Birds in Iowa in August

Percent of complete checklists in Iowa that reported the bird during these weeks, 2016–2025 (17,514 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1American Goldfinch65%
2. 2Northern Cardinal55%
3. 3American Robin49%
4. 4Blue Jay49%
5. 5Mourning Dove48%
6. 6Gray Catbird45%
7. 7Black-capped Chickadee40%
8. 8Eastern Wood-Pewee38%
9. 9Barn Swallow38%
10. 10Downy Woodpecker37%
11. 11White-breasted Nuthatch37%
12. 12Northern House Wren35%
13. 13American Crow34%
14. 14Killdeer33%
15. 15Eastern Kingbird32%
16. 16House Sparrow32%
17. 17Turkey Vulture32%
18. 18Great Blue Heron30%
19. 19Indigo Bunting29%
20. 20Red-bellied Woodpecker28%
21. 21Song Sparrow26%
22. 22Red-headed Woodpecker25%
23. 23Ruby-throated Hummingbird25%
24. 24Red-winged Blackbird24%
25. 25Baltimore Oriole23%
26. 26House Finch22%
27. 27Canada Goose22%
28. 28Tree Swallow20%
29. 29Northern Flicker19%
30. 30Common Yellowthroat18%
31. 31Cedar Waxwing17%
32. 32European Starling17%
33. 33Mallard16%
34. 34Cliff Swallow15%
35. 35Chipping Sparrow14%
36. 36Wood Duck14%
37. 37Ring-billed Gull14%
38. 38Great Crested Flycatcher14%
39. 39Red-eyed Vireo14%
40. 40Eastern Bluebird13%
41. 41Hairy Woodpecker13%
42. 42American White Pelican12%
43. 43American Redstart12%
44. 44Belted Kingfisher12%
45. 45Great Egret11%
46. 46Dickcissel11%
47. 47Eastern Warbling Vireo11%
48. 48Rose-breasted Grosbeak10%

• Ruby-crowned Kingletfirst arrivals late August, peaks the second week of October
• Black-and-white Warblerfirst arrivals the second week of August, peaks early September
• Magnolia Warblerfirst arrivals mid August, peaks the second week of September
• Chestnut-sided Warblerfirst arrivals the second week of August, peaks early September
• Red-breasted Nuthatchfirst arrivals mid August, peaks late September
• Bay-breasted Warblerfirst arrivals mid August, peaks the second week of September
• Pileated Woodpeckerfirst arrivals mid August, peaks the second week of September
• Black-throated Green Warblerfirst arrivals late August, peaks the second week of September
• Blackburnian Warblerfirst arrivals mid August, peaks early September
• Broad-winged Hawkfirst arrivals the second week of August, peaks mid September
• Canada Warblerfirst arrivals mid August, peaks early September
• Philadelphia Vireofirst arrivals late August, peaks the second week of September

• Common Yellowthroatmost gone by the second week of August
• Indigo Buntingmost gone by mid August
• Song Sparrowmost gone by mid August
• Dickcisselmost gone by early August
• Chipping Sparrowmost gone by mid August
• Field Sparrowmost gone by late August
• Yellow-billed Cuckoomost gone by late August
• Purple Martinmost gone by late August
• Willow Flycatchermost gone by the second week of August
• Bell's Vireomost gone by late August
• Acadian Flycatchermost gone by early August
• Grasshopper Sparrowmost gone by early August

49. 49Bald Eagle10%
50. 50Red-tailed Hawk10%
51. 51Spotted Sandpiper9.7%
52. 52Field Sparrow9.6%
53. 53Least Sandpiper9.5%
54. 54Chimney Swift9.2%
55. 55Double-crested Cormorant9.2%
56. 56Pectoral Sandpiper8.8%
57. 57Eastern Phoebe8.6%
58. 58Eastern Towhee8.4%
59. 59Tufted Titmouse7.8%
60. 60Lesser Yellowlegs7.6%