ( 5 May) | 29 | 2 | 5 May | 6 May | ||||
| 54. | sterna sp. | 1 | 0 | 1 | 1 | 0 | 1 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 55. | Royal Tern | 61 | 28 | 89 | 5 | 84 | 44 (23 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 56. | Bonaparte's Gull | 21 | 9 | 30 | 9 | 21 | 18 (17 Apr) | 71 | 5 | 1 Apr | 5 May | ||||
| 57. | Laughing Gull | 432 | 0 | 432 | 0 | 432 | 198 (23 Apr) | 57 | 4 | 1 Apr | 23 Apr | ||||
| 58. | Ring-billed Gull | 102 | 2 | 104 | 3 | 101 | 55 (17 Apr) | 86 | 6 | 1 Apr | 6 May | ||||
| 59. | Herring Gull | 106 | 94 | 200 | 93 | 107 | 75 ( 5 May) | 71 | 5 | 1 Apr | 6 May | ||||
| 60. | Great Black-backed Gull | 2 | 4 | 6 | 4 | 2 | 4 ( 6 May) | 29 | 2 | 1 Apr | 6 May | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Lesser Black-backed Gull | 28 | 136 | 164 | 136 | 28 | 70 ( 5 May) | 100 | 7 | 1 Apr | 6 May | ||||
| 62. | Iceland Gull | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 63. | skua sp. | 0 | 1 | 1 | 1 | 0 | 1 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 64. | Red-throated Diver | 310 | 5 | 315 | 292 | 23 | 281 ( 1 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 65. | Great Northern Diver | 163 | 5 | 168 | 4 | 164 | 63 (16 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 66. | Gannet | 830 | 14 | 844 | 0 | 844 | 641 ( 2 Apr) | 86 | 6 | 1 Apr | 6 May | ||||
| 67. | Double-crested Cormorant | 6587 | 124 | 6711 | 49 | 6662 | 5336 (16 Apr) | 100 | 7 | 1 Apr | 6 May | ||||
| 68. | White Ibis | 168 | 31 | 199 | 31 | 168 | 65 (16 Apr) | 86 | 6 | 2 Apr | 6 May | ||||
| 69. | Glossy Ibis | 34 | 35 | 69 | 0 | 69 | 35 ( 5 May) | 57 | 4 | 1 Apr | 5 May | ||||
| 70. | Tricolored Heron | 1 | 1 | 2 | 0 | 2 | 1 (17 Apr) | 29 | 2 | 17 Apr | 5 May | ||||
| 71. | Snowy Egret | 16 | 16 | 32 | 1 | 31 | 13 ( 6 May) | 86 | 6 | 2 Apr | 6 May | ||||
| 72. | Great White Egret | 11 | 1 | 12 | 1 | 11 | 6 (16 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 73. | Great Blue Heron | 15 | 2 | 17 | 0 | 17 | 10 (16 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 74. | Brown Pelican | 25 | 0 | 25 | 15 | 10 | 14 (23 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 75. | Osprey | 6 | 0 | 6 | 0 | 6 | 6 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 76. | Sharp-shinned Hawk | 1 | 0 | 1 | 1 | 0 | 1 (16 Apr) | 14 | 1 | 16 Apr | 16 Apr | ||||
| 77. | Cooper's Hawk | 2 | 0 | 2 | 0 | 2 | 1 ( 2 Apr) | 29 | 2 | 2 Apr | 16 Apr | ||||
| 78. | Northern Harrier | 8 | 0 | 8 | 0 | 8 | 6 (16 Apr) | 29 | 2 | 16 Apr | 17 Apr | ||||
| 79. | Bald Eagle | 9 | 0 | 9 | 2 | 7 | 4 (16 Apr) | 57 | 4 | 1 Apr | 17 Apr | ||||
| 80. | Red-shouldered Hawk | 1 | 0 | 1 | 0 | 1 | 1 (17 Apr) | 14 | 1 | 17 Apr | 17 Apr | ||||
| 81. | Red-tailed Hawk | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 82. | Red-bellied Woodpecker | 1 | 0 | 1 | 0 | 1 | 1 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 83. | Northern Flicker | 3 | 0 | 3 | 0 | 3 | 3 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 84. | American Kestrel | 62 | 0 | 62 | 2 | 60 | 56 (16 Apr) | 57 | 4 | 1 Apr | 17 Apr | ||||
| 85. | Merlin | 6 | 3 | 9 | 2 | 7 | 2 (16 Apr) | 71 | 5 | 16 Apr | 6 May | ||||
| 86. | Peregrine | 2 | 0 | 2 | 1 | 1 | 1 (16 Apr) | 29 | 2 | 16 Apr | 17 Apr | ||||
| 87. | Eastern Phoebe | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 88. | Eastern Kingbird | 0 | 2 | 2 | 1 | 1 | 2 ( 6 May) | 14 | 1 | 6 May | 6 May | ||||
| 89. | Blue Jay | 2 | 13 | 15 | 8 | 7 | 8 ( 5 May) | 43 | 3 | 23 Apr | 6 May | ||||
| 90. | Shore Lark | 2 | 0 | 2 | 0 | 2 | 2 (16 Apr) | 14 | 1 | 16 Apr | 16 Apr | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | Sand Martin | 1 | 0 | 1 | 0 | 1 | 1 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 92. | Tree Swallow | 38 | 0 | 38 | 0 | 38 | 19 (16 Apr) | 57 | 4 | 1 Apr | 23 Apr | ||||
| 93. | Purple Martin | 31 | 0 | 31 | 4 | 27 | 15 (16 Apr) | 57 | 4 | 1 Apr | 23 Apr | ||||
| 94. | Northern Rough-winged Swallow | 5 | 1 | 6 | 0 | 6 | 3 (16 Apr) | 57 | 4 | 1 Apr | 5 May | ||||
| 95. | Swallow | 104 | 31 | 135 | 2 | 133 | 48 (17 Apr) | 86 | 6 | 1 Apr | 6 May | ||||
| 96. | Golden-crowned Kinglet | 1 | 0 | 1 | 0 | 1 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 97. | Blue-grey Gnatcatcher | 1 | 0 | 1 | 0 | 1 | 1 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| 98. | Northern Mockingbird | 4 | 0 | 4 | 0 | 4 | 3 (23 Apr) | 29 | 2 | 16 Apr | 23 Apr | ||||
| 99. | Eastern Bluebird | 5 | 0 | 5 | 2 | 3 | 2 (16 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 100. | American Robin | 16 | 0 | 16 | 0 | 16 | 16 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 101. | House Finch | 6 | 0 | 6 | 0 | 6 | 3 (17 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 102. | American Goldfinch | 84 | 1 | 85 | 0 | 85 | 53 (16 Apr) | 71 | 5 | 1 Apr | 6 May | ||||
| 103. | Red-winged Blackbird | 10 | 0 | 10 | 0 | 10 | 4 ( 2 Apr) | 43 | 3 | 2 Apr | 23 Apr | ||||
| 104. | Brown-headed Cowbird | 78 | 1 | 79 | 0 | 79 | 45 (16 Apr) | 86 | 6 | 1 Apr | 6 May | ||||
| 105. | Common Grackle | 37 | 0 | 37 | 0 | 37 | 29 (16 Apr) | 29 | 2 | 1 Apr | 16 Apr | ||||
| 106. | Boat-tailed Grackle | 3 | 6 | 9 | 3 | 6 | 6 ( 6 May) | 29 | 2 | 16 Apr | 6 May | ||||
| 107. | Northern Waterthrush | 0 | 1 | 1 | 0 | 1 | 1 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 108. | Palm Warbler (Yellow) | 2 | 0 | 2 | 1 | 1 | 1 (16 Apr) | 29 | 2 | 16 Apr | 17 Apr | ||||
| 109. | Pine Warbler | 6 | 0 | 6 | 0 | 6 | 3 ( 1 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 110. | Myrtle Warbler | 7 | 0 | 7 | 0 | 7 | 3 ( 1 Apr) | 43 | 3 | 1 Apr | 23 Apr | ||||
| 111. | Prairie Warbler | 0 | 1 | 1 | 1 | 0 | 1 ( 6 May) | 14 | 1 | 6 May | 6 May | ||||
| 112. | Blue Grosbeak | 1 | 1 | 2 | 0 | 2 | 1 (23 Apr) | 29 | 2 | 23 Apr | 5 May | ||||
| 113. | Indigo Bunting | 0 | 1 | 1 | 0 | 1 | 1 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| 114. | warbler sp. | 0 | 1 | 1 | 0 | 1 | 1 ( 5 May) | 14 | 1 | 5 May | 5 May | ||||
| Other species | |||||||||||||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Bottle-Nosed Dolphin | 2 | 0 | 2 | 2 | 0 | 2 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| 2. | Grey seal | 1 | 0 | 1 | 1 | 0 | 1 ( 1 Apr) | 14 | 1 | 1 Apr | 1 Apr | ||||
| Other species | |||||||||||||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Variegated Fritillary | 0 | 1 | 1 | 0 | 1 | 1 ( 6 May) | 14 | 1 | 6 May | 6 May | ||||
| 2. | American Lady | 3 | 0 | 3 | 0 | 3 | 3 (23 Apr) | 14 | 1 | 23 Apr | 23 Apr | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 10585 | 1216 | 11801 | 758 | 11043 | 100 | 7 | ||||||||
| Observation hours | 28:09 | 12:00 | 40:09 | ||||||||||||
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