Winter Birds in Colorado

Percent of complete checklists in Colorado that reported the bird during these weeks, 2016–2025 (295,802 checklists). It shows how likely you are to list the bird, not how many there are. Methods.

1. 1House Finch42%
2. 2Black-capped Chickadee39%
3. 3Northern Flicker38%
4. 4Dark-eyed Junco36%
5. 5Canada Goose36%
6. 6Black-billed Magpie33%
7. 7Mallard32%
8. 8American Crow30%
9. 9American Robin25%
10. 10Red-tailed Hawk24%
11. 11European Starling24%
12. 12Eurasian Collared-Dove22%
13. 13Common Goldeneye21%
14. 14Red-winged Blackbird21%
15. 15Blue Jay19%
16. 16Ring-billed Gull18%
17. 17Song Sparrow18%
18. 18Cackling Goose17%
19. 19Downy Woodpecker16%
20. 20Common Raven16%
21. 21White-breasted Nuthatch16%
22. 22House Sparrow15%
23. 23Rock Pigeon14%
24. 24American Goldfinch14%
25. 25Mountain Chickadee13%
26. 26Hooded Merganser13%
27. 27White-crowned Sparrow13%
28. 28Common Merganser12%
29. 29Bald Eagle12%
30. 30Gadwall11%
31. 31American Coot11%
32. 32Spotted Towhee11%
33. 33American Kestrel11%
34. 34Ring-necked Duck11%
35. 35American Wigeon11%
36. 36Bufflehead11%
37. 37Northern Shoveler10%

• European Starlingfirst arrivals late February, peaks the second week of May
• Double-crested Cormorantfirst arrivals late February, peaks late April
• Lesser Goldfinchfirst arrivals the second week of February, peaks the second week of August
• Cinnamon Tealfirst arrivals late February, peaks mid April
• Mountain Bluebirdfirst arrivals late February, peaks late March
• Horned Grebefirst arrivals late February, peaks the second week of April
• Red Crossbillfirst arrivals the second week of December, peaks late July

• American Cootmost gone by the second week of December
• Red-breasted Nuthatchmost gone by early January
• Belted Kingfishermost gone by early February
• Western Grebemost gone by early December
• Ruddy Duckmost gone by the second week of January
• Cedar Waxwingmost gone by mid January
• California Gullmost gone by mid December
• Common Loonmost gone by early December
• Wilson's Snipemost gone by the second week of February
• Sandhill Cranemost gone by early December
• American Pipitmost gone by late January
• Bonaparte's Gullmost gone by late January

38. 38Red-breasted Nuthatch9.7%
39. 39Belted Kingfisher9.6%
40. 40Townsend's Solitaire8.3%
41. 41Green-winged Teal8.2%
42. 42Steller's Jay7.7%
43. 43Woodhouse's Scrub-Jay7.7%
44. 44Bushtit6.3%
45. 45Pine Siskin6.2%
46. 46American Tree Sparrow6.0%
47. 47Great Blue Heron5.9%
48. 48Pygmy Nuthatch5.8%
49. 49Hairy Woodpecker5.5%
50. 50Northern Harrier5.4%
51. 51Lesser Scaup5.3%
52. 52Redhead5.0%
53. 53Mourning Dove4.7%
54. 54Pied-billed Grebe4.4%
55. 55Western Meadowlark3.7%
56. 56Killdeer3.6%
57. 57American Herring Gull3.5%
58. 58Brown Creeper3.3%
59. 59Great Horned Owl3.0%

60. 60Cassin's Finch3.0%