WhenToBird

Birding spot · Santa Clara County, California

Birding at Bay Trail: What You'll See Each Week

In November, the birds most often reported at Bay Trail are Black-necked Stilt (91%), American Avocet (89%), and Killdeer (88%). It is busiest in spring, when 72 species turn up on at least 1 in 20 checklists, and species counts peak in late April (79 species). 151 species have been reported here across 1,302 complete checklists from 431 birders.

Species by week

020406080Jan 1-7: 75 species on 5%+ of 58 checklistsJan 8-14: 54 species on 5%+ of 22 checklistsJan 15-21: 59 species on 5%+ of 24 checklistsJan 22-31: 58 species on 5%+ of 22 checklistsFeb 1-7: 67 species on 5%+ of 19 checklistsFeb 8-14: low data (9 checklists)Feb 15-21: 57 species on 5%+ of 25 checklistsFeb 22-28: 53 species on 5%+ of 10 checklistsMar 1-7: low data (8 checklists)Mar 8-14: 63 species on 5%+ of 10 checklistsMar 15-21: 70 species on 5%+ of 11 checklistsMar 22-31: low data (9 checklists)Apr 1-7: low data (3 checklists)Apr 8-14: low data (8 checklists)Apr 15-21: 70 species on 5%+ of 15 checklistsApr 22-30: 79 species on 5%+ of 13 checklistsMay 1-7: 63 species on 5%+ of 12 checklistsMay 8-14: low data (8 checklists)May 15-21: low data (6 checklists)May 22-31: low data (4 checklists)Jun 1-7: 42 species on 5%+ of 15 checklistsJun 8-14: 60 species on 5%+ of 15 checklistsJun 15-21: 46 species on 5%+ of 10 checklistsJun 22-30: 46 species on 5%+ of 18 checklistsJul 1-7: low data (8 checklists)Jul 8-14: 44 species on 5%+ of 11 checklistsJul 15-21: 50 species on 5%+ of 14 checklistsJul 22-31: 50 species on 5%+ of 60 checklistsAug 1-7: 39 species on 5%+ of 47 checklistsAug 8-14: 43 species on 5%+ of 29 checklistsAug 15-21: 41 species on 5%+ of 48 checklistsAug 22-31: 52 species on 5%+ of 72 checklistsSep 1-7: 51 species on 5%+ of 64 checklistsSep 8-14: 58 species on 5%+ of 55 checklistsSep 15-21: 48 species on 5%+ of 25 checklistsSep 22-30: 51 species on 5%+ of 63 checklistsOct 1-7: 73 species on 5%+ of 18 checklistsOct 8-14: 74 species on 5%+ of 35 checklistsOct 15-21: 70 species on 5%+ of 80 checklistsOct 22-31: 63 species on 5%+ of 42 checklistsNov 1-7: 55 species on 5%+ of 25 checklistsNov 8-14: 70 species on 5%+ of 39 checklistsNov 15-21: 62 species on 5%+ of 21 checklistsNov 22-30: 62 species on 5%+ of 76 checklistsDec 1-7: 62 species on 5%+ of 43 checklistsDec 8-14: 63 species on 5%+ of 22 checklistsDec 15-21: 52 species on 5%+ of 21 checklistsDec 22-31: 71 species on 5%+ of 30 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. 1Black-necked Stilt91%
  2. 2American Avocet89%
  3. 3Killdeer88%
  4. 4Northern Shoveler84%
  5. 5Least Sandpiper84%
  6. 6Great Egret63%
  7. 7Snowy Egret62%
  8. 8Turkey Vulture56%
  9. 9Mallard55%
  10. 10California Gull53%
  11. 11Greater Yellowlegs53%
  12. 12Long-billed Dowitcher53%
  13. 13Green-winged Teal50%
  14. 14Canada Goose50%
  15. 15Red-tailed Hawk39%

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 64 species

  1. American Avocet91%
  2. Northern Shoveler85%
  3. Black-necked Stilt81%
  4. Killdeer72%
  5. Canada Goose63%

Spring 72 species

  1. Canada Goose93%
  2. American Avocet88%
  3. Black-necked Stilt88%
  4. Mallard74%
  5. Barn Swallow50%

Summer 47 species

  1. Black-necked Stilt88%
  2. American Avocet78%
  3. Barn Swallow71%
  4. Greater Yellowlegs68%
  5. California Gull65%

Fall 67 species

  1. Black-necked Stilt92%
  2. Northern Shoveler85%
  3. Least Sandpiper85%
  4. American Avocet84%
  5. Killdeer80%

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.