WhenToBird

Birding spot · Contra Costa County, California

Birding at Martinez Regional Shoreline: What You'll See Each Week

In November, the birds most often reported at Martinez Regional Shoreline are White-crowned Sparrow (90%), Bufflehead (86%), and Mallard (85%). It is busiest in winter, when 80 species turn up on at least 1 in 20 checklists, and species counts peak in late December (91 species). 162 species have been reported here across 1,344 complete checklists from 439 birders.

Species by week

020406080100Jan 1-7: 86 species on 5%+ of 55 checklistsJan 8-14: 74 species on 5%+ of 48 checklistsJan 15-21: 80 species on 5%+ of 38 checklistsJan 22-31: 76 species on 5%+ of 49 checklistsFeb 1-7: 76 species on 5%+ of 31 checklistsFeb 8-14: 78 species on 5%+ of 29 checklistsFeb 15-21: 71 species on 5%+ of 43 checklistsFeb 22-28: 80 species on 5%+ of 28 checklistsMar 1-7: 66 species on 5%+ of 28 checklistsMar 8-14: 71 species on 5%+ of 23 checklistsMar 15-21: 87 species on 5%+ of 19 checklistsMar 22-31: 79 species on 5%+ of 26 checklistsApr 1-7: 78 species on 5%+ of 26 checklistsApr 8-14: 68 species on 5%+ of 27 checklistsApr 15-21: 81 species on 5%+ of 20 checklistsApr 22-30: 58 species on 5%+ of 21 checklistsMay 1-7: 81 species on 5%+ of 19 checklistsMay 8-14: 76 species on 5%+ of 20 checklistsMay 15-21: 68 species on 5%+ of 15 checklistsMay 22-31: 60 species on 5%+ of 27 checklistsJun 1-7: 56 species on 5%+ of 17 checklistsJun 8-14: 56 species on 5%+ of 15 checklistsJun 15-21: 57 species on 5%+ of 18 checklistsJun 22-30: 53 species on 5%+ of 24 checklistsJul 1-7: 57 species on 5%+ of 17 checklistsJul 8-14: 75 species on 5%+ of 18 checklistsJul 15-21: 51 species on 5%+ of 23 checklistsJul 22-31: 48 species on 5%+ of 27 checklistsAug 1-7: 50 species on 5%+ of 17 checklistsAug 8-14: 60 species on 5%+ of 19 checklistsAug 15-21: 60 species on 5%+ of 20 checklistsAug 22-31: 53 species on 5%+ of 25 checklistsSep 1-7: 54 species on 5%+ of 24 checklistsSep 8-14: 72 species on 5%+ of 17 checklistsSep 15-21: 52 species on 5%+ of 24 checklistsSep 22-30: 63 species on 5%+ of 23 checklistsOct 1-7: 82 species on 5%+ of 15 checklistsOct 8-14: 76 species on 5%+ of 16 checklistsOct 15-21: 86 species on 5%+ of 20 checklistsOct 22-31: 75 species on 5%+ of 37 checklistsNov 1-7: 84 species on 5%+ of 34 checklistsNov 8-14: 78 species on 5%+ of 34 checklistsNov 15-21: 83 species on 5%+ of 43 checklistsNov 22-30: 78 species on 5%+ of 65 checklistsDec 1-7: 81 species on 5%+ of 25 checklistsDec 8-14: 83 species on 5%+ of 32 checklistsDec 15-21: 75 species on 5%+ of 27 checklistsDec 22-31: 91 species on 5%+ of 76 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 Sparrow90%
  2. 2Bufflehead86%
  3. 3Mallard85%
  4. 4American Coot82%
  5. 5Song Sparrow82%
  6. 6Snowy Egret80%
  7. 7Black Phoebe78%
  8. 8Canada Goose77%
  9. 9Rock Pigeon74%
  10. 10Ring-billed Gull73%
  11. 11Red-winged Blackbird71%
  12. 12Yellow-rumped Warbler67%
  13. 13Double-crested Cormorant66%
  14. 14Great Egret66%
  15. 15Black-necked Stilt65%

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 80 species

  1. Mallard92%
  2. Bufflehead91%
  3. American Coot86%
  4. Canada Goose86%
  5. Song Sparrow78%

Spring 76 species

  1. Canada Goose91%
  2. Mallard90%
  3. Song Sparrow86%
  4. Rock Pigeon83%
  5. Marsh Wren82%

Summer 54 species

  1. Mallard90%
  2. Canada Goose89%
  3. Barn Swallow85%
  4. Rock Pigeon81%
  5. Red-winged Blackbird80%

Fall 80 species

  1. Mallard86%
  2. Canada Goose83%
  3. Red-winged Blackbird79%
  4. Rock Pigeon79%
  5. Snowy Egret79%

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.