WhenToBird

Melospiza georgiana · Passerellidae

When Do Swamp Sparrows Arrive in New York?

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

Swamp Sparrows are winter birds in New York: the first arrive in the second week of March, they are common by early April, peak in the second week of October (18% of checklists), and most are gone by the second week of November.

When to look

First arrivalsMar 8-14the second week of March
Common byApr 1-7early April
PeakOct 8-14the second week of October
Most gone byNov 8-14the second week of November

Best: the second week of October. First arrivals the second week of March; most are gone by the second week of November. Peak: on about 18% of New York checklists.

  1. Janrare
  2. Febrare
  3. Maruncommon
  4. Aprpeak season
  5. Maypeak season
  6. Juncommon
  7. Julcommon
  8. Auguncommon
  9. Sepcommon
  10. Octpeak season
  11. Novcommon
  12. Decuncommon

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

0%5%10%15%20%Jan 1-7: 1.8% of 66410 checklistsJan 8-14: 1.6% of 49310 checklistsJan 15-21: 1.4% of 49919 checklistsJan 22-31: 1.6% of 62513 checklistsFeb 1-7: 1.4% of 43526 checklistsFeb 8-14: 1.1% of 49753 checklistsFeb 15-21: 0.7% of 65147 checklistsFeb 22-28: 0.9% of 50173 checklistsMar 1-7: 0.9% of 50325 checklistsMar 8-14: 1.0% of 55371 checklistsMar 15-21: 1.3% of 56293 checklistsMar 22-31: 2.5% of 82677 checklistsApr 1-7: 6.4% of 65295 checklistsApr 8-14: 11% of 73080 checklistsApr 15-21: 14% of 73857 checklistsApr 22-30: 17% of 106093 checklistsMay 1-7: 16% of 102772 checklistsMay 8-14: 13% of 110051 checklistsMay 15-21: 11% of 94797 checklistsMay 22-31: 9.5% of 101272 checklistsJun 1-7: 9.5% of 59471 checklistsJun 8-14: 10% of 55497 checklistsJun 15-21: 10% of 51761 checklistsJun 22-30: 9.7% of 59219 checklistsJul 1-7: 10% of 48226 checklistsJul 8-14: 11% of 42315 checklistsJul 15-21: 11% of 40637 checklistsJul 22-31: 9.2% of 57183 checklistsAug 1-7: 7.2% of 40461 checklistsAug 8-14: 5.0% of 39880 checklistsAug 15-21: 3.8% of 41146 checklistsAug 22-31: 3.7% of 63381 checklistsSep 1-7: 4.1% of 48640 checklistsSep 8-14: 4.5% of 47882 checklistsSep 15-21: 6.3% of 49063 checklistsSep 22-30: 11% of 57906 checklistsOct 1-7: 18% of 48447 checklistsOct 8-14: 19% of 51901 checklistsOct 15-21: 18% of 46717 checklistsOct 22-31: 15% of 61992 checklistsNov 1-7: 9.2% of 44593 checklistsNov 8-14: 5.9% of 42566 checklistsNov 15-21: 5.1% of 39675 checklistsNov 22-30: 3.9% of 51197 checklistsDec 1-7: 3.3% of 36567 checklistsDec 8-14: 3.2% of 37254 checklistsDec 15-21: 3.4% of 43754 checklistsDec 22-31: 2.7% of 62470 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 New York 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.

Embed this map on your site

Where in New York

Best counties

Share of checklists at the peak
  1. Seneca CountyBest mid July · 808 checklists that week, 47,387 in all43%
  2. Genesee CountyBest late May · 1173 checklists that week, 17,726 in all40%
  3. Kings CountyBest mid October · 3112 checklists that week, 134,897 in all39%
  4. Tioga CountyBest the second week of October · 313 checklists that week, 21,713 in all35%
  5. Richmond CountyBest mid October · 962 checklists that week, 55,926 in all34%
  6. Bronx CountyBest the second week of October · 486 checklists that week, 24,489 in all33%

Best spots

Share of checklists at the peak
  1. Town of Knox LandAlbany County, best late April · 40 checklists that week, 324 in all94%

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

Best time of day

In New York, the Swamp Sparrow is most often listed on checklists started between 6 and 8 am (11% of those checklists).

0%5%10%15%12 am: too few checklists (1146) to judge1 am: too few checklists (1055) to judge2 am: too few checklists (1121) to judge3 am: too few checklists (1353) to judge4 am: too few checklists (4785) to judge5 am: too few checklists (32052) to judge6 am: 13% of 124869 checklists7 am: 11% of 298506 checklists8 am: 10% of 337334 checklists9 am: 8.9% of 307787 checklists10 am: 7.4% of 270801 checklists11 am: 6.4% of 233238 checklists12 pm: 6.0% of 213830 checklists1 pm: 5.5% of 193321 checklists2 pm: 5.2% of 180741 checklists3 pm: 5.3% of 170348 checklists4 pm: 5.8% of 147224 checklists5 pm: 6.6% of 111962 checklists6 pm: 6.5% of 78261 checklists7 pm: too few checklists (44425) to judge8 pm: too few checklists (15648) to judge9 pm: too few checklists (4795) to judge10 pm: too few checklists (2454) to judge11 pm: too few checklists (1378) 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
January1.8%1.6%1.4%1.6%
February1.4%1.1%0.7%0.9%
March0.9%1.0%1.3%2.5%
April6.4%11%14%17%
May16%13%11%9.5%
June9.5%10%10%9.7%
July10%11%11%9.2%
August7.2%5.0%3.8%3.7%
September4.1%4.5%6.3%11%
October18%19%18%15%
November9.2%5.9%5.1%3.9%
December3.3%3.2%3.4%2.7%

Neighboring states

  • Connecticut: arrives mid March, 1 week later than New York
  • New Jersey: arrives mid September, 23 weeks earlier than New York
  • Pennsylvania: arrives the second week of September, 24 weeks earlier than New York
  • Vermont: arrives early April, 3 weeks later than New York

Common questions

When do Swamp Sparrows arrive in New York?
Swamp Sparrows are winter birds in New York: the first arrive in the second week of March, they are common by early April, peak in the second week of October (18% of checklists), and most are gone by the second week of November.
When do Swamp Sparrows leave New York?
Most Swamp Sparrows have left New York by the second week of November, when reports fall below half their usual rate. Stragglers are still reported until the second week of February.
When is the best time to see a Swamp Sparrow in New York?
The Swamp Sparrow is reported most often in the second week of October, on about 18% of New York checklists.
Where in New York are Swamp Sparrows seen most often?
By county, Seneca County, Genesee County, and Kings County have the highest peak reporting rates for the Swamp Sparrow (counties with at least 200 checklists).