WhenToBird

Zonotrichia albicollis · Passerellidae

When Do White-throated Sparrows Arrive in Washington?

Adult White-throated Sparrow
Photo: northerly, CC BY 4.0 via iNaturalist

White-throated Sparrows are winter birds in Washington: they arrive in mid September, peak in mid October (2.1% of checklists), and most are gone by late April.

When to look

First arrivalsSep 15-21mid September
Common bySep 15-21mid September
PeakOct 15-21mid October
Most gone byApr 22-30late April

Best: mid October. First arrivals mid September; most are gone by late April. Peak: on about 2.1% of Washington checklists.

  1. Janpeak season
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  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%1%2%3%Jan 1-7: 1.6% of 41928 checklistsJan 8-14: 1.5% of 31152 checklistsJan 15-21: 1.4% of 31753 checklistsJan 22-31: 1.3% of 42530 checklistsFeb 1-7: 1.4% of 29739 checklistsFeb 8-14: 1.2% of 32746 checklistsFeb 15-21: 1.0% of 40328 checklistsFeb 22-28: 1.1% of 28432 checklistsMar 1-7: 1.1% of 30758 checklistsMar 8-14: 1.0% of 29368 checklistsMar 15-21: 1.0% of 32580 checklistsMar 22-31: 0.9% of 45614 checklistsApr 1-7: 1.0% of 33997 checklistsApr 8-14: 1.0% of 34729 checklistsApr 15-21: 1.0% of 38474 checklistsApr 22-30: 0.7% of 52185 checklistsMay 1-7: 0.5% of 44236 checklistsMay 8-14: 0.2% of 48708 checklistsMay 15-21: 0.1% of 41742 checklistsMay 22-31: 0.1% of 57082 checklistsJun 1-7: 0.1% of 39193 checklistsJun 8-14: 0.1% of 36042 checklistsJun 15-21: 0% of 34003 checklistsJun 22-30: 0% of 39711 checklistsJul 1-7: 0% of 31949 checklistsJul 8-14: 0% of 29086 checklistsJul 15-21: 0% of 28045 checklistsJul 22-31: 0% of 38275 checklistsAug 1-7: 0% of 28846 checklistsAug 8-14: 0% of 28036 checklistsAug 15-21: 0% of 27614 checklistsAug 22-31: 0.1% of 40356 checklistsSep 1-7: 0.1% of 31214 checklistsSep 8-14: 0.3% of 27795 checklistsSep 15-21: 0.7% of 29677 checklistsSep 22-30: 1.4% of 35241 checklistsOct 1-7: 1.7% of 28605 checklistsOct 8-14: 2.0% of 28655 checklistsOct 15-21: 2.0% of 24643 checklistsOct 22-31: 2.2% of 34874 checklistsNov 1-7: 1.8% of 25658 checklistsNov 8-14: 2.1% of 25700 checklistsNov 15-21: 1.9% of 24331 checklistsNov 22-30: 1.7% of 32784 checklistsDec 1-7: 1.7% of 24099 checklistsDec 8-14: 1.9% of 23339 checklistsDec 15-21: 1.8% of 27666 checklistsDec 22-31: 1.8% of 42130 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 Washington 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 Washington

Best counties

Share of checklists at the peak
  1. Wahkiakum CountyBest mid November · 66 checklists that week, 5,618 in all11%
  2. Lewis CountyBest the second week of November · 144 checklists that week, 12,910 in all8.1%
  3. Columbia CountyBest the second week of January · 20 checklists that week, 1,894 in all6.3%
  4. Clark CountyBest early November · 848 checklists that week, 53,250 in all5.6%
  5. Walla Walla CountyBest early October · 574 checklists that week, 35,829 in all5.4%
  6. Skamania CountyBest late October · 292 checklists that week, 10,140 in all4.0%

Best spots

Share of checklists at the peak
  1. Crescent LakeSnohomish County, best mid December · 26 checklists that week, 1,206 in all40%
  2. San Juan Islands National MonumentSan Juan County, best mid April · 52 checklists that week, 2,639 in all26%
  3. Central Washington FairgroundsYakima County, best late October · 25 checklists that week, 469 in all23%
  4. Tulalip BaySnohomish County, best late November · 50 checklists that week, 2,147 in all20%

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

Best time of day

In Washington, the White-throated Sparrow is most often listed on checklists started between 7 and 9 am (1.4% of those checklists).

0%0.5%1%1.5%12 am: too few checklists (796) to judge1 am: too few checklists (776) to judge2 am: too few checklists (709) to judge3 am: too few checklists (901) to judge4 am: too few checklists (3221) to judge5 am: too few checklists (16576) to judge6 am: 0.7% of 56744 checklists7 am: 1.5% of 133294 checklists8 am: 1.4% of 184196 checklists9 am: 1.1% of 186303 checklists10 am: 0.9% of 177063 checklists11 am: 0.8% of 154936 checklists12 pm: 0.7% of 138061 checklists1 pm: 0.7% of 127449 checklists2 pm: 0.6% of 121511 checklists3 pm: 0.7% of 107793 checklists4 pm: 0.6% of 82862 checklists5 pm: 0.4% of 57183 checklists6 pm: 0.2% of 39886 checklists7 pm: too few checklists (26969) to judge8 pm: too few checklists (12427) to judge9 pm: too few checklists (3658) to judge10 pm: too few checklists (1500) to judge11 pm: too few checklists (834) 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
January1.6%1.5%1.4%1.3%
February1.4%1.2%1.0%1.1%
March1.1%1.0%1.0%0.9%
April1.0%1.0%1.0%0.7%
May0.5%0.2%0.1%0.1%
June0.1%0.1%0%0%
July0%0%0%0%
August0%0%0%0.1%
September0.1%0.3%0.7%1.4%
October1.7%2.0%2.0%2.2%
November1.8%2.1%1.9%1.7%
December1.7%1.9%1.8%1.8%

Neighboring states

  • Oregon: arrives early October, 2 weeks later than Washington
  • Idaho: arrives mid September, in the same week than Washington
  • Montana: arrives early September, 2 weeks earlier than Washington
  • Nevada: arrives early October, 2 weeks later than Washington

Common questions

When do White-throated Sparrows arrive in Washington?
White-throated Sparrows are winter birds in Washington: they arrive in mid September, peak in mid October (2.1% of checklists), and most are gone by late April.
When do White-throated Sparrows leave Washington?
Most White-throated Sparrows have left Washington by late April, when reports fall below half their usual rate.
When is the best time to see a White-throated Sparrow in Washington?
The White-throated Sparrow is reported most often in mid October, on about 2.1% of Washington checklists.
Where in Washington are White-throated Sparrows seen most often?
By county, Wahkiakum County, Lewis County, and Columbia County have the highest peak reporting rates for the White-throated Sparrow (counties with at least 200 checklists).