WhenToBird

Birding spot · Santa Clara County, California

Birding at Halls Valley Lake: What You'll See Each Week

In November, the birds most often reported at Halls Valley Lake are California Scrub-Jay (99%), Acorn Woodpecker (96%), and Black Phoebe (85%). It is busiest in spring, when 79 species turn up on at least 1 in 20 checklists, and species counts peak in late April (81 species). 140 species have been reported here across 1,137 complete checklists from 402 birders.

Species by week

020406080100Jan 1-7: low data (6 checklists)Jan 8-14: low data (1 checklists)Jan 15-21: low data (5 checklists)Jan 22-31: 68 species on 5%+ of 14 checklistsFeb 1-7: low data (6 checklists)Feb 8-14: low data (7 checklists)Feb 15-21: low data (4 checklists)Feb 22-28: low data (6 checklists)Mar 1-7: low data (4 checklists)Mar 8-14: 71 species on 5%+ of 43 checklistsMar 15-21: 72 species on 5%+ of 41 checklistsMar 22-31: 71 species on 5%+ of 41 checklistsApr 1-7: 64 species on 5%+ of 24 checklistsApr 8-14: 76 species on 5%+ of 50 checklistsApr 15-21: 73 species on 5%+ of 57 checklistsApr 22-30: 81 species on 5%+ of 60 checklistsMay 1-7: 71 species on 5%+ of 70 checklistsMay 8-14: 73 species on 5%+ of 62 checklistsMay 15-21: 74 species on 5%+ of 45 checklistsMay 22-31: 66 species on 5%+ of 93 checklistsJun 1-7: 62 species on 5%+ of 25 checklistsJun 8-14: 62 species on 5%+ of 30 checklistsJun 15-21: 67 species on 5%+ of 24 checklistsJun 22-30: 64 species on 5%+ of 40 checklistsJul 1-7: 70 species on 5%+ of 36 checklistsJul 8-14: 56 species on 5%+ of 22 checklistsJul 15-21: 58 species on 5%+ of 22 checklistsJul 22-31: 68 species on 5%+ of 38 checklistsAug 1-7: 67 species on 5%+ of 45 checklistsAug 8-14: 64 species on 5%+ of 33 checklistsAug 15-21: 65 species on 5%+ of 13 checklistsAug 22-31: 71 species on 5%+ of 18 checklistsSep 1-7: low data (8 checklists)Sep 8-14: 59 species on 5%+ of 13 checklistsSep 15-21: low data (5 checklists)Sep 22-30: low data (7 checklists)Oct 1-7: low data (7 checklists)Oct 8-14: 70 species on 5%+ of 16 checklistsOct 15-21: low data (5 checklists)Oct 22-31: 52 species on 5%+ of 11 checklistsNov 1-7: 64 species on 5%+ of 22 checklistsNov 8-14: 59 species on 5%+ of 11 checklistsNov 15-21: low data (7 checklists)Nov 22-30: 58 species on 5%+ of 27 checklistsDec 1-7: low data (4 checklists)Dec 8-14: low data (3 checklists)Dec 15-21: low data (3 checklists)Dec 22-31: low data (3 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. 1California Scrub-Jay99%
  2. 2Acorn Woodpecker96%
  3. 3Black Phoebe85%
  4. 4Oak Titmouse85%
  5. 5Northern Flicker84%
  6. 6Ruby-crowned Kinglet79%
  7. 7White-crowned Sparrow76%
  8. 8American Crow73%
  9. 9Red-tailed Hawk73%
  10. 10White-breasted Nuthatch72%
  11. 11Yellow-rumped Warbler72%
  12. 12California Towhee67%
  13. 13Dark-eyed Junco67%
  14. 14Western Bluebird67%
  15. 15House Finch64%

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 59 species

  1. Acorn Woodpecker85%
  2. California Scrub-Jay85%
  3. Oak Titmouse85%
  4. Black Phoebe81%
  5. California Towhee73%

Spring 79 species

  1. Acorn Woodpecker92%
  2. Black Phoebe89%
  3. California Scrub-Jay88%
  4. Western Bluebird88%
  5. Turkey Vulture87%

Summer 65 species

  1. California Scrub-Jay91%
  2. Lesser Goldfinch90%
  3. Acorn Woodpecker90%
  4. Black Phoebe89%
  5. House Finch88%

Fall 62 species

  1. California Scrub-Jay96%
  2. Acorn Woodpecker94%
  3. Black Phoebe86%
  4. Oak Titmouse83%
  5. White-breasted Nuthatch73%

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.