WhenToBird

Passerella iliaca · Passerellidae

When Do Fox Sparrows Arrive in New Hampshire?

Adult Fox Sparrow
Photo: Kevin Krebs, CC BY 4.0 via iNaturalist

Fox Sparrows arrive in New Hampshire in early March, peak in early April (3.7% of checklists), and most are gone by mid April.

When to look

First arrivalsMar 1-7early March
Common byMar 1-7early March
PeakApr 1-7early April
Most gone byApr 15-21mid April

Best: early April. First arrivals early March; most are gone by mid April. Peak: on about 3.7% of New Hampshire checklists.

  1. Janrare
  2. Febrare
  3. Marpeak season
  4. Aprpeak season
  5. Maynot usually seen
  6. Junrare
  7. Julrare
  8. Augnot usually seen
  9. Sepnot usually seen
  10. Octcommon
  11. Novpeak season
  12. Decuncommon

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

0%2%4%6%Jan 1-7: 0.3% of 8253 checklistsJan 8-14: 0.3% of 5998 checklistsJan 15-21: 0.4% of 5734 checklistsJan 22-31: 0.4% of 7776 checklistsFeb 1-7: 0.4% of 5253 checklistsFeb 8-14: 0.4% of 6802 checklistsFeb 15-21: 0.3% of 8852 checklistsFeb 22-28: 0.3% of 5792 checklistsMar 1-7: 0.4% of 6187 checklistsMar 8-14: 1.2% of 6977 checklistsMar 15-21: 2.4% of 7863 checklistsMar 22-31: 3.8% of 11746 checklistsApr 1-7: 3.9% of 9329 checklistsApr 8-14: 3.5% of 10499 checklistsApr 15-21: 1.4% of 10376 checklistsApr 22-30: 0.2% of 13086 checklistsMay 1-7: 0.1% of 13198 checklistsMay 8-14: 0.1% of 14980 checklistsMay 15-21: 0.1% of 12487 checklistsMay 22-31: 0.1% of 14294 checklistsJun 1-7: 0.1% of 8974 checklistsJun 8-14: 0.2% of 8395 checklistsJun 15-21: 0.3% of 7670 checklistsJun 22-30: 0.3% of 9188 checklistsJul 1-7: 0.3% of 7707 checklistsJul 8-14: 0.3% of 6554 checklistsJul 15-21: 0.2% of 6636 checklistsJul 22-31: 0.1% of 9599 checklistsAug 1-7: 0.1% of 6436 checklistsAug 8-14: 0.1% of 6477 checklistsAug 15-21: 0.1% of 6510 checklistsAug 22-31: 0.1% of 9762 checklistsSep 1-7: 0% of 6700 checklistsSep 8-14: 0% of 6012 checklistsSep 15-21: 0% of 6238 checklistsSep 22-30: 0.1% of 7619 checklistsOct 1-7: 0.1% of 6702 checklistsOct 8-14: 0.3% of 6863 checklistsOct 15-21: 0.9% of 6284 checklistsOct 22-31: 2.7% of 8287 checklistsNov 1-7: 3.7% of 7584 checklistsNov 8-14: 3.3% of 6056 checklistsNov 15-21: 4.2% of 5597 checklistsNov 22-30: 1.8% of 7140 checklistsDec 1-7: 1.1% of 4623 checklistsDec 8-14: 0.8% of 4920 checklistsDec 15-21: 0.7% of 6416 checklistsDec 22-31: 0.4% of 7659 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 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.

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 Hampshire

Best counties

Share of checklists at the peak
  1. Coos CountyBest the second week of November · 391 checklists that week, 27,719 in all7.9%
  2. Cheshire CountyBest early April · 1087 checklists that week, 39,834 in all6.5%
  3. Sullivan CountyBest early November · 244 checklists that week, 13,105 in all6.5%
  4. Carroll CountyBest the second week of April · 749 checklists that week, 30,580 in all5.4%
  5. Merrimack CountyBest the second week of November · 564 checklists that week, 36,980 in all4.7%
  6. Belknap CountyBest early April · 354 checklists that week, 13,295 in all4.6%

Best spots

Share of checklists at the peak
  1. Great Gulf Ext. Roadless AreaCoos County, best mid June · 25 checklists that week, 257 in all27%
  2. Connecticut River WetlandsCoos County, best early November · 34 checklists that week, 984 in all25%
  3. Hale CoveCarroll County, best early November · 61 checklists that week, 2,611 in all23%
  4. UNH - Horticulture FarmStrafford County, best late March · 25 checklists that week, 715 in all19%
  5. Bellamy River Wildlife Management Area - West - Lot 2Strafford County, best late March · 25 checklists that week, 866 in all17%

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

Best time of day

In New Hampshire, the Fox Sparrow is most often listed on checklists started between 6 and 8 am (1.2% of those checklists).

0%0.5%1%1.5%12 am: too few checklists (219) to judge1 am: too few checklists (192) to judge2 am: too few checklists (176) to judge3 am: too few checklists (234) to judge4 am: too few checklists (1042) to judge5 am: too few checklists (6352) to judge6 am: 1.0% of 23140 checklists7 am: 1.3% of 43401 checklists8 am: 1.0% of 48039 checklists9 am: 0.9% of 43328 checklists10 am: 0.8% of 37073 checklists11 am: 0.8% of 32028 checklists12 pm: 0.8% of 27396 checklists1 pm: 0.8% of 25182 checklists2 pm: 0.8% of 24318 checklists3 pm: 0.9% of 21974 checklists4 pm: 0.7% of 17958 checklists5 pm: 0.6% of 14528 checklists6 pm: 0.3% of 9144 checklists7 pm: too few checklists (5341) to judge8 pm: too few checklists (1845) to judge9 pm: too few checklists (578) to judge10 pm: too few checklists (346) to judge11 pm: too few checklists (256) 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%0.3%0.4%0.4%
February0.4%0.4%0.3%0.3%
March0.4%1.2%2.4%3.8%
April3.9%3.5%1.4%0.2%
May0.1%0.1%0.1%0.1%
June0.1%0.2%0.3%0.3%
July0.3%0.3%0.2%0.1%
August0.1%0.1%0.1%0.1%
September0%0%0%0.1%
October0.1%0.3%0.9%2.7%
November3.7%3.3%4.2%1.8%
December1.1%0.8%0.7%0.4%

Neighboring states

  • Massachusetts: arrives late October, 17 weeks earlier than New Hampshire
  • Vermont: arrives the second week of March, 1 week later than New Hampshire
  • Rhode Island: arrives the second week of November, 15 weeks earlier than New Hampshire
  • Maine: arrives early March, in the same week than New Hampshire

Common questions

When do Fox Sparrows arrive in New Hampshire?
Fox Sparrows arrive in New Hampshire in early March, peak in early April (3.7% of checklists), and most are gone by mid April.
When do Fox Sparrows leave New Hampshire?
Most Fox Sparrows have left New Hampshire by mid April, when reports fall below half their usual rate.
When is the best time to see a Fox Sparrow in New Hampshire?
The Fox Sparrow is reported most often in early April, on about 3.7% of New Hampshire checklists.
Where in New Hampshire are Fox Sparrows seen most often?
By county, Coos County, Cheshire County, and Sullivan County have the highest peak reporting rates for the Fox Sparrow (counties with at least 200 checklists).