WhenToBird

Setophaga coronata · Parulidae

When Do Yellow-rumped Warblers Arrive in Oregon?

Adult Yellow-rumped Warbler
Photo: Jonathan Eisen, CC BY 4.0 via iNaturalist

Yellow-rumped Warblers are in Oregon all year, but most are here in spring: numbers build from late March, peak in mid April (33% of checklists), and fall back by early May. In the quietest week (early August) they are still on about 5.0% of checklists.

When to look

Numbers buildMar 22-31late March
PeakApr 15-21mid April
Fall back byMay 1-7early May
FewestAug 1-7early August

Best: mid April. Here all year; numbers build from late March and fall back by early May. Peak: on about 33% of Oregon checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprpeak season
  5. Maypeak season
  6. Jununcommon
  7. Juluncommon
  8. Auguncommon
  9. Sepcommon
  10. Octcommon
  11. Novcommon
  12. Deccommon

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

0%10%20%30%40%Jan 1-7: 13% of 34973 checklistsJan 8-14: 15% of 26807 checklistsJan 15-21: 15% of 26567 checklistsJan 22-31: 15% of 36019 checklistsFeb 1-7: 16% of 24020 checklistsFeb 8-14: 16% of 25765 checklistsFeb 15-21: 15% of 31019 checklistsFeb 22-28: 16% of 24582 checklistsMar 1-7: 16% of 24834 checklistsMar 8-14: 17% of 24642 checklistsMar 15-21: 17% of 27420 checklistsMar 22-31: 19% of 39913 checklistsApr 1-7: 21% of 28817 checklistsApr 8-14: 29% of 31221 checklistsApr 15-21: 36% of 34402 checklistsApr 22-30: 35% of 47144 checklistsMay 1-7: 25% of 37716 checklistsMay 8-14: 16% of 39651 checklistsMay 15-21: 10% of 37496 checklistsMay 22-31: 9.0% of 56967 checklistsJun 1-7: 8.4% of 35893 checklistsJun 8-14: 7.5% of 31880 checklistsJun 15-21: 8.6% of 30942 checklistsJun 22-30: 9.5% of 38478 checklistsJul 1-7: 8.5% of 27409 checklistsJul 8-14: 7.0% of 25161 checklistsJul 15-21: 6.5% of 25473 checklistsJul 22-31: 4.9% of 33920 checklistsAug 1-7: 4.7% of 24310 checklistsAug 8-14: 5.4% of 23675 checklistsAug 15-21: 5.3% of 23623 checklistsAug 22-31: 6.4% of 33762 checklistsSep 1-7: 8.1% of 25120 checklistsSep 8-14: 9.3% of 24458 checklistsSep 15-21: 13% of 25528 checklistsSep 22-30: 19% of 31631 checklistsOct 1-7: 23% of 25498 checklistsOct 8-14: 23% of 25161 checklistsOct 15-21: 20% of 23701 checklistsOct 22-31: 16% of 30996 checklistsNov 1-7: 13% of 21089 checklistsNov 8-14: 13% of 21880 checklistsNov 15-21: 12% of 21501 checklistsNov 22-30: 13% of 28930 checklistsDec 1-7: 14% of 19807 checklistsDec 8-14: 13% of 21022 checklistsDec 15-21: 13% of 24817 checklistsDec 22-31: 13% of 37592 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 Oregon 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 Oregon

Best counties

Share of checklists at the peak
  1. Crook CountyBest early October · 172 checklists that week, 9,466 in all61%
  2. Klamath CountyBest late September · 623 checklists that week, 26,875 in all56%
  3. Lake CountyBest early October · 234 checklists that week, 13,301 in all55%
  4. Wasco CountyBest mid April · 289 checklists that week, 13,127 in all50%
  5. Sherman CountyBest early October · 89 checklists that week, 4,629 in all49%
  6. Umatilla CountyBest late September · 340 checklists that week, 17,651 in all48%

Best spots

Share of checklists at the peak
  1. Whiskey SpringJefferson County, best mid June · 22 checklists that week, 435 in all97%
  2. Wagonwheel Hole (Oak Island)Columbia County, best mid April · 24 checklists that week, 368 in all97%
  3. Woodlawn Park (Piedmont)Multnomah County, best mid November · 62 checklists that week, 213 in all96%
  4. Wagonwheel HoleMultnomah County, best mid April · 85 checklists that week, 1,122 in all96%
  5. Whitaker Ponds Nature ParkMultnomah County, best mid April · 233 checklists that week, 6,890 in all95%

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

Best time of day

In Oregon, the Yellow-rumped Warbler is most often listed on checklists started between 8 and 10 am (17% of those checklists).

0%5%10%15%20%12 am: too few checklists (1505) to judge1 am: too few checklists (675) to judge2 am: too few checklists (626) to judge3 am: too few checklists (1641) to judge4 am: too few checklists (3696) to judge5 am: too few checklists (14524) to judge6 am: 14% of 50677 checklists7 am: 17% of 125347 checklists8 am: 18% of 163668 checklists9 am: 17% of 160351 checklists10 am: 16% of 148940 checklists11 am: 15% of 124743 checklists12 pm: 15% of 112537 checklists1 pm: 14% of 98999 checklists2 pm: 14% of 94690 checklists3 pm: 14% of 87923 checklists4 pm: 14% of 75235 checklists5 pm: 11% of 54504 checklists6 pm: 9.0% of 40469 checklists7 pm: 5.1% of 33675 checklists8 pm: too few checklists (18715) to judge9 pm: too few checklists (5839) to judge10 pm: too few checklists (2704) to judge11 pm: too few checklists (1549) 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
January13%15%15%15%
February16%16%15%16%
March16%17%17%19%
April21%29%36%35%
May25%16%10%9.0%
June8.4%7.5%8.6%9.5%
July8.5%7.0%6.5%4.9%
August4.7%5.4%5.3%6.4%
September8.1%9.3%13%19%
October23%23%20%16%
November13%13%12%13%
December14%13%13%13%

Neighboring states

  • Washington: arrives the second week of April, 2 weeks later than Oregon
  • Idaho: arrives the second week of September, 22 weeks later than Oregon
  • Nevada: year-round, peaks the second week of October
  • California: arrives mid September, 23 weeks later than Oregon

Common questions

When do Yellow-rumped Warblers arrive in Oregon?
Yellow-rumped Warblers are in Oregon all year, but most are here in spring: numbers build from late March, peak in mid April (33% of checklists), and fall back by early May. In the quietest week (early August) they are still on about 5.0% of checklists.
When do Yellow-rumped Warblers leave Oregon?
Yellow-rumped Warblers never fully leave Oregon: numbers fall back below half their usual rate by early May, but some are still reported in every week, about 5.0% of checklists at the low.
When is the best time to see a Yellow-rumped Warbler in Oregon?
The Yellow-rumped Warbler is reported most often in mid April, on about 33% of Oregon checklists.
Where in Oregon are Yellow-rumped Warblers seen most often?
By county, Crook County, Klamath County, and Lake County have the highest peak reporting rates for the Yellow-rumped Warbler (counties with at least 200 checklists).