WhenToBird

Spizella pusilla · Passerellidae

When Do Field Sparrows Arrive in Oklahoma?

Adult Field Sparrow
Photo: walkingfern, CC0 1.0 via iNaturalist

Field Sparrows are winter birds in Oklahoma: the first arrive in the second week of October, they are common by mid October, peak in late March (8.0% of checklists), and most are gone by the second week of August.

When to look

First arrivalsOct 8-14the second week of October
Common byOct 15-21mid October
PeakMar 22-31late March
Most gone byAug 8-14the second week of August

Best: late March. First arrivals the second week of October; most are gone by the second week of August. Peak: on about 8.0% of Oklahoma checklists.

  1. Jancommon
  2. Febcommon
  3. Marpeak season
  4. Aprpeak season
  5. Maycommon
  6. Juncommon
  7. Julcommon
  8. Augcommon
  9. Sepuncommon
  10. Octcommon
  11. Novpeak season
  12. Deccommon

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

0%5%10%Jan 1-7: 4.4% of 6087 checklistsJan 8-14: 3.7% of 4350 checklistsJan 15-21: 4.2% of 4381 checklistsJan 22-31: 4.5% of 6165 checklistsFeb 1-7: 4.0% of 4259 checklistsFeb 8-14: 3.4% of 4589 checklistsFeb 15-21: 3.7% of 7001 checklistsFeb 22-28: 4.2% of 4482 checklistsMar 1-7: 5.1% of 4724 checklistsMar 8-14: 5.1% of 4571 checklistsMar 15-21: 7.2% of 4393 checklistsMar 22-31: 8.3% of 7544 checklistsApr 1-7: 8.2% of 5967 checklistsApr 8-14: 7.5% of 6543 checklistsApr 15-21: 6.7% of 7366 checklistsApr 22-30: 5.4% of 10618 checklistsMay 1-7: 4.9% of 8835 checklistsMay 8-14: 4.3% of 8247 checklistsMay 15-21: 4.4% of 6081 checklistsMay 22-31: 4.9% of 7283 checklistsJun 1-7: 5.2% of 4256 checklistsJun 8-14: 6.0% of 3774 checklistsJun 15-21: 5.2% of 3541 checklistsJun 22-30: 4.9% of 4159 checklistsJul 1-7: 4.4% of 3209 checklistsJul 8-14: 3.4% of 2916 checklistsJul 15-21: 3.5% of 2861 checklistsJul 22-31: 3.7% of 4146 checklistsAug 1-7: 4.1% of 3043 checklistsAug 8-14: 3.1% of 2839 checklistsAug 15-21: 2.9% of 3014 checklistsAug 22-31: 2.0% of 4759 checklistsSep 1-7: 1.2% of 3861 checklistsSep 8-14: 1.4% of 3748 checklistsSep 15-21: 0.8% of 3569 checklistsSep 22-30: 1.2% of 4830 checklistsOct 1-7: 1.3% of 3809 checklistsOct 8-14: 1.7% of 4142 checklistsOct 15-21: 3.0% of 3705 checklistsOct 22-31: 5.5% of 4738 checklistsNov 1-7: 7.2% of 3823 checklistsNov 8-14: 5.5% of 3849 checklistsNov 15-21: 4.6% of 3722 checklistsNov 22-30: 4.8% of 4795 checklistsDec 1-7: 4.2% of 3324 checklistsDec 8-14: 5.0% of 3574 checklistsDec 15-21: 5.1% of 3884 checklistsDec 22-31: 4.7% of 5774 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 Oklahoma 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 Oklahoma

Best counties

Share of checklists at the peak
  1. Adair CountyBest late March · 16 checklists that week, 616 in all56%
  2. Roger Mills CountyBest the second week of June · 20 checklists that week, 445 in all45%
  3. Pontotoc CountyBest late January · 11 checklists that week, 308 in all41%
  4. Pawnee CountyBest mid June · 10 checklists that week, 948 in all40%
  5. Noble CountyBest early June · 10 checklists that week, 1,320 in all36%
  6. Ellis CountyBest late June · 11 checklists that week, 357 in all36%

Best spots

Share of checklists at the peak
  1. TulsaTulsa County, best early April · 34 checklists that week, 1,288 in all78%
  2. Myriad GardensOklahoma County, best early April · 22 checklists that week, 911 in all48%
  3. Mitch ParkOklahoma County, best late December · 22 checklists that week, 410 in all48%
  4. Lake Thunderbird State Park (east)Cleveland County, best early January · 27 checklists that week, 338 in all43%
  5. Arcadia Conservation Education AreaOklahoma County, best the second week of May · 20 checklists that week, 306 in all40%
  6. CLO LandsPayne County, best mid June · 26 checklists that week, 1,208 in all35%

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

Best time of day

In Oklahoma, the Field Sparrow is most often listed on checklists started between 6 and 8 am (7.2% of those checklists).

0%5%10%12 am: too few checklists (91) to judge1 am: too few checklists (65) to judge2 am: too few checklists (73) to judge3 am: too few checklists (73) to judge4 am: too few checklists (100) to judge5 am: too few checklists (647) to judge6 am: 9.8% of 8353 checklists7 am: 6.3% of 24509 checklists8 am: 5.5% of 27848 checklists9 am: 5.0% of 25316 checklists10 am: 4.7% of 21161 checklists11 am: 4.3% of 18730 checklists12 pm: 4.5% of 16097 checklists1 pm: 4.0% of 14028 checklists2 pm: 3.9% of 13599 checklists3 pm: 3.9% of 14228 checklists4 pm: 3.2% of 14597 checklists5 pm: 2.5% of 12125 checklists6 pm: 2.3% of 9337 checklists7 pm: 2.3% of 6944 checklists8 pm: too few checklists (2403) to judge9 pm: too few checklists (459) to judge10 pm: too few checklists (226) to judge11 pm: too few checklists (141) 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
January4.4%3.7%4.2%4.5%
February4.0%3.4%3.7%4.2%
March5.1%5.1%7.2%8.3%
April8.2%7.5%6.7%5.4%
May4.9%4.3%4.4%4.9%
June5.2%6.0%5.2%4.9%
July4.4%3.4%3.5%3.7%
August4.1%3.1%2.9%2.0%
September1.2%1.4%0.8%1.2%
October1.3%1.7%3.0%5.5%
November7.2%5.5%4.6%4.8%
December4.2%5.0%5.1%4.7%

Neighboring states

  • Kansas: arrives early March, 19 weeks later than Oklahoma
  • Arkansas: arrives the second week of October, in the same week than Oklahoma
  • Missouri: arrives early March, 19 weeks later than Oklahoma
  • Nebraska: arrives late March, 22 weeks later than Oklahoma

Common questions

When do Field Sparrows arrive in Oklahoma?
Field Sparrows are winter birds in Oklahoma: the first arrive in the second week of October, they are common by mid October, peak in late March (8.0% of checklists), and most are gone by the second week of August.
When do Field Sparrows leave Oklahoma?
Most Field Sparrows have left Oklahoma by the second week of August, when reports fall below half their usual rate. Stragglers are still reported until early September.
When is the best time to see a Field Sparrow in Oklahoma?
The Field Sparrow is reported most often in late March, on about 8.0% of Oklahoma checklists.
Where in Oklahoma are Field Sparrows seen most often?
By county, Adair County, Roger Mills County, and Pontotoc County have the highest peak reporting rates for the Field Sparrow (counties with at least 200 checklists).