WhenToBird

Turdus migratorius · Turdidae

When Do American Robins Arrive in Connecticut?

Adult male American Robin
Photo: northerly, CC BY 4.0 via iNaturalist

American Robins are in Connecticut all year, but most are here in spring: numbers build from mid March, peak in early May (72% of checklists), and fall back by early August. In the quietest week (the second week of January) they are still on about 16% of checklists.

When to look

Numbers buildMar 15-21mid March
PeakMay 1-7early May
Fall back byAug 1-7early August
FewestJan 8-14the second week of January

Best: early May. Here all year; numbers build from mid March and fall back by early August. Peak: on about 72% of Connecticut checklists.

  1. Januncommon
  2. Febuncommon
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Augcommon
  9. Sepcommon
  10. Octcommon
  11. Novcommon
  12. Decuncommon

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

0%20%40%60%80%Jan 1-7: 16% of 18950 checklistsJan 8-14: 16% of 13676 checklistsJan 15-21: 17% of 13377 checklistsJan 22-31: 19% of 17004 checklistsFeb 1-7: 19% of 10218 checklistsFeb 8-14: 18% of 11568 checklistsFeb 15-21: 19% of 15916 checklistsFeb 22-28: 24% of 11413 checklistsMar 1-7: 27% of 10754 checklistsMar 8-14: 36% of 12051 checklistsMar 15-21: 49% of 12616 checklistsMar 22-31: 58% of 17801 checklistsApr 1-7: 63% of 13186 checklistsApr 8-14: 67% of 14428 checklistsApr 15-21: 69% of 14738 checklistsApr 22-30: 72% of 21753 checklistsMay 1-7: 73% of 22494 checklistsMay 8-14: 72% of 23363 checklistsMay 15-21: 70% of 20219 checklistsMay 22-31: 70% of 20778 checklistsJun 1-7: 68% of 12234 checklistsJun 8-14: 68% of 12491 checklistsJun 15-21: 66% of 10856 checklistsJun 22-30: 67% of 11964 checklistsJul 1-7: 65% of 9437 checklistsJul 8-14: 64% of 8599 checklistsJul 15-21: 58% of 8252 checklistsJul 22-31: 53% of 11329 checklistsAug 1-7: 45% of 8116 checklistsAug 8-14: 36% of 8051 checklistsAug 15-21: 32% of 8502 checklistsAug 22-31: 29% of 13673 checklistsSep 1-7: 27% of 9873 checklistsSep 8-14: 27% of 9735 checklistsSep 15-21: 29% of 10120 checklistsSep 22-30: 31% of 12543 checklistsOct 1-7: 35% of 10735 checklistsOct 8-14: 35% of 10869 checklistsOct 15-21: 38% of 10436 checklistsOct 22-31: 41% of 13808 checklistsNov 1-7: 43% of 10507 checklistsNov 8-14: 37% of 9827 checklistsNov 15-21: 31% of 9904 checklistsNov 22-30: 24% of 13396 checklistsDec 1-7: 20% of 8974 checklistsDec 8-14: 19% of 9468 checklistsDec 15-21: 22% of 11614 checklistsDec 22-31: 19% 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. New Haven CountyBest early May · 5748 checklists that week, 139,721 in all77%
  2. Hartford CountyBest early May · 3783 checklists that week, 105,735 in all76%
  3. Fairfield CountyBest early May · 4881 checklists that week, 139,848 in all73%
  4. Tolland CountyBest the second week of May · 1577 checklists that week, 39,004 in all72%
  5. Litchfield CountyBest mid May · 2417 checklists that week, 69,766 in all70%
  6. New London CountyBest the second week of May · 2092 checklists that week, 65,205 in all67%

Best spots

Share of checklists at the peak
  1. Samp Mortar ReservoirFairfield County, best early April · 25 checklists that week, 336 in all100%
  2. Brooksvale StreamNew Haven County, best mid July · 23 checklists that week, 167 in all100%
  3. Quinebaug Fish HatcheryWindham County, best mid May · 22 checklists that week, 1,048 in all100%
  4. Sasco CreekFairfield County, best early May · 25 checklists that week, 899 in all100%

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

Best time of day

In Connecticut, the American Robin is most often listed on checklists started between 6 and 8 am (55% of those checklists).

0%20%40%60%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: 58% of 33657 checklists7 am: 53% of 62964 checklists8 am: 50% of 70645 checklists9 am: 44% of 64870 checklists10 am: 40% of 58827 checklists11 am: 36% of 51689 checklists12 pm: 35% of 45288 checklists1 pm: 35% of 44765 checklists2 pm: 35% of 44173 checklists3 pm: 36% of 41979 checklists4 pm: 43% of 33219 checklists5 pm: 52% of 24828 checklists6 pm: 55% 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
January16%16%17%19%
February19%18%19%24%
March27%36%49%58%
April63%67%69%72%
May73%72%70%70%
June68%68%66%67%
July65%64%58%53%
August45%36%32%29%
September27%27%29%31%
October35%35%38%41%
November43%37%31%24%
December20%19%22%19%

Neighboring states

  • Rhode Island: arrives mid March, in the same week than Connecticut
  • Massachusetts: arrives mid March, in the same week than Connecticut
  • New Jersey: arrives the second week of March, 1 week earlier than Connecticut
  • New York: arrives mid March, in the same week than Connecticut

Common questions

When do American Robins arrive in Connecticut?
American Robins are in Connecticut all year, but most are here in spring: numbers build from mid March, peak in early May (72% of checklists), and fall back by early August. In the quietest week (the second week of January) they are still on about 16% of checklists.
When do American Robins leave Connecticut?
American Robins never fully leave Connecticut: numbers fall back below half their usual rate by early August, but some are still reported in every week, about 16% of checklists at the low.
When is the best time to see a American Robin in Connecticut?
The American Robin is reported most often in early May, on about 72% of Connecticut checklists.
Where in Connecticut are American Robins seen most often?
By county, New Haven County, Hartford County, and Fairfield County have the highest peak reporting rates for the American Robin (counties with at least 200 checklists).