WhenToBird

Birding spot · Douglas County, Colorado

Birding at Chatfield State Park (Archer): What You'll See Each Week

In November, the birds most often reported at Chatfield State Park (Archer) are American Coot (69%), Common Loon (63%), and Western Grebe (63%). It is busiest in spring, when 67 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (91 species). 173 species have been reported here across 953 complete checklists from 434 birders.

Species by week

020406080100Jan 1-7: 24 species on 5%+ of 11 checklistsJan 8-14: low data (3 checklists)Jan 15-21: low data (0 checklists)Jan 22-31: low data (0 checklists)Feb 1-7: low data (2 checklists)Feb 8-14: low data (1 checklists)Feb 15-21: low data (1 checklists)Feb 22-28: low data (4 checklists)Mar 1-7: 51 species on 5%+ of 13 checklistsMar 8-14: low data (6 checklists)Mar 15-21: low data (7 checklists)Mar 22-31: 46 species on 5%+ of 28 checklistsApr 1-7: 58 species on 5%+ of 14 checklistsApr 8-14: 58 species on 5%+ of 16 checklistsApr 15-21: 64 species on 5%+ of 17 checklistsApr 22-30: 63 species on 5%+ of 29 checklistsMay 1-7: 77 species on 5%+ of 17 checklistsMay 8-14: 91 species on 5%+ of 18 checklistsMay 15-21: 74 species on 5%+ of 17 checklistsMay 22-31: 83 species on 5%+ of 19 checklistsJun 1-7: low data (5 checklists)Jun 8-14: low data (3 checklists)Jun 15-21: 55 species on 5%+ of 10 checklistsJun 22-30: 58 species on 5%+ of 10 checklistsJul 1-7: low data (3 checklists)Jul 8-14: low data (1 checklists)Jul 15-21: low data (3 checklists)Jul 22-31: low data (6 checklists)Aug 1-7: 54 species on 5%+ of 17 checklistsAug 8-14: low data (6 checklists)Aug 15-21: low data (9 checklists)Aug 22-31: 52 species on 5%+ of 37 checklistsSep 1-7: 67 species on 5%+ of 19 checklistsSep 8-14: 63 species on 5%+ of 21 checklistsSep 15-21: 53 species on 5%+ of 22 checklistsSep 22-30: 52 species on 5%+ of 33 checklistsOct 1-7: 51 species on 5%+ of 23 checklistsOct 8-14: 75 species on 5%+ of 62 checklistsOct 15-21: 58 species on 5%+ of 34 checklistsOct 22-31: 57 species on 5%+ of 54 checklistsNov 1-7: 55 species on 5%+ of 78 checklistsNov 8-14: 49 species on 5%+ of 63 checklistsNov 15-21: 59 species on 5%+ of 38 checklistsNov 22-30: 52 species on 5%+ of 72 checklistsDec 1-7: 50 species on 5%+ of 34 checklistsDec 8-14: 36 species on 5%+ of 15 checklistsDec 15-21: 43 species on 5%+ of 26 checklistsDec 22-31: 38 species on 5%+ of 26 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. 1American Coot69%
  2. 2Common Loon63%
  3. 3Western Grebe63%
  4. 4Ring-billed Gull62%
  5. 5Mallard61%
  6. 6Canada Goose58%
  7. 7Black-billed Magpie51%
  8. 8Northern Flicker49%
  9. 9American White Pelican39%
  10. 10Pied-billed Grebe38%
  11. 11Gadwall37%
  12. 12American Robin35%
  13. 13Common Goldeneye34%
  14. 14American Wigeon34%
  15. 15Double-crested Cormorant33%

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 42 species

  1. Common Goldeneye59%
  2. Ring-billed Gull59%
  3. Black-billed Magpie53%
  4. American Coot52%
  5. Canada Goose50%

Spring 67 species

  1. American White Pelican63%
  2. Mallard63%
  3. Western Meadowlark63%
  4. Canada Goose62%
  5. American Robin57%

Summer 62 species

  1. American White Pelican84%
  2. Double-crested Cormorant79%
  3. Mallard65%
  4. Canada Goose63%
  5. Ring-billed Gull58%

Fall 64 species

  1. American Coot68%
  2. Ring-billed Gull67%
  3. Mallard64%
  4. American White Pelican62%
  5. Western Grebe62%

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.