WhenToBird

Calidris bairdii · Scolopacidae

When Do Baird's Sandpipers Arrive in Washington?

Adult Baird's Sandpiper
Photo: Dan Vickers, CC BY 4.0 via iNaturalist

Baird's Sandpipers mostly pass through Washington: they arrive in early August, peak in late August (3.2% of checklists), and most are gone by mid September.

When to look

First arrivalsAug 1-7early August
Common byAug 1-7early August
PeakAug 22-31late August
Most gone bySep 15-21mid September

Best: late August. First arrivals early August; most are gone by mid September. Peak: on about 3.2% of Washington checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marnot usually seen
  4. Aprnot usually seen
  5. Maynot usually seen
  6. Junnot usually seen
  7. Julrare
  8. Augpeak season
  9. Seppeak season
  10. Octrare
  11. Novnot usually seen
  12. Decnot usually seen

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

0%1%2%3%4%Jan 1-7: 0% of 41928 checklistsJan 8-14: 0% of 31152 checklistsJan 15-21: 0% of 31753 checklistsJan 22-31: 0% of 42530 checklistsFeb 1-7: 0% of 29739 checklistsFeb 8-14: 0% of 32746 checklistsFeb 15-21: 0% of 40328 checklistsFeb 22-28: 0% of 28432 checklistsMar 1-7: 0% of 30758 checklistsMar 8-14: 0% of 29368 checklistsMar 15-21: 0% of 32580 checklistsMar 22-31: 0% of 45614 checklistsApr 1-7: 0.1% of 33997 checklistsApr 8-14: 0.1% of 34729 checklistsApr 15-21: 0.1% of 38474 checklistsApr 22-30: 0.1% of 52185 checklistsMay 1-7: 0.1% of 44236 checklistsMay 8-14: 0.1% of 48708 checklistsMay 15-21: 0.1% of 41742 checklistsMay 22-31: 0.1% of 57082 checklistsJun 1-7: 0% of 39193 checklistsJun 8-14: 0% of 36042 checklistsJun 15-21: 0% of 34003 checklistsJun 22-30: 0% of 39711 checklistsJul 1-7: 0.1% of 31949 checklistsJul 8-14: 0.1% of 29086 checklistsJul 15-21: 0.1% of 28045 checklistsJul 22-31: 0.2% of 38275 checklistsAug 1-7: 0.8% of 28846 checklistsAug 8-14: 2.3% of 28036 checklistsAug 15-21: 2.5% of 27614 checklistsAug 22-31: 3.8% of 40356 checklistsSep 1-7: 2.9% of 31214 checklistsSep 8-14: 1.9% of 27795 checklistsSep 15-21: 0.7% of 29677 checklistsSep 22-30: 0.4% of 35241 checklistsOct 1-7: 0.1% of 28605 checklistsOct 8-14: 0.1% of 28655 checklistsOct 15-21: 0.1% of 24643 checklistsOct 22-31: 0% of 34874 checklistsNov 1-7: 0% of 25658 checklistsNov 8-14: 0% of 25700 checklistsNov 15-21: 0% of 24331 checklistsNov 22-30: 0% of 32784 checklistsDec 1-7: 0% of 24099 checklistsDec 8-14: 0% of 23339 checklistsDec 15-21: 0% of 27666 checklistsDec 22-31: 0% 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. Adams CountyBest mid August · 103 checklists that week, 4,574 in all27%
  2. Grant CountyBest mid August · 278 checklists that week, 19,963 in all22%
  3. Douglas CountyBest late August · 180 checklists that week, 9,418 in all13%
  4. Spokane CountyBest mid August · 607 checklists that week, 43,379 in all8.4%
  5. Franklin CountyBest the second week of September · 145 checklists that week, 7,970 in all7.2%
  6. Whitman CountyBest mid August · 346 checklists that week, 18,652 in all6.9%

Best spots

Share of checklists at the peak
  1. Washington State Department of Natural Resources (WADNR) State Resource Management Area (southeast)Grant County, best late August · 20 checklists that week, 697 in all73%
  2. Duck PondFranklin County, best mid September · 32 checklists that week, 149 in all65%
  3. Sheep LakeWhitman County, best late August · 20 checklists that week, 371 in all61%
  4. Saltese Flats Wetland Area (west)Spokane County, best mid August · 47 checklists that week, 1,083 in all61%
  5. Wenas LakeYakima County, best late August · 50 checklists that week, 541 in all55%

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

Best time of day

In Washington, the Baird's Sandpiper is most often listed on checklists started between 5 and 7 pm (0.5% of those checklists).

0%0.5%1%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: 0.5% of 56744 checklists7 am: 0.3% of 133294 checklists8 am: 0.3% of 184196 checklists9 am: 0.3% of 186303 checklists10 am: 0.3% of 177063 checklists11 am: 0.3% of 154936 checklists12 pm: 0.3% of 138061 checklists1 pm: 0.3% of 127449 checklists2 pm: 0.3% of 121511 checklists3 pm: 0.3% of 107793 checklists4 pm: 0.4% of 82862 checklists5 pm: 0.5% of 57183 checklists6 pm: 0.5% 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
January0%0%0%0%
February0%0%0%0%
March0%0%0%0%
April0.1%0.1%0.1%0.1%
May0.1%0.1%0.1%0.1%
June0%0%0%0%
July0.1%0.1%0.1%0.2%
August0.8%2.3%2.5%3.8%
September2.9%1.9%0.7%0.4%
October0.1%0.1%0.1%0%
November0%0%0%0%
December0%0%0%0%

Neighboring states

  • Oregon: arrives early August, in the same week than Washington
  • Idaho: arrives early August, in the same week than Washington
  • Montana: arrives late July, 1 week earlier than Washington
  • Nevada: arrives early August, in the same week than Washington

Common questions

When do Baird's Sandpipers arrive in Washington?
Baird's Sandpipers mostly pass through Washington: they arrive in early August, peak in late August (3.2% of checklists), and most are gone by mid September.
When do Baird's Sandpipers leave Washington?
Most Baird's Sandpipers have left Washington by mid September, when reports fall below half their usual rate.
When is the best time to see a Baird's Sandpiper in Washington?
The Baird's Sandpiper is reported most often in late August, on about 3.2% of Washington checklists.
Where in Washington are Baird's Sandpipers seen most often?
By county, Adams County, Grant County, and Douglas County have the highest peak reporting rates for the Baird's Sandpiper (counties with at least 200 checklists).