WhenToBird

Birding spot · Boulder County, Colorado

Birding at Kohler Reservoir: What You'll See Each Week

In November, the birds most often reported at Kohler Reservoir are Spotted Towhee (90%), Black-billed Magpie (87%), and American Robin (75%). It is busiest in spring, when 62 species turn up on at least 1 in 20 checklists, and species counts peak in early August (73 species). 130 species have been reported here across 1,037 complete checklists from 342 birders.

Species by week

020406080Jan 1-7: low data (7 checklists)Jan 8-14: low data (6 checklists)Jan 15-21: low data (5 checklists)Jan 22-31: low data (8 checklists)Feb 1-7: low data (2 checklists)Feb 8-14: low data (2 checklists)Feb 15-21: low data (5 checklists)Feb 22-28: low data (5 checklists)Mar 1-7: low data (5 checklists)Mar 8-14: low data (7 checklists)Mar 15-21: low data (7 checklists)Mar 22-31: 46 species on 5%+ of 13 checklistsApr 1-7: 41 species on 5%+ of 17 checklistsApr 8-14: 49 species on 5%+ of 19 checklistsApr 15-21: 48 species on 5%+ of 22 checklistsApr 22-30: 54 species on 5%+ of 35 checklistsMay 1-7: 50 species on 5%+ of 88 checklistsMay 8-14: 54 species on 5%+ of 81 checklistsMay 15-21: 67 species on 5%+ of 128 checklistsMay 22-31: 62 species on 5%+ of 104 checklistsJun 1-7: 70 species on 5%+ of 59 checklistsJun 8-14: 55 species on 5%+ of 45 checklistsJun 15-21: 62 species on 5%+ of 20 checklistsJun 22-30: 58 species on 5%+ of 23 checklistsJul 1-7: 59 species on 5%+ of 22 checklistsJul 8-14: 62 species on 5%+ of 17 checklistsJul 15-21: 57 species on 5%+ of 22 checklistsJul 22-31: 50 species on 5%+ of 23 checklistsAug 1-7: 73 species on 5%+ of 17 checklistsAug 8-14: 61 species on 5%+ of 15 checklistsAug 15-21: 52 species on 5%+ of 21 checklistsAug 22-31: 58 species on 5%+ of 32 checklistsSep 1-7: 62 species on 5%+ of 11 checklistsSep 8-14: 59 species on 5%+ of 14 checklistsSep 15-21: 62 species on 5%+ of 13 checklistsSep 22-30: 42 species on 5%+ of 24 checklistsOct 1-7: low data (9 checklists)Oct 8-14: 25 species on 5%+ of 10 checklistsOct 15-21: 34 species on 5%+ of 11 checklistsOct 22-31: low data (9 checklists)Nov 1-7: low data (7 checklists)Nov 8-14: low data (6 checklists)Nov 15-21: low data (5 checklists)Nov 22-30: low data (8 checklists)Dec 1-7: low data (0 checklists)Dec 8-14: low data (7 checklists)Dec 15-21: low data (9 checklists)Dec 22-31: 32 species on 5%+ of 12 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Number of species reported on at least 5% of complete checklists, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

In November: what to expect

  1. 1Spotted Towhee90%
  2. 2Black-billed Magpie87%
  3. 3American Robin75%
  4. 4Broad-tailed Hummingbird73%
  5. 5Steller's Jay69%
  6. 6House Finch64%
  7. 7Black-capped Chickadee62%
  8. 8Northern House Wren54%
  9. 9Yellow-breasted Chat46%
  10. 10Northern Flicker43%
  11. 11Black-headed Grosbeak41%
  12. 12Blue Jay40%
  13. 13Common Raven37%
  14. 14Gray Catbird36%
  15. 15Turkey Vulture36%

Share of complete checklists at this spot that reported the bird in November. The sparkline is the whole year, with this month highlighted.

Season by season

Winter 30 species

  1. Black-billed Magpie94%
  2. Steller's Jay74%
  3. Black-capped Chickadee71%
  4. American Robin60%
  5. Dark-eyed Junco56%

Spring 62 species

  1. Spotted Towhee95%
  2. Black-billed Magpie94%
  3. American Robin86%
  4. Broad-tailed Hummingbird82%
  5. Steller's Jay69%

Summer 62 species

  1. Spotted Towhee96%
  2. Broad-tailed Hummingbird91%
  3. Black-billed Magpie75%
  4. American Robin73%
  5. House Finch72%

Fall 43 species

  1. Black-billed Magpie88%
  2. Steller's Jay84%
  3. Spotted Towhee74%
  4. Black-capped Chickadee72%
  5. House Finch61%

Specialties

Birds reported far more often here than across Colorado.

Nearby spots

Frequency is the share of complete checklists at this location that listed the bird, 2016–2025. Busy places report more of everything, and the weekly chart counts species on at least 5% of checklists so a few stray reports do not inflate it. How to read it.