Spring Birds in Colorado

Percent of complete checklists in Colorado that reported the bird during these weeks, 2016–2025 (451,570 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1American Robin55%
2. 2Red-winged Blackbird47%
3. 3House Finch43%
4. 4Mallard43%
5. 5Canada Goose39%
6. 6Northern Flicker38%
7. 7Black-capped Chickadee32%
8. 8European Starling32%
9. 9Mourning Dove29%
10. 10Black-billed Magpie29%
11. 11American Crow28%
12. 12Eurasian Collared-Dove26%
13. 13Western Meadowlark25%
14. 14Common Grackle25%
15. 15Red-tailed Hawk24%
16. 16Song Sparrow24%
17. 17Blue Jay23%
18. 18Killdeer19%
19. 19Spotted Towhee19%
20. 20Gadwall19%
21. 21American Goldfinch18%
22. 22Great Blue Heron18%
23. 23House Sparrow16%
24. 24Common Raven16%
25. 25Dark-eyed Junco16%
26. 26Say's Phoebe16%
27. 27Northern House Wren16%
28. 28Barn Swallow16%
29. 29Double-crested Cormorant15%
30. 30Yellow-rumped Warbler15%
31. 31Downy Woodpecker15%
32. 32Northern Shoveler13%
33. 33Northern Yellow Warbler13%
34. 34American Coot13%
35. 35White-crowned Sparrow13%
36. 36White-breasted Nuthatch13%
37. 37Tree Swallow12%
38. 38Broad-tailed Hummingbird12%
39. 39Turkey Vulture12%
40. 40Brown-headed Cowbird12%
41. 41Rock Pigeon12%
42. 42Green-winged Teal11%
43. 43Ring-billed Gull10%
44. 44American White Pelican10%

• American Robinfirst arrivals mid March, peaks mid May
• Red-winged Blackbirdfirst arrivals early March, peaks early May
• Mourning Dovefirst arrivals mid April, peaks the second week of May
• Broad-tailed Hummingbirdfirst arrivals mid April, peaks late July
• Northern Yellow Warblerfirst arrivals late April, peaks late May
• Northern House Wrenfirst arrivals mid April, peaks mid May
• Common Gracklefirst arrivals mid March, peaks the second week of May
• Yellow-rumped Warblerfirst arrivals mid March, peaks early May
• Barn Swallowfirst arrivals the second week of April, peaks late August
• Western Meadowlarkfirst arrivals mid March, peaks late April
• Bullock's Oriolefirst arrivals late April, peaks mid May
• Song Sparrowfirst arrivals early March, peaks early May

• Canada Goosemost gone by mid May
• Dark-eyed Juncomost gone by early April
• Ring-billed Gullmost gone by mid April
• Gadwallmost gone by mid May
• Common Goldeneyemost gone by early April
• Cackling Goosemost gone by the second week of March
• Northern Shovelermost gone by the second week of May
• Green-winged Tealmost gone by the second week of May
• American Wigeonmost gone by early May
• Buffleheadmost gone by early May
• Hooded Mergansermost gone by the second week of April
• Common Mergansermost gone by late April

45. 45American Kestrel9.8%
46. 46Chipping Sparrow9.7%
47. 47Bullock's Oriole9.6%
48. 48Mountain Chickadee9.3%
49. 49Western Kingbird9.1%
50. 50Violet-green Swallow9.0%
51. 51Pine Siskin8.9%
52. 52American Wigeon8.7%
53. 53Bufflehead8.7%
54. 54Blue-winged Teal8.7%
55. 55Lesser Scaup8.2%
56. 56Bald Eagle8.1%
57. 57Osprey7.8%
58. 58Cinnamon Teal7.8%
59. 59Belted Kingfisher7.6%
60. 60Common Merganser7.6%