Summer Birds in Colorado

Percent of complete checklists in Colorado that reported the bird during these weeks, 2016–2025 (359,456 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1American Robin47%
2. 2House Finch37%
3. 3Broad-tailed Hummingbird35%
4. 4Mourning Dove34%
5. 5Northern Flicker32%
6. 6Red-winged Blackbird29%
7. 7Black-capped Chickadee27%
8. 8Northern House Wren27%
9. 9Barn Swallow24%
10. 10Mallard23%
11. 11American Crow22%
12. 12Black-billed Magpie22%
13. 13American Goldfinch21%
14. 14Eurasian Collared-Dove20%
15. 15Northern Yellow Warbler20%
16. 16Violet-green Swallow20%
17. 17Spotted Towhee19%
18. 18Blue Jay19%
19. 19Western Wood-Pewee18%
20. 20Canada Goose18%
21. 21Lesser Goldfinch18%
22. 22Song Sparrow17%
23. 23Common Grackle17%
24. 24Mountain Chickadee17%
25. 25Red-tailed Hawk16%
26. 26European Starling16%
27. 27White-breasted Nuthatch15%
28. 28House Sparrow15%
29. 29Western Kingbird15%
30. 30Common Raven15%
31. 31Western Meadowlark14%
32. 32Great Blue Heron14%
33. 33Double-crested Cormorant13%
34. 34Turkey Vulture13%
35. 35Chipping Sparrow13%
36. 36Cliff Swallow13%
37. 37Killdeer12%
38. 38Say's Phoebe12%
39. 39Bullock's Oriole11%
40. 40Tree Swallow11%
41. 41Pine Siskin11%
42. 42Downy Woodpecker11%
43. 43Dark-eyed Junco11%
44. 44Brown-headed Cowbird11%
45. 45Western Flycatcher11%
46. 46Steller's Jay10%

• Ring-billed Gullfirst arrivals mid July, peaks the second week of November
• American Goldfinchfirst arrivals late June, peaks the second week of August
• Gadwallfirst arrivals late August, peaks the second week of April
• Northern Shovelerfirst arrivals the second week of August, peaks the second week of April
• Green-winged Tealfirst arrivals early August, peaks early April
• American Wigeonfirst arrivals mid August, peaks early November
• Rufous Hummingbirdfirst arrivals early July, peaks early August
• Steller's Jayfirst arrivals the second week of July, peaks late September
• Red-breasted Nuthatchfirst arrivals the second week of August, peaks the second week of September
• Belted Kingfisherfirst arrivals mid August, peaks the second week of November
• Redheadfirst arrivals mid July, peaks the second week of March
• Orange-crowned Warblerfirst arrivals early August, peaks late September

• American Robinmost gone by mid July
• Red-winged Blackbirdmost gone by late June
• Common Gracklemost gone by mid July
• European Starlingmost gone by the second week of June
• Western Meadowlarkmost gone by late June
• Bullock's Oriolemost gone by mid July
• Song Sparrowmost gone by the second week of July
• Brown-headed Cowbirdmost gone by the second week of July
• Violet-green Swallowmost gone by the second week of August
• Killdeermost gone by the second week of June
• Great Blue Heronmost gone by mid June
• Tree Swallowmost gone by late July

47. 47Western Warbling Vireo9.5%
48. 48Western Tanager9.4%
49. 49Black-headed Grosbeak9.0%
50. 50Rock Pigeon8.7%
51. 51Yellow-rumped Warbler8.6%
52. 52American White Pelican8.4%
53. 53Pygmy Nuthatch8.1%
54. 54Red-breasted Nuthatch8.1%
55. 55Black-chinned Hummingbird7.6%
56. 56Gray Catbird7.5%
57. 57American Kestrel7.3%
58. 58Spotted Sandpiper7.3%
59. 59Lark Sparrow6.9%
60. 60Osprey6.9%