WhenToBird

Zonotrichia atricapilla · Passerellidae

When Do Golden-crowned Sparrows Arrive in California?

Adult Golden-crowned Sparrow
Photo: Kevin Krebs, CC BY 4.0 via iNaturalist

Golden-crowned Sparrows are winter birds in California: the first arrive in mid September, they are common by late September, peak in the second week of December (24% of checklists), and most are gone by mid April.

When to look

First arrivalsSep 15-21mid September
Common bySep 22-30late September
PeakDec 8-14the second week of December
Most gone byApr 15-21mid April

Best: the second week of December. First arrivals mid September; most are gone by mid April. Peak: on about 24% of California checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Mayuncommon
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepcommon
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

Darker months: more checklists report it. Outlined: peak month.

0%10%20%30%Jan 1-7: 22% of 112336 checklistsJan 8-14: 22% of 85518 checklistsJan 15-21: 22% of 86488 checklistsJan 22-31: 21% of 116174 checklistsFeb 1-7: 21% of 75171 checklistsFeb 8-14: 21% of 84467 checklistsFeb 15-21: 19% of 105683 checklistsFeb 22-28: 20% of 83396 checklistsMar 1-7: 20% of 77470 checklistsMar 8-14: 19% of 75180 checklistsMar 15-21: 20% of 80770 checklistsMar 22-31: 20% of 114116 checklistsApr 1-7: 21% of 84057 checklistsApr 8-14: 21% of 83692 checklistsApr 15-21: 18% of 89242 checklistsApr 22-30: 9.4% of 114289 checklistsMay 1-7: 2.5% of 85728 checklistsMay 8-14: 0.6% of 91984 checklistsMay 15-21: 0.1% of 75478 checklistsMay 22-31: 0.1% of 106250 checklistsJun 1-7: 0.1% of 70051 checklistsJun 8-14: 0.1% of 67485 checklistsJun 15-21: 0.1% of 66269 checklistsJun 22-30: 0.1% of 79172 checklistsJul 1-7: 0.1% of 62877 checklistsJul 8-14: 0.1% of 60328 checklistsJul 15-21: 0.1% of 59705 checklistsJul 22-31: 0.1% of 83796 checklistsAug 1-7: 0.1% of 60215 checklistsAug 8-14: 0.1% of 60172 checklistsAug 15-21: 0.1% of 59877 checklistsAug 22-31: 0.1% of 89107 checklistsSep 1-7: 0.1% of 72000 checklistsSep 8-14: 0.4% of 71228 checklistsSep 15-21: 2.7% of 76808 checklistsSep 22-30: 11% of 100204 checklistsOct 1-7: 19% of 76571 checklistsOct 8-14: 20% of 80874 checklistsOct 15-21: 24% of 74581 checklistsOct 22-31: 24% of 97498 checklistsNov 1-7: 23% of 70851 checklistsNov 8-14: 23% of 72431 checklistsNov 15-21: 23% of 66767 checklistsNov 22-30: 23% of 94737 checklistsDec 1-7: 24% of 65393 checklistsDec 8-14: 24% of 67449 checklistsDec 15-21: 25% of 83421 checklistsDec 22-31: 22% of 124993 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Frequency is the share of complete checklists in California that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

JanFebMarAprMayJunJulAugSepOctNovDec
today
Second week of November

Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.

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Where in California

Best counties

Share of checklists at the peak
  1. Santa Cruz CountyBest late October · 3637 checklists that week, 140,819 in all54%
  2. Contra Costa CountyBest early November · 2061 checklists that week, 115,071 in all50%
  3. San Francisco CountyBest late October · 3161 checklists that week, 130,018 in all48%
  4. Mendocino CountyBest the second week of December · 780 checklists that week, 47,934 in all48%
  5. Napa CountyBest mid October · 346 checklists that week, 18,976 in all48%
  6. Marin CountyBest the second week of December · 2053 checklists that week, 135,728 in all47%

Best spots

Share of checklists at the peak
  1. American River Parkway (west 2)Sacramento County, best early February · 20 checklists that week, 633 in all98%
  2. Riverside ParkMendocino County, best early November · 29 checklists that week, 1,220 in all98%
  3. Crespi Pond (North Moss Beach)Monterey County, best early April · 26 checklists that week, 847 in all95%
  4. Carmel Valley VillageMonterey County, best late March · 51 checklists that week, 1,508 in all95%
  5. Corona Heights ParkSan Francisco County, best the second week of November · 26 checklists that week, 1,743 in all95%

Busy spots report more of everything; compare the checklist counts before you drive anywhere.

Best time of day

In California, the Golden-crowned Sparrow is most often listed on checklists started between 8 and 10 am (16% of those checklists).

0%5%10%15%20%12 am: too few checklists (1688) to judge1 am: too few checklists (1451) to judge2 am: too few checklists (1402) to judge3 am: too few checklists (1743) to judge4 am: too few checklists (4647) to judge5 am: too few checklists (32158) to judge6 am: 8.2% of 186053 checklists7 am: 15% of 444086 checklists8 am: 17% of 535846 checklists9 am: 16% of 486061 checklists10 am: 15% of 411130 checklists11 am: 13% of 325798 checklists12 pm: 13% of 269132 checklists1 pm: 13% of 244762 checklists2 pm: 13% of 235420 checklists3 pm: 13% of 232365 checklists4 pm: 11% of 208688 checklists5 pm: 8.2% of 146104 checklists6 pm: 4.8% of 96867 checklists7 pm: too few checklists (50942) to judge8 pm: too few checklists (14803) to judge9 pm: too few checklists (5561) to judge10 pm: too few checklists (3546) to judge11 pm: too few checklists (2092) to judge12a3a6a9a12p3p6p9p
Share of checklists started in each local hour that reported it. It reflects when people go birding as well as when birds are active. Grey hours have too few checklists (under 2% of the state’s, or under 200) to judge.
Week-by-week table
MonthDays 1-78-1415-2122-end
January22%22%22%21%
February21%21%19%20%
March20%19%20%20%
April21%21%18%9.4%
May2.5%0.6%0.1%0.1%
June0.1%0.1%0.1%0.1%
July0.1%0.1%0.1%0.1%
August0.1%0.1%0.1%0.1%
September0.1%0.4%2.7%11%
October19%20%24%24%
November23%23%23%23%
December24%24%25%22%

Neighboring states

  • Nevada: arrives late September, 1 week later than California
  • Oregon: arrives the second week of September, 1 week earlier than California
  • Washington: arrives the second week of September, 1 week earlier than California
  • Alaska: arrives the second week of April, 21 weeks earlier than California

Common questions

When do Golden-crowned Sparrows arrive in California?
Golden-crowned Sparrows are winter birds in California: the first arrive in mid September, they are common by late September, peak in the second week of December (24% of checklists), and most are gone by mid April.
When do Golden-crowned Sparrows leave California?
Most Golden-crowned Sparrows have left California by mid April, when reports fall below half their usual rate. Stragglers are still reported until early May.
When is the best time to see a Golden-crowned Sparrow in California?
The Golden-crowned Sparrow is reported most often in the second week of December, on about 24% of California checklists.
Where in California are Golden-crowned Sparrows seen most often?
By county, Santa Cruz County, Contra Costa County, and San Francisco County have the highest peak reporting rates for the Golden-crowned Sparrow (counties with at least 200 checklists).