WhenToBird

Birding spot · Orange County, California

Birding at University of California, Irvine Open Space Reserve: What You'll See Each Week

In November, the birds most often reported at University of California, Irvine Open Space Reserve are White-crowned Sparrow (92%), American Crow (87%), and California Towhee (82%). It is busiest in spring, when 63 species turn up on at least 1 in 20 checklists, and species counts peak in early May (64 species). 120 species have been reported here across 814 complete checklists from 260 birders.

Species by week

020406080Jan 1-7: 56 species on 5%+ of 27 checklistsJan 8-14: 48 species on 5%+ of 21 checklistsJan 15-21: 46 species on 5%+ of 14 checklistsJan 22-31: 51 species on 5%+ of 29 checklistsFeb 1-7: 55 species on 5%+ of 15 checklistsFeb 8-14: 53 species on 5%+ of 19 checklistsFeb 15-21: 47 species on 5%+ of 25 checklistsFeb 22-28: 45 species on 5%+ of 21 checklistsMar 1-7: 61 species on 5%+ of 17 checklistsMar 8-14: 58 species on 5%+ of 18 checklistsMar 15-21: 63 species on 5%+ of 20 checklistsMar 22-31: 57 species on 5%+ of 31 checklistsApr 1-7: 56 species on 5%+ of 24 checklistsApr 8-14: 61 species on 5%+ of 32 checklistsApr 15-21: 61 species on 5%+ of 27 checklistsApr 22-30: 59 species on 5%+ of 32 checklistsMay 1-7: 64 species on 5%+ of 13 checklistsMay 8-14: 63 species on 5%+ of 16 checklistsMay 15-21: 60 species on 5%+ of 12 checklistsMay 22-31: 50 species on 5%+ of 14 checklistsJun 1-7: 49 species on 5%+ of 13 checklistsJun 8-14: 52 species on 5%+ of 13 checklistsJun 15-21: 49 species on 5%+ of 11 checklistsJun 22-30: low data (9 checklists)Jul 1-7: 58 species on 5%+ of 12 checklistsJul 8-14: low data (9 checklists)Jul 15-21: 45 species on 5%+ of 10 checklistsJul 22-31: 53 species on 5%+ of 15 checklistsAug 1-7: 39 species on 5%+ of 12 checklistsAug 8-14: low data (9 checklists)Aug 15-21: 58 species on 5%+ of 12 checklistsAug 22-31: low data (9 checklists)Sep 1-7: 38 species on 5%+ of 12 checklistsSep 8-14: low data (7 checklists)Sep 15-21: 56 species on 5%+ of 18 checklistsSep 22-30: 50 species on 5%+ of 20 checklistsOct 1-7: 57 species on 5%+ of 11 checklistsOct 8-14: 53 species on 5%+ of 15 checklistsOct 15-21: 46 species on 5%+ of 14 checklistsOct 22-31: 55 species on 5%+ of 14 checklistsNov 1-7: 45 species on 5%+ of 10 checklistsNov 8-14: 50 species on 5%+ of 46 checklistsNov 15-21: 40 species on 5%+ of 24 checklistsNov 22-30: 54 species on 5%+ of 13 checklistsDec 1-7: low data (5 checklists)Dec 8-14: 46 species on 5%+ of 10 checklistsDec 15-21: 59 species on 5%+ of 13 checklistsDec 22-31: 56 species on 5%+ of 21 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 Sparrow92%
  2. 2American Crow87%
  3. 3California Towhee82%
  4. 4Northern Mockingbird80%
  5. 5House Finch76%
  6. 6Yellow-rumped Warbler73%
  7. 7Say's Phoebe72%
  8. 8Black Phoebe62%
  9. 9California Gnatcatcher62%
  10. 10Cassin's Kingbird61%
  11. 11Mourning Dove57%
  12. 12Lesser Goldfinch56%
  13. 13Cactus Wren53%
  14. 14Allen's Hummingbird48%
  15. 15Anna's Hummingbird46%

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 53 species

  1. American Crow84%
  2. White-crowned Sparrow83%
  3. California Towhee79%
  4. Allen's Hummingbird74%
  5. Northern Mockingbird72%

Spring 63 species

  1. Northern Mockingbird88%
  2. California Towhee87%
  3. American Crow86%
  4. Allen's Hummingbird85%
  5. Lesser Goldfinch80%

Summer 45 species

  1. California Towhee90%
  2. Lesser Goldfinch79%
  3. House Finch75%
  4. American Crow74%
  5. Mourning Dove74%

Fall 49 species

  1. American Crow84%
  2. California Towhee82%
  3. House Finch78%
  4. Northern Mockingbird70%
  5. Say's Phoebe64%

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.