WhenToBird

Setophaga townsendi · Parulidae

When Do Townsend's Warblers Arrive in Oregon?

Adult male Townsend's Warbler
Photo: Peter Chen 2.0, CC BY 4.0 via iNaturalist

Townsend's Warblers are winter birds in Oregon: the first arrive in late August, they are common by the second week of September, peak in early January (5.9% of checklists), and most are gone by early June.

When to look

First arrivalsAug 22-31late August
Common bySep 8-14the second week of September
PeakJan 1-7early January
Most gone byJun 1-7early June

Best: early January. First arrivals late August; most are gone by early June. Peak: on about 5.9% of Oregon checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marcommon
  4. Aprcommon
  5. Maycommon
  6. Jununcommon
  7. Juluncommon
  8. Auguncommon
  9. Sepcommon
  10. Octcommon
  11. Novcommon
  12. Decpeak season

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

0%2%4%6%Jan 1-7: 5.8% of 34973 checklistsJan 8-14: 5.9% of 26807 checklistsJan 15-21: 5.1% of 26567 checklistsJan 22-31: 4.8% of 36019 checklistsFeb 1-7: 4.6% of 24020 checklistsFeb 8-14: 5.2% of 25765 checklistsFeb 15-21: 5.3% of 31019 checklistsFeb 22-28: 4.6% of 24582 checklistsMar 1-7: 4.1% of 24834 checklistsMar 8-14: 3.4% of 24642 checklistsMar 15-21: 3.0% of 27420 checklistsMar 22-31: 3.5% of 39913 checklistsApr 1-7: 4.0% of 28817 checklistsApr 8-14: 3.9% of 31221 checklistsApr 15-21: 3.9% of 34402 checklistsApr 22-30: 3.9% of 47144 checklistsMay 1-7: 4.4% of 37716 checklistsMay 8-14: 4.1% of 39651 checklistsMay 15-21: 4.1% of 37496 checklistsMay 22-31: 3.1% of 56967 checklistsJun 1-7: 1.6% of 35893 checklistsJun 8-14: 1.3% of 31880 checklistsJun 15-21: 1.9% of 30942 checklistsJun 22-30: 1.7% of 38478 checklistsJul 1-7: 0.9% of 27409 checklistsJul 8-14: 0.4% of 25161 checklistsJul 15-21: 0.3% of 25473 checklistsJul 22-31: 0.3% of 33920 checklistsAug 1-7: 0.4% of 24310 checklistsAug 8-14: 0.6% of 23675 checklistsAug 15-21: 0.8% of 23623 checklistsAug 22-31: 1.1% of 33762 checklistsSep 1-7: 1.6% of 25120 checklistsSep 8-14: 2.3% of 24458 checklistsSep 15-21: 2.9% of 25528 checklistsSep 22-30: 3.2% of 31631 checklistsOct 1-7: 3.8% of 25498 checklistsOct 8-14: 3.5% of 25161 checklistsOct 15-21: 2.9% of 23701 checklistsOct 22-31: 2.8% of 30996 checklistsNov 1-7: 3.0% of 21089 checklistsNov 8-14: 3.1% of 21880 checklistsNov 15-21: 3.6% of 21501 checklistsNov 22-30: 4.1% of 28930 checklistsDec 1-7: 4.8% of 19807 checklistsDec 8-14: 5.6% of 21022 checklistsDec 15-21: 5.5% of 24817 checklistsDec 22-31: 6.0% 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. Coos CountyBest the second week of January · 419 checklists that week, 24,368 in all17%
  2. Umatilla CountyBest early July · 323 checklists that week, 17,651 in all15%
  3. Curry CountyBest early December · 161 checklists that week, 12,513 in all14%
  4. Wallowa CountyBest late June · 393 checklists that week, 9,170 in all13%
  5. Lincoln CountyBest mid December · 1036 checklists that week, 66,994 in all12%
  6. Clatsop CountyBest mid December · 779 checklists that week, 44,300 in all11%

Best spots

Share of checklists at the peak
  1. Glen OakLane County, best mid January · 22 checklists that week, 102 in all93%
  2. Skinner Butte ParkLane County, best early April · 121 checklists that week, 2,638 in all69%
  3. Blue Mountain Forest State Scenic CorridorUmatilla County, best late June · 21 checklists that week, 189 in all65%
  4. Yaquina Bay State Recreation SiteLincoln County, best the second week of December · 50 checklists that week, 646 in all64%

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

Best time of day

In Oregon, the Townsend's Warbler is most often listed on checklists started between 7 and 9 am (4.4% of those checklists).

0%2%4%6%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: 3.3% of 50677 checklists7 am: 4.3% of 125347 checklists8 am: 4.5% of 163668 checklists9 am: 4.0% of 160351 checklists10 am: 3.5% of 148940 checklists11 am: 3.3% of 124743 checklists12 pm: 3.3% of 112537 checklists1 pm: 3.2% of 98999 checklists2 pm: 3.0% of 94690 checklists3 pm: 3.0% of 87923 checklists4 pm: 3.0% of 75235 checklists5 pm: 1.7% of 54504 checklists6 pm: 1.1% of 40469 checklists7 pm: 0.5% 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
January5.8%5.9%5.1%4.8%
February4.6%5.2%5.3%4.6%
March4.1%3.4%3.0%3.5%
April4.0%3.9%3.9%3.9%
May4.4%4.1%4.1%3.1%
June1.6%1.3%1.9%1.7%
July0.9%0.4%0.3%0.3%
August0.4%0.6%0.8%1.1%
September1.6%2.3%2.9%3.2%
October3.8%3.5%2.9%2.8%
November3.0%3.1%3.6%4.1%
December4.8%5.6%5.5%6.0%

Neighboring states

  • Washington: arrives the second week of August, 2 weeks earlier than Oregon
  • Idaho: arrives early May, 15 weeks earlier than Oregon
  • Nevada: arrives late April, 16 weeks earlier than Oregon
  • California: arrives mid August, 1 week earlier than Oregon

Common questions

When do Townsend's Warblers arrive in Oregon?
Townsend's Warblers are winter birds in Oregon: the first arrive in late August, they are common by the second week of September, peak in early January (5.9% of checklists), and most are gone by early June.
When do Townsend's Warblers leave Oregon?
Most Townsend's Warblers have left Oregon by early June, when reports fall below half their usual rate. Stragglers are still reported until early July.
When is the best time to see a Townsend's Warbler in Oregon?
The Townsend's Warbler is reported most often in early January, on about 5.9% of Oregon checklists.
Where in Oregon are Townsend's Warblers seen most often?
By county, Coos County, Umatilla County, and Curry County have the highest peak reporting rates for the Townsend's Warbler (counties with at least 200 checklists).