WhenToBird

2 oriole species in Connecticut

When Do Orioles Arrive in Connecticut?

Adult male Baltimore Oriole
Photo: Daughter Dad, CC BY 4.0 via iNaturalist

Baltimore Orioles and Orchard Orioles are the orioles you are most likely to see in Connecticut. Baltimore Orioles mostly pass through Connecticut: they arrive in late April, peak in mid May (41% of checklists), and most are gone by late June.

Orioles here are the birds (Baltimore, Orchard, Bullock's and relatives), not the baseball team.

When to look

First arrivalsApr 22-30late April
Common byApr 22-30late April
PeakMay 15-21mid May
Most gone byJun 22-30late June

Best: mid May. First arrivals late April; most are gone by late June. Peak: on about 41% of Connecticut checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marnot usually seen
  4. Apruncommon
  5. Maypeak season
  6. Juncommon
  7. Juluncommon
  8. Auguncommon
  9. Seprare
  10. Octnot usually seen
  11. Novnot usually seen
  12. Decnot usually seen

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

Orioles in Connecticut, species by species

SpeciesFirst arrivalsCommon byPeakMost gone byPeak %
Baltimore OrioleApr 22-30Apr 22-30May 15-21Jun 22-3041%
Orchard OrioleApr 22-30Apr 22-30May 8-14Jul 8-145.9%
0%20%40%60%Baltimore OrioleOrchard OrioleJanFebMarAprMayJunJulAugSepOctNovDec
  • Baltimore Oriole
  • Orchard Oriole
Share of complete checklists reporting each species, by week (4 per month). Gaps: fewer than 10 checklists that week.

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.

Where in Connecticut

Best counties for Baltimore Oriole

Share of checklists at the peak
  1. Tolland CountyBest mid May · 1241 checklists that week, 39,004 in all50%
  2. Windham CountyBest mid May · 1029 checklists that week, 19,034 in all49%
  3. New London CountyBest mid May · 1754 checklists that week, 65,205 in all43%
  4. Litchfield CountyBest mid May · 2417 checklists that week, 69,766 in all43%
  5. New Haven CountyBest the second week of May · 5629 checklists that week, 139,721 in all42%
  6. Hartford CountyBest mid May · 3461 checklists that week, 105,735 in all41%

Common questions

When do orioles arrive in Connecticut?
Baltimore Orioles mostly pass through Connecticut: they arrive in late April, peak in mid May (41% of checklists), and most are gone by late June.
When do orioles leave Connecticut?
Most Baltimore Orioles have left Connecticut by late June, when reports fall below half their usual rate. Stragglers are still reported until early September.
When is the best time to see orioles in Connecticut?
The Baltimore Oriole is reported most often in mid May, on about 41% of Connecticut checklists.
Which orioles are in Connecticut?
Baltimore Oriole and Orchard Oriole are reported regularly; the Baltimore Oriole is the most common.