WhenToBird

Spizella passerina · Passerellidae

When Do Chipping Sparrows Arrive in Connecticut?

Adult Chipping Sparrow
Photo: Shirley Zundell, CC BY 4.0 via iNaturalist

Chipping Sparrows reach Connecticut in early April, are common by the second week of April, peak in early May (38% of checklists), and most are gone by mid October.

When to look

First arrivalsApr 1-7early April
Common byApr 8-14the second week of April
PeakMay 1-7early May
Most gone byOct 15-21mid October

Best: early May. First arrivals early April; most are gone by mid October. Peak: on about 38% of Connecticut checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marrare
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Augcommon
  9. Sepuncommon
  10. Octcommon
  11. Novuncommon
  12. Decnot usually seen

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

0%10%20%30%40%Jan 1-7: 0.3% of 18950 checklistsJan 8-14: 0.5% of 13676 checklistsJan 15-21: 0.7% of 13377 checklistsJan 22-31: 0.6% of 17004 checklistsFeb 1-7: 0.3% of 10218 checklistsFeb 8-14: 0.5% of 11568 checklistsFeb 15-21: 0.4% of 15916 checklistsFeb 22-28: 0.4% of 11413 checklistsMar 1-7: 0.4% of 10754 checklistsMar 8-14: 0.4% of 12051 checklistsMar 15-21: 0.6% of 12616 checklistsMar 22-31: 1.1% of 17801 checklistsApr 1-7: 5.2% of 13186 checklistsApr 8-14: 18% of 14428 checklistsApr 15-21: 32% of 14738 checklistsApr 22-30: 40% of 21753 checklistsMay 1-7: 39% of 22494 checklistsMay 8-14: 36% of 23363 checklistsMay 15-21: 34% of 20219 checklistsMay 22-31: 32% of 20778 checklistsJun 1-7: 32% of 12234 checklistsJun 8-14: 33% of 12491 checklistsJun 15-21: 34% of 10856 checklistsJun 22-30: 35% of 11964 checklistsJul 1-7: 34% of 9437 checklistsJul 8-14: 32% of 8599 checklistsJul 15-21: 29% of 8252 checklistsJul 22-31: 25% of 11329 checklistsAug 1-7: 22% of 8116 checklistsAug 8-14: 18% of 8051 checklistsAug 15-21: 17% of 8502 checklistsAug 22-31: 14% of 13673 checklistsSep 1-7: 12% of 9873 checklistsSep 8-14: 12% of 9735 checklistsSep 15-21: 13% of 10120 checklistsSep 22-30: 14% of 12543 checklistsOct 1-7: 17% of 10735 checklistsOct 8-14: 17% of 10869 checklistsOct 15-21: 16% of 10436 checklistsOct 22-31: 11% of 13808 checklistsNov 1-7: 4.8% of 10507 checklistsNov 8-14: 2.3% of 9827 checklistsNov 15-21: 1.5% of 9904 checklistsNov 22-30: 1.4% of 13396 checklistsDec 1-7: 0.9% of 8974 checklistsDec 8-14: 0.9% of 9468 checklistsDec 15-21: 0.8% of 11614 checklistsDec 22-31: 0.5% of 16616 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 Connecticut 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 Connecticut

Best counties

Share of checklists at the peak
  1. Litchfield CountyBest early May · 2259 checklists that week, 69,766 in all54%
  2. Tolland CountyBest early July · 532 checklists that week, 39,004 in all54%
  3. Windham CountyBest early May · 858 checklists that week, 19,034 in all50%
  4. New London CountyBest early May · 1919 checklists that week, 65,205 in all47%
  5. Middlesex CountyBest early May · 1446 checklists that week, 39,919 in all45%
  6. Hartford CountyBest early May · 3783 checklists that week, 105,735 in all39%

Best spots

Share of checklists at the peak
  1. Mineral Spring BrookNew London County, best late June · 21 checklists that week, 470 in all100%
  2. Lake WackawanaFairfield County, best late April · 20 checklists that week, 304 in all98%
  3. Columbia Recreation AreaTolland County, best early May · 21 checklists that week, 273 in all97%
  4. Unionville Upper ReservoirHartford County, best mid May · 26 checklists that week, 210 in all96%
  5. Nepaug ReservoirHartford County, best mid May · 33 checklists that week, 1,156 in all91%
  6. Schreeder PondMiddlesex County, best late April · 60 checklists that week, 532 in all90%

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

Best time of day

In Connecticut, the Chipping Sparrow is most often listed on checklists started between 6 and 8 am (23% of those checklists).

0%10%20%30%12 am: too few checklists (325) to judge1 am: too few checklists (367) to judge2 am: too few checklists (488) to judge3 am: too few checklists (792) to judge4 am: too few checklists (2722) to judge5 am: too few checklists (9489) to judge6 am: 26% of 33657 checklists7 am: 21% of 62964 checklists8 am: 18% of 70645 checklists9 am: 15% of 64870 checklists10 am: 13% of 58827 checklists11 am: 11% of 51689 checklists12 pm: 11% of 45288 checklists1 pm: 10% of 44765 checklists2 pm: 10% of 44173 checklists3 pm: 11% of 41979 checklists4 pm: 14% of 33219 checklists5 pm: 20% of 24828 checklists6 pm: 22% of 15856 checklists7 pm: too few checklists (8126) to judge8 pm: too few checklists (1994) to judge9 pm: too few checklists (533) to judge10 pm: too few checklists (349) to judge11 pm: too few checklists (286) 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
January0.3%0.5%0.7%0.6%
February0.3%0.5%0.4%0.4%
March0.4%0.4%0.6%1.1%
April5.2%18%32%40%
May39%36%34%32%
June32%33%34%35%
July34%32%29%25%
August22%18%17%14%
September12%12%13%14%
October17%17%16%11%
November4.8%2.3%1.5%1.4%
December0.9%0.9%0.8%0.5%

Neighboring states

  • Rhode Island: arrives early April, in the same week than Connecticut
  • Massachusetts: arrives early April, in the same week than Connecticut
  • New Jersey: arrives mid March, 2 weeks earlier than Connecticut
  • New York: arrives late March, 1 week earlier than Connecticut

Common questions

When do Chipping Sparrows arrive in Connecticut?
Chipping Sparrows reach Connecticut in early April, are common by the second week of April, peak in early May (38% of checklists), and most are gone by mid October.
When do Chipping Sparrows leave Connecticut?
Most Chipping Sparrows have left Connecticut by mid October, when reports fall below half their usual rate. Stragglers are still reported until the second week of November.
When is the best time to see a Chipping Sparrow in Connecticut?
The Chipping Sparrow is reported most often in early May, on about 38% of Connecticut checklists.
Where in Connecticut are Chipping Sparrows seen most often?
By county, Litchfield County, Tolland County, and Windham County have the highest peak reporting rates for the Chipping Sparrow (counties with at least 200 checklists).