WhenToBird

Birding spot · Marin County, California

Birding at Corte Madera Marsh Ecological Reserve: What You'll See Each Week

In November, the birds most often reported at Corte Madera Marsh Ecological Reserve are White-crowned Sparrow (93%), Song Sparrow (91%), and Green-winged Teal (83%). It is busiest in spring, when 87 species turn up on at least 1 in 20 checklists, and species counts peak in mid November (101 species). 169 species have been reported here across 847 complete checklists from 290 birders.

Species by week

0255075100125Jan 1-7: 75 species on 5%+ of 21 checklistsJan 8-14: 91 species on 5%+ of 14 checklistsJan 15-21: 80 species on 5%+ of 27 checklistsJan 22-31: 84 species on 5%+ of 36 checklistsFeb 1-7: 72 species on 5%+ of 14 checklistsFeb 8-14: 78 species on 5%+ of 30 checklistsFeb 15-21: 90 species on 5%+ of 12 checklistsFeb 22-28: 88 species on 5%+ of 20 checklistsMar 1-7: low data (8 checklists)Mar 8-14: 93 species on 5%+ of 18 checklistsMar 15-21: 81 species on 5%+ of 15 checklistsMar 22-31: 70 species on 5%+ of 11 checklistsApr 1-7: low data (8 checklists)Apr 8-14: 86 species on 5%+ of 12 checklistsApr 15-21: 62 species on 5%+ of 10 checklistsApr 22-30: low data (8 checklists)May 1-7: low data (6 checklists)May 8-14: low data (3 checklists)May 15-21: low data (6 checklists)May 22-31: low data (5 checklists)Jun 1-7: low data (3 checklists)Jun 8-14: low data (1 checklists)Jun 15-21: low data (2 checklists)Jun 22-30: low data (1 checklists)Jul 1-7: low data (7 checklists)Jul 8-14: low data (7 checklists)Jul 15-21: 53 species on 5%+ of 10 checklistsJul 22-31: 62 species on 5%+ of 20 checklistsAug 1-7: low data (4 checklists)Aug 8-14: 65 species on 5%+ of 16 checklistsAug 15-21: 66 species on 5%+ of 16 checklistsAug 22-31: 67 species on 5%+ of 48 checklistsSep 1-7: 83 species on 5%+ of 32 checklistsSep 8-14: 83 species on 5%+ of 26 checklistsSep 15-21: 72 species on 5%+ of 25 checklistsSep 22-30: 78 species on 5%+ of 24 checklistsOct 1-7: 78 species on 5%+ of 55 checklistsOct 8-14: 74 species on 5%+ of 47 checklistsOct 15-21: 89 species on 5%+ of 56 checklistsOct 22-31: 76 species on 5%+ of 21 checklistsNov 1-7: 77 species on 5%+ of 21 checklistsNov 8-14: 83 species on 5%+ of 22 checklistsNov 15-21: 101 species on 5%+ of 18 checklistsNov 22-30: 86 species on 5%+ of 31 checklistsDec 1-7: low data (8 checklists)Dec 8-14: 96 species on 5%+ of 13 checklistsDec 15-21: 69 species on 5%+ of 10 checklistsDec 22-31: 91 species on 5%+ of 19 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. 1White-crowned Sparrow93%
  2. 2Song Sparrow91%
  3. 3Green-winged Teal83%
  4. 4House Finch80%
  5. 5Snowy Egret72%
  6. 6Black Phoebe70%
  7. 7Marsh Wren68%
  8. 8American Crow67%
  9. 9Common Yellowthroat66%
  10. 10Great Egret66%
  11. 11Ridgway's Rail59%
  12. 12Bufflehead57%
  13. 13European Starling57%
  14. 14Black-bellied Plover55%
  15. 15Double-crested Cormorant55%

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 81 species

  1. Song Sparrow88%
  2. Green-winged Teal87%
  3. American Wigeon75%
  4. Snowy Egret73%
  5. Mallard68%

Spring 87 species

  1. Song Sparrow99%
  2. Mallard81%
  3. Snowy Egret80%
  4. Northern Mockingbird79%
  5. American Crow75%

Summer 65 species

  1. Song Sparrow81%
  2. Snowy Egret78%
  3. Willet75%
  4. Mallard69%
  5. Long-billed Curlew67%

Fall 87 species

  1. Song Sparrow89%
  2. White-crowned Sparrow74%
  3. House Finch72%
  4. Snowy Egret70%
  5. American Crow64%

Specialties

Birds reported far more often here than across California.

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.