WhenToBird

Birding spot · Douglas County, Colorado

Birding at Blackrock Lake: What You'll See Each Week

In November, the birds most often reported at Blackrock Lake are Mallard (95%), Northern Flicker (74%), and Green-winged Teal (73%). It is busiest in summer, when 62 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (65 species). 136 species have been reported here across 1,240 complete checklists from 441 birders.

Species by week

020406080Jan 1-7: 49 species on 5%+ of 94 checklistsJan 8-14: 49 species on 5%+ of 57 checklistsJan 15-21: 41 species on 5%+ of 62 checklistsJan 22-31: 39 species on 5%+ of 66 checklistsFeb 1-7: 36 species on 5%+ of 41 checklistsFeb 8-14: 43 species on 5%+ of 34 checklistsFeb 15-21: 43 species on 5%+ of 37 checklistsFeb 22-28: 35 species on 5%+ of 41 checklistsMar 1-7: 39 species on 5%+ of 26 checklistsMar 8-14: 43 species on 5%+ of 31 checklistsMar 15-21: 47 species on 5%+ of 18 checklistsMar 22-31: 39 species on 5%+ of 50 checklistsApr 1-7: 40 species on 5%+ of 30 checklistsApr 8-14: 45 species on 5%+ of 30 checklistsApr 15-21: 57 species on 5%+ of 11 checklistsApr 22-30: 54 species on 5%+ of 30 checklistsMay 1-7: 49 species on 5%+ of 12 checklistsMay 8-14: 65 species on 5%+ of 20 checklistsMay 15-21: low data (8 checklists)May 22-31: 53 species on 5%+ of 11 checklistsJun 1-7: low data (5 checklists)Jun 8-14: low data (4 checklists)Jun 15-21: low data (6 checklists)Jun 22-30: low data (6 checklists)Jul 1-7: low data (6 checklists)Jul 8-14: low data (8 checklists)Jul 15-21: 58 species on 5%+ of 12 checklistsJul 22-31: 56 species on 5%+ of 12 checklistsAug 1-7: low data (5 checklists)Aug 8-14: low data (0 checklists)Aug 15-21: low data (8 checklists)Aug 22-31: low data (7 checklists)Sep 1-7: low data (7 checklists)Sep 8-14: 55 species on 5%+ of 12 checklistsSep 15-21: 50 species on 5%+ of 21 checklistsSep 22-30: 61 species on 5%+ of 16 checklistsOct 1-7: 52 species on 5%+ of 18 checklistsOct 8-14: 40 species on 5%+ of 12 checklistsOct 15-21: 36 species on 5%+ of 12 checklistsOct 22-31: 44 species on 5%+ of 15 checklistsNov 1-7: 42 species on 5%+ of 15 checklistsNov 8-14: 32 species on 5%+ of 12 checklistsNov 15-21: low data (9 checklists)Nov 22-30: 45 species on 5%+ of 70 checklistsDec 1-7: 47 species on 5%+ of 76 checklistsDec 8-14: 52 species on 5%+ of 37 checklistsDec 15-21: 48 species on 5%+ of 42 checklistsDec 22-31: 53 species on 5%+ of 78 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. 1Mallard95%
  2. 2Northern Flicker74%
  3. 3Green-winged Teal73%
  4. 4Black-capped Chickadee70%
  5. 5Song Sparrow70%
  6. 6Gadwall61%
  7. 7Black-billed Magpie58%
  8. 8American Wigeon54%
  9. 9American Tree Sparrow49%
  10. 10Canada Goose47%
  11. 11Pine Warbler44%
  12. 12American Crow43%
  13. 13Red-tailed Hawk43%
  14. 14Northern Parula41%
  15. 15Yellow-rumped Warbler39%

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 50 species

  1. Mallard95%
  2. Green-winged Teal89%
  3. Gadwall85%
  4. Common Goldeneye75%
  5. Black-capped Chickadee64%

Spring 55 species

  1. Mallard83%
  2. Northern Flicker72%
  3. Black-capped Chickadee63%
  4. Black-billed Magpie59%
  5. Gadwall57%

Summer 62 species

  1. Mallard68%
  2. Double-crested Cormorant62%
  3. Northern House Wren57%
  4. Northern Yellow Warbler56%
  5. Great Blue Heron53%

Fall 53 species

  1. Mallard92%
  2. Northern Flicker67%
  3. Black-capped Chickadee64%
  4. Black-billed Magpie56%
  5. Song Sparrow51%

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.