WhenToBird

2 oriole species in New Hampshire

When Do Orioles Arrive in New Hampshire?

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

Baltimore Orioles mostly pass through New Hampshire: the first show up in late April, they are common by early May, peak in mid May (28% of checklists), and most are gone by early July. They are by far the most reported orioles in New Hampshire.

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

When to look

First arrivalsApr 22-30late April
Common byMay 1-7early May
PeakMay 15-21mid May
Most gone byJul 1-7early July

Best: mid May. First arrivals late April; most are gone by early July. Peak: on about 28% of New Hampshire 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 New Hampshire, species by species

SpeciesFirst arrivalsCommon byPeakMost gone byPeak %
Baltimore OrioleApr 22-30May 1-7May 15-21Jul 1-728%
Orchard OrioleMay 1-7May 1-7May 15-21Jul 8-142.4%
0%10%20%30%40%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 New Hampshire 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 New Hampshire

Best counties for Baltimore Oriole

Share of checklists at the peak
  1. Strafford CountyBest mid May · 1341 checklists that week, 41,888 in all42%
  2. Hillsborough CountyBest mid May · 1647 checklists that week, 50,125 in all39%
  3. Rockingham CountyBest mid May · 2693 checklists that week, 84,864 in all36%
  4. Merrimack CountyBest mid May · 1207 checklists that week, 36,980 in all32%
  5. Cheshire CountyBest mid May · 1135 checklists that week, 39,834 in all31%
  6. Belknap CountyBest late May · 424 checklists that week, 13,295 in all28%

Common questions

When do orioles arrive in New Hampshire?
Baltimore Orioles mostly pass through New Hampshire: the first show up in late April, they are common by early May, peak in mid May (28% of checklists), and most are gone by early July. They are by far the most reported orioles in New Hampshire.
When do orioles leave New Hampshire?
Most Baltimore Orioles have left New Hampshire by early July, when reports fall below half their usual rate. Stragglers are still reported until early September.
When is the best time to see orioles in New Hampshire?
The Baltimore Oriole is reported most often in mid May, on about 28% of New Hampshire checklists.
Which orioles are in New Hampshire?
Baltimore Oriole and Orchard Oriole are reported regularly; the Baltimore Oriole is the most common.