WhenToBird

Birding spot · Adams County, Colorado

Birding at Lake Sangraco (Ralston Creek): What You'll See Each Week

In November, the birds most often reported at Lake Sangraco (Ralston Creek) are Mallard (90%), Ring-necked Duck (85%), and Northern Shoveler (77%). It is busiest in spring, when 67 species turn up on at least 1 in 20 checklists, and species counts peak in early May (76 species). 139 species have been reported here across 931 complete checklists from 253 birders.

Species by week

020406080Jan 1-7: low data (6 checklists)Jan 8-14: low data (4 checklists)Jan 15-21: low data (4 checklists)Jan 22-31: low data (5 checklists)Feb 1-7: 38 species on 5%+ of 10 checklistsFeb 8-14: low data (3 checklists)Feb 15-21: low data (2 checklists)Feb 22-28: low data (8 checklists)Mar 1-7: 33 species on 5%+ of 10 checklistsMar 8-14: 42 species on 5%+ of 13 checklistsMar 15-21: 38 species on 5%+ of 12 checklistsMar 22-31: 42 species on 5%+ of 26 checklistsApr 1-7: 36 species on 5%+ of 22 checklistsApr 8-14: 61 species on 5%+ of 34 checklistsApr 15-21: 60 species on 5%+ of 48 checklistsApr 22-30: 69 species on 5%+ of 60 checklistsMay 1-7: 76 species on 5%+ of 39 checklistsMay 8-14: 62 species on 5%+ of 48 checklistsMay 15-21: 71 species on 5%+ of 31 checklistsMay 22-31: 53 species on 5%+ of 34 checklistsJun 1-7: 57 species on 5%+ of 15 checklistsJun 8-14: 48 species on 5%+ of 19 checklistsJun 15-21: 39 species on 5%+ of 61 checklistsJun 22-30: 41 species on 5%+ of 48 checklistsJul 1-7: 43 species on 5%+ of 21 checklistsJul 8-14: 46 species on 5%+ of 19 checklistsJul 15-21: 41 species on 5%+ of 13 checklistsJul 22-31: 59 species on 5%+ of 19 checklistsAug 1-7: 40 species on 5%+ of 12 checklistsAug 8-14: 35 species on 5%+ of 22 checklistsAug 15-21: 45 species on 5%+ of 21 checklistsAug 22-31: 54 species on 5%+ of 35 checklistsSep 1-7: 45 species on 5%+ of 27 checklistsSep 8-14: 51 species on 5%+ of 12 checklistsSep 15-21: 61 species on 5%+ of 14 checklistsSep 22-30: 54 species on 5%+ of 20 checklistsOct 1-7: 61 species on 5%+ of 20 checklistsOct 8-14: 58 species on 5%+ of 15 checklistsOct 15-21: 57 species on 5%+ of 18 checklistsOct 22-31: 37 species on 5%+ of 10 checklistsNov 1-7: 41 species on 5%+ of 10 checklistsNov 8-14: 42 species on 5%+ of 11 checklistsNov 15-21: 34 species on 5%+ of 12 checklistsNov 22-30: 43 species on 5%+ of 15 checklistsDec 1-7: low data (3 checklists)Dec 8-14: low data (9 checklists)Dec 15-21: low data (5 checklists)Dec 22-31: low data (6 checklists)JanFebMarAprMayJunJulAugSepOctNovDec
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. 1Mallard90%
  2. 2Ring-necked Duck85%
  3. 3Northern Shoveler77%
  4. 4American Wigeon75%
  5. 5Canada Goose73%
  6. 6Rock Pigeon73%
  7. 7Bufflehead71%
  8. 8Killdeer67%
  9. 9European Starling63%
  10. 10Ring-billed Gull63%
  11. 11Gadwall60%
  12. 12Black-billed Magpie48%
  13. 13Hooded Merganser48%
  14. 14Northern Flicker48%
  15. 15Great Blue Heron42%

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 34 species

  1. Canada Goose86%
  2. Mallard78%
  3. Ring-billed Gull69%
  4. Rock Pigeon55%
  5. Northern Shoveler52%

Spring 67 species

  1. Canada Goose92%
  2. Killdeer89%
  3. Mallard89%
  4. Red-winged Blackbird77%
  5. Rock Pigeon76%

Summer 44 species

  1. Killdeer95%
  2. Snowy Egret90%
  3. Mallard88%
  4. Canada Goose87%
  5. Rock Pigeon84%

Fall 51 species

  1. Mallard89%
  2. Killdeer83%
  3. Rock Pigeon83%
  4. Canada Goose74%
  5. European Starling64%

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.