WhenToBird

Birding spot · San Diego County, California

Birding at Tijuana Slough National Wildlife Refuge: What You'll See Each Week

In November, the birds most often reported at Tijuana Slough National Wildlife Refuge are White-crowned Sparrow (88%), Anna's Hummingbird (74%), and Snowy Egret (74%). It is busiest in spring, when 79 species turn up on at least 1 in 20 checklists, and species counts peak in early December (82 species). 202 species have been reported here across 3,134 complete checklists from 2,028 birders.

Species by week

020406080100Jan 1-7: 75 species on 5%+ of 104 checklistsJan 8-14: 76 species on 5%+ of 84 checklistsJan 15-21: 71 species on 5%+ of 68 checklistsJan 22-31: 68 species on 5%+ of 117 checklistsFeb 1-7: 72 species on 5%+ of 73 checklistsFeb 8-14: 74 species on 5%+ of 65 checklistsFeb 15-21: 74 species on 5%+ of 102 checklistsFeb 22-28: 77 species on 5%+ of 177 checklistsMar 1-7: 76 species on 5%+ of 110 checklistsMar 8-14: 80 species on 5%+ of 53 checklistsMar 15-21: 69 species on 5%+ of 54 checklistsMar 22-31: 81 species on 5%+ of 80 checklistsApr 1-7: 77 species on 5%+ of 67 checklistsApr 8-14: 70 species on 5%+ of 62 checklistsApr 15-21: 68 species on 5%+ of 66 checklistsApr 22-30: 68 species on 5%+ of 109 checklistsMay 1-7: 67 species on 5%+ of 66 checklistsMay 8-14: 56 species on 5%+ of 43 checklistsMay 15-21: 64 species on 5%+ of 39 checklistsMay 22-31: 54 species on 5%+ of 46 checklistsJun 1-7: 60 species on 5%+ of 32 checklistsJun 8-14: 55 species on 5%+ of 55 checklistsJun 15-21: 50 species on 5%+ of 45 checklistsJun 22-30: 55 species on 5%+ of 62 checklistsJul 1-7: 51 species on 5%+ of 43 checklistsJul 8-14: 67 species on 5%+ of 56 checklistsJul 15-21: 61 species on 5%+ of 38 checklistsJul 22-31: 53 species on 5%+ of 57 checklistsAug 1-7: 51 species on 5%+ of 48 checklistsAug 8-14: 50 species on 5%+ of 37 checklistsAug 15-21: 54 species on 5%+ of 46 checklistsAug 22-31: 54 species on 5%+ of 71 checklistsSep 1-7: 54 species on 5%+ of 52 checklistsSep 8-14: 53 species on 5%+ of 57 checklistsSep 15-21: 55 species on 5%+ of 50 checklistsSep 22-30: 53 species on 5%+ of 61 checklistsOct 1-7: 56 species on 5%+ of 44 checklistsOct 8-14: 70 species on 5%+ of 68 checklistsOct 15-21: 63 species on 5%+ of 43 checklistsOct 22-31: 64 species on 5%+ of 64 checklistsNov 1-7: 66 species on 5%+ of 43 checklistsNov 8-14: 75 species on 5%+ of 55 checklistsNov 15-21: 69 species on 5%+ of 58 checklistsNov 22-30: 80 species on 5%+ of 77 checklistsDec 1-7: 82 species on 5%+ of 57 checklistsDec 8-14: 68 species on 5%+ of 68 checklistsDec 15-21: 69 species on 5%+ of 50 checklistsDec 22-31: 77 species on 5%+ of 112 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 Sparrow88%
  2. 2Anna's Hummingbird74%
  3. 3Snowy Egret74%
  4. 4Yellow-rumped Warbler73%
  5. 5Great Egret73%
  6. 6American Crow69%
  7. 7House Finch69%
  8. 8Black Phoebe66%
  9. 9Northern Harrier64%
  10. 10Mallard62%
  11. 11Savannah Sparrow61%
  12. 12Song Sparrow61%
  13. 13Say's Phoebe57%
  14. 14American Kestrel47%
  15. 15Mourning Dove46%

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 74 species

  1. Snowy Egret74%
  2. White-crowned Sparrow73%
  3. Anna's Hummingbird72%
  4. American Wigeon69%
  5. Song Sparrow69%

Spring 79 species

  1. Song Sparrow80%
  2. American Crow74%
  3. House Finch73%
  4. Anna's Hummingbird63%
  5. Yellow-crowned Night Heron62%

Summer 57 species

  1. Yellow-crowned Night Heron81%
  2. Snowy Egret79%
  3. Savannah Sparrow71%
  4. House Finch69%
  5. Ridgway's Rail61%

Fall 69 species

  1. Snowy Egret72%
  2. Anna's Hummingbird68%
  3. Great Egret68%
  4. American Crow67%
  5. House Finch64%

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.