Birds in Delaware in September

Percent of complete checklists in Delaware that reported the bird during these weeks, 2016–2025 (14,794 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1Carolina Wren57%
2. 2Northern Cardinal56%
3. 3Blue Jay51%
4. 4Carolina Chickadee49%
5. 5Mourning Dove47%
6. 6Gray Catbird43%
7. 7Turkey Vulture42%
8. 8American Goldfinch39%
9. 9Tufted Titmouse39%
10. 10Red-bellied Woodpecker37%
11. 11Downy Woodpecker37%
12. 12American Crow36%
13. 13American Robin33%
14. 14Laughing Gull29%
15. 15Northern Flicker28%
16. 16Great Blue Heron27%
17. 17House Finch27%
18. 18American Redstart26%
19. 19European Starling25%
20. 20Common Yellowthroat25%
21. 21Canada Goose25%
22. 22Osprey24%
23. 23Great Egret22%
24. 24White-breasted Nuthatch22%
25. 25Red-eyed Vireo22%
26. 26Double-crested Cormorant22%
27. 27Ruby-throated Hummingbird22%
28. 28Northern Mockingbird22%
29. 29Eastern Wood-Pewee21%
30. 30Bald Eagle21%
31. 31Tree Swallow19%
32. 32Snowy Egret19%
33. 33Black-and-white Warbler18%
34. 34American Herring Gull17%
35. 35Eastern Bluebird16%
36. 36Forster's Tern16%
37. 37Pileated Woodpecker15%
38. 38Red-winged Blackbird15%
39. 39Black Vulture15%
40. 40Song Sparrow15%
41. 41Northern Parula14%
42. 42Northern House Wren14%
43. 43Magnolia Warbler14%
44. 44Chipping Sparrow13%
45. 45Belted Kingfisher13%
46. 46Chimney Swift13%
47. 47Mallard13%
48. 48Hairy Woodpecker12%
49. 49Ring-billed Gull12%
50. 50Eastern Towhee12%
51. 51House Sparrow12%
52. 52Eastern Phoebe12%
53. 53Greater Yellowlegs11%
54. 54Caspian Tern11%
55. 55Blue Grosbeak11%

• Blue Jayfirst arrivals the second week of September, peaks early October
• White-throated Sparrowfirst arrivals late September, peaks early November
• Red-bellied Woodpeckerfirst arrivals the second week of September, peaks the second week of October
• Yellow-rumped Warblerfirst arrivals mid September, peaks mid October
• Northern Flickerfirst arrivals mid September, peaks the second week of October
• Ruby-crowned Kingletfirst arrivals the second week of September, peaks mid October
• Golden-crowned Kingletfirst arrivals late September, peaks mid October
• Swamp Sparrowfirst arrivals mid September, peaks late October
• Dunlinfirst arrivals mid September, peaks mid May
• Northern Pintailfirst arrivals mid September, peaks early March
• Boat-tailed Gracklefirst arrivals mid September, peaks late May
• Palm Warblerfirst arrivals early September, peaks the second week of October

• American Goldfinchmost gone by mid September
• Ospreymost gone by late September
• Great Crested Flycatchermost gone by early September
• Blue-gray Gnatcatchermost gone by the second week of September
• Ruby-throated Hummingbirdmost gone by late September
• Eastern Wood-Peweemost gone by late September
• Semipalmated Sandpipermost gone by the second week of September
• Semipalmated Plovermost gone by late September
• Blue Grosbeakmost gone by mid September
• Short-billed Dowitchermost gone by early September
• Least Sandpipermost gone by the second week of September
• Green Heronmost gone by the second week of September

56. 56White-eyed Vireo9.9%
57. 57Great Black-backed Gull9.6%
58. 58Fish Crow9.4%
59. 59Cooper's Hawk9.3%
60. 60Brown Thrasher9.1%