Birds in Illinois in August

Percent of complete checklists in Illinois that reported the bird during these weeks, 2016–2025 (89,704 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1American Goldfinch61%
2. 2Northern Cardinal56%
3. 3Mourning Dove52%
4. 4American Robin52%
5. 5Blue Jay39%
6. 6Barn Swallow38%
7. 7House Sparrow37%
8. 8Downy Woodpecker34%
9. 9Great Blue Heron32%
10. 10Black-capped Chickadee32%
11. 11Mallard31%
12. 12Canada Goose29%
13. 13Red-winged Blackbird28%
14. 14Gray Catbird28%
15. 15Killdeer28%
16. 16Song Sparrow28%
17. 17House Finch27%
18. 18European Starling27%
19. 19Ruby-throated Hummingbird27%
20. 20Eastern Wood-Pewee27%
21. 21Chimney Swift27%
22. 22White-breasted Nuthatch26%
23. 23American Crow24%
24. 24Cedar Waxwing24%
25. 25Great Egret23%
26. 26Red-bellied Woodpecker23%
27. 27Ring-billed Gull22%
28. 28Northern Flicker22%
29. 29Indigo Bunting22%
30. 30Eastern Kingbird21%
31. 31Double-crested Cormorant21%
32. 32Northern House Wren19%
33. 33Common Grackle16%
34. 34Turkey Vulture15%
35. 35Wood Duck15%
36. 36Red-tailed Hawk14%
37. 37Blue-gray Gnatcatcher13%
38. 38Common Yellowthroat13%
39. 39Spotted Sandpiper13%
40. 40Tree Swallow13%
41. 41Baltimore Oriole13%
42. 42Carolina Wren12%
43. 43Caspian Tern11%
44. 44Green Heron11%
45. 45Eastern Warbling Vireo11%
46. 46Rock Pigeon11%
47. 47Red-headed Woodpecker11%
48. 48Least Sandpiper10%

• Yellow-rumped Warblerfirst arrivals late August, peaks the second week of October
• American Redstartfirst arrivals early August, peaks the second week of September
• Swainson's Thrushfirst arrivals mid August, peaks the second week of September
• Magnolia Warblerfirst arrivals mid August, peaks mid September
• Northern Shovelerfirst arrivals late August, peaks late March
• Cooper's Hawkfirst arrivals late August, peaks late September
• Bay-breasted Warblerfirst arrivals mid August, peaks the second week of September
• Blackpoll Warblerfirst arrivals mid August, peaks mid September
• Belted Kingfisherfirst arrivals early August, peaks early October
• Red-breasted Nuthatchfirst arrivals mid August, peaks late September
• Lincoln's Sparrowfirst arrivals late August, peaks the second week of October
• Cape May Warblerfirst arrivals mid August, peaks the second week of September

• American Robinmost gone by mid August
• Red-winged Blackbirdmost gone by early August
• Baltimore Oriolemost gone by late August
• Song Sparrowmost gone by the second week of August
• Northern House Wrenmost gone by late August
• Indigo Buntingmost gone by mid August
• Tree Swallowmost gone by the second week of August
• Eastern Kingbirdmost gone by late August
• Great Crested Flycatchermost gone by late August
• Swamp Sparrowmost gone by early August
• Northern Rough-winged Swallowmost gone by mid August
• Field Sparrowmost gone by late August

49. 49Tufted Titmouse9.9%
50. 50Purple Martin9.8%
51. 51Chipping Sparrow9.6%
52. 52Lesser Yellowlegs9.3%
53. 53Red-eyed Vireo9.2%
54. 54Hairy Woodpecker8.8%
55. 55Field Sparrow8.8%
56. 56Eastern Bluebird8.6%
57. 57Belted Kingfisher8.6%
58. 58Solitary Sandpiper8.2%
59. 59American Herring Gull8.0%
60. 60Eastern Phoebe7.9%