WhenToBird

Melospiza georgiana · Passerellidae

When Do Swamp Sparrows Arrive in Kentucky?

Adult Swamp Sparrow
Photo: Sandra Keller, CC BY 4.0 via iNaturalist

Swamp Sparrows are winter birds in Kentucky: the first arrive in late September, they are common by early October, peak in late October (12% of checklists), and most are gone by late April.

When to look

First arrivalsSep 22-30late September
Common byOct 1-7early October
PeakOct 22-31late October
Most gone byApr 22-30late April

Best: late October. First arrivals late September; most are gone by late April. Peak: on about 12% of Kentucky checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  5. Mayuncommon
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Seprare
  10. Octpeak season
  11. Novpeak season
  12. Deccommon

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

0%5%10%15%Jan 1-7: 7.1% of 6923 checklistsJan 8-14: 5.9% of 4900 checklistsJan 15-21: 5.9% of 5016 checklistsJan 22-31: 5.5% of 6611 checklistsFeb 1-7: 5.7% of 4986 checklistsFeb 8-14: 4.4% of 5677 checklistsFeb 15-21: 3.1% of 8880 checklistsFeb 22-28: 4.5% of 5567 checklistsMar 1-7: 4.6% of 5397 checklistsMar 8-14: 4.8% of 5462 checklistsMar 15-21: 5.2% of 5733 checklistsMar 22-31: 5.2% of 9043 checklistsApr 1-7: 5.9% of 6763 checklistsApr 8-14: 6.1% of 7498 checklistsApr 15-21: 6.4% of 8486 checklistsApr 22-30: 4.5% of 13396 checklistsMay 1-7: 2.1% of 10825 checklistsMay 8-14: 1.0% of 11495 checklistsMay 15-21: 0.2% of 7363 checklistsMay 22-31: 0% of 8800 checklistsJun 1-7: 0% of 5381 checklistsJun 8-14: 0% of 5244 checklistsJun 15-21: 0% of 4730 checklistsJun 22-30: 0% of 5470 checklistsJul 1-7: 0% of 4567 checklistsJul 8-14: 0% of 4287 checklistsJul 15-21: 0% of 4097 checklistsJul 22-31: 0% of 6044 checklistsAug 1-7: 0% of 4647 checklistsAug 8-14: 0% of 4256 checklistsAug 15-21: 0% of 4484 checklistsAug 22-31: 0% of 6434 checklistsSep 1-7: 0% of 5450 checklistsSep 8-14: 0% of 5157 checklistsSep 15-21: 0% of 5530 checklistsSep 22-30: 0.6% of 6710 checklistsOct 1-7: 5.0% of 5403 checklistsOct 8-14: 9.4% of 5943 checklistsOct 15-21: 12% of 4873 checklistsOct 22-31: 13% of 6584 checklistsNov 1-7: 11% of 5008 checklistsNov 8-14: 9.3% of 4677 checklistsNov 15-21: 8.4% of 4419 checklistsNov 22-30: 8.4% of 5933 checklistsDec 1-7: 8.0% of 4479 checklistsDec 8-14: 7.4% of 4687 checklistsDec 15-21: 8.8% of 6239 checklistsDec 22-31: 8.3% of 7976 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 Kentucky 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 Kentucky

Best counties

Share of checklists at the peak
  1. Muhlenberg CountyBest early November · 15 checklists that week, 1,263 in all57%
  2. Union CountyBest mid January · 13 checklists that week, 747 in all54%
  3. Henderson CountyBest late October · 167 checklists that week, 7,604 in all50%
  4. Logan CountyBest early November · 24 checklists that week, 1,991 in all49%
  5. Mercer CountyBest late October · 42 checklists that week, 1,919 in all47%
  6. Fulton CountyBest the second week of December · 27 checklists that week, 1,443 in all40%

Best spots

Share of checklists at the peak
  1. Hardy Slough PondHenderson County, best mid October · 31 checklists that week, 915 in all93%
  2. Hisle Farm ParkFayette County, best late October · 47 checklists that week, 881 in all74%
  3. Clarks River National Wildlife RefugeMarshall County, best late March · 24 checklists that week, 587 in all69%
  4. The Parklands of Floyds ForkJefferson County, best mid November · 26 checklists that week, 2,245 in all68%
  5. Garvin Brown PreserveJefferson County, best mid November · 21 checklists that week, 1,398 in all66%
  6. Hays Kennedy ParkJefferson County, best the second week of October · 59 checklists that week, 2,332 in all59%

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

Best time of day

In Kentucky, the Swamp Sparrow is most often listed on checklists started between 8 and 10 am (5.2% of those checklists).

0%2%4%6%12 am: too few checklists (140) to judge1 am: too few checklists (120) to judge2 am: too few checklists (88) to judge3 am: too few checklists (95) to judge4 am: too few checklists (151) to judge5 am: too few checklists (1289) to judge6 am: 5.0% of 8227 checklists7 am: 4.4% of 24608 checklists8 am: 5.2% of 36577 checklists9 am: 5.2% of 34626 checklists10 am: 4.8% of 28796 checklists11 am: 4.6% of 22781 checklists12 pm: 3.9% of 19848 checklists1 pm: 3.9% of 19369 checklists2 pm: 4.1% of 19367 checklists3 pm: 3.8% of 19618 checklists4 pm: 3.5% of 19464 checklists5 pm: 2.8% of 16639 checklists6 pm: 1.6% of 12714 checklists7 pm: 0.6% of 8457 checklists8 pm: too few checklists (3447) to judge9 pm: too few checklists (684) to judge10 pm: too few checklists (267) to judge11 pm: too few checklists (158) 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
January7.1%5.9%5.9%5.5%
February5.7%4.4%3.1%4.5%
March4.6%4.8%5.2%5.2%
April5.9%6.1%6.4%4.5%
May2.1%1.0%0.2%0%
June0%0%0%0%
July0%0%0%0%
August0%0%0%0%
September0%0%0%0.6%
October5.0%9.4%12%13%
November11%9.3%8.4%8.4%
December8.0%7.4%8.8%8.3%

Neighboring states

  • Tennessee: arrives early October, 1 week later than Kentucky
  • Indiana: arrives mid September, 1 week earlier than Kentucky
  • Ohio: arrives mid September, 1 week earlier than Kentucky
  • Illinois: arrives the second week of September, 2 weeks earlier than Kentucky

Common questions

When do Swamp Sparrows arrive in Kentucky?
Swamp Sparrows are winter birds in Kentucky: the first arrive in late September, they are common by early October, peak in late October (12% of checklists), and most are gone by late April.
When do Swamp Sparrows leave Kentucky?
Most Swamp Sparrows have left Kentucky by late April, when reports fall below half their usual rate. Stragglers are still reported until the second week of May.
When is the best time to see a Swamp Sparrow in Kentucky?
The Swamp Sparrow is reported most often in late October, on about 12% of Kentucky checklists.
Where in Kentucky are Swamp Sparrows seen most often?
By county, Muhlenberg County, Union County, and Henderson County have the highest peak reporting rates for the Swamp Sparrow (counties with at least 200 checklists).