WhenToBird

Certhia americana · Certhiidae

When Do Brown Creepers Arrive in New Jersey?

Adult Brown Creeper
Photo: Melanie Gaddy, CC0 1.0 via iNaturalist

Brown Creepers are winter birds in New Jersey: the first arrive in late September, they are common by early October, peak in mid October (7.5% of checklists), and most are gone by the second week of April.

When to look

First arrivalsSep 22-30late September
Common byOct 1-7early October
PeakOct 15-21mid October
Most gone byApr 8-14the second week of April

Best: mid October. First arrivals late September; most are gone by the second week of April. Peak: on about 7.5% of New Jersey checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  5. Mayrare
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepuncommon
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

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

0%2%4%6%8%Jan 1-7: 4.2% of 28167 checklistsJan 8-14: 4.4% of 20583 checklistsJan 15-21: 4.2% of 19739 checklistsJan 22-31: 4.8% of 24586 checklistsFeb 1-7: 4.2% of 17226 checklistsFeb 8-14: 3.7% of 19567 checklistsFeb 15-21: 3.4% of 26553 checklistsFeb 22-28: 3.6% of 19046 checklistsMar 1-7: 3.7% of 17969 checklistsMar 8-14: 3.6% of 18976 checklistsMar 15-21: 4.4% of 18581 checklistsMar 22-31: 5.5% of 27590 checklistsApr 1-7: 6.1% of 21202 checklistsApr 8-14: 4.1% of 23609 checklistsApr 15-21: 1.8% of 25056 checklistsApr 22-30: 0.5% of 36679 checklistsMay 1-7: 0.3% of 38378 checklistsMay 8-14: 0.2% of 44071 checklistsMay 15-21: 0.1% of 34076 checklistsMay 22-31: 0.2% of 32558 checklistsJun 1-7: 0.1% of 18049 checklistsJun 8-14: 0.2% of 15597 checklistsJun 15-21: 0.2% of 14894 checklistsJun 22-30: 0.2% of 17187 checklistsJul 1-7: 0.2% of 13406 checklistsJul 8-14: 0.1% of 12550 checklistsJul 15-21: 0.1% of 12358 checklistsJul 22-31: 0.1% of 18382 checklistsAug 1-7: 0.1% of 13689 checklistsAug 8-14: 0.1% of 14006 checklistsAug 15-21: 0.1% of 14483 checklistsAug 22-31: 0.1% of 23182 checklistsSep 1-7: 0.1% of 17984 checklistsSep 8-14: 0.1% of 18320 checklistsSep 15-21: 0.4% of 20491 checklistsSep 22-30: 1.7% of 26176 checklistsOct 1-7: 4.8% of 24112 checklistsOct 8-14: 7.4% of 24603 checklistsOct 15-21: 7.9% of 24549 checklistsOct 22-31: 7.1% of 26206 checklistsNov 1-7: 6.2% of 17469 checklistsNov 8-14: 5.9% of 15102 checklistsNov 15-21: 5.8% of 14958 checklistsNov 22-30: 6.1% of 19447 checklistsDec 1-7: 5.6% of 14017 checklistsDec 8-14: 6.0% of 14625 checklistsDec 15-21: 6.2% of 16937 checklistsDec 22-31: 5.8% of 26651 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 Jersey 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 New Jersey

Best counties

Share of checklists at the peak
  1. Passaic CountyBest the second week of April · 778 checklists that week, 24,933 in all21%
  2. Burlington CountyBest early November · 865 checklists that week, 52,358 in all14%
  3. Hunterdon CountyBest early December · 1068 checklists that week, 57,610 in all12%
  4. Ocean CountyBest the second week of October · 1325 checklists that week, 87,340 in all11%
  5. Salem CountyBest mid November · 74 checklists that week, 9,658 in all11%
  6. Camden CountyBest mid December · 371 checklists that week, 25,931 in all10%

Best spots

Share of checklists at the peak
  1. Garret Mountain ReservationPassaic County, best early April · 208 checklists that week, 5,614 in all62%
  2. Island Beach State Park (north)Ocean County, best mid October · 32 checklists that week, 1,171 in all52%
  3. Passaic River ParkUnion County, best late December · 34 checklists that week, 511 in all45%
  4. Amico IslandBurlington County, best mid December · 20 checklists that week, 1,787 in all44%
  5. Wright CoveBurlington County, best mid November · 21 checklists that week, 793 in all43%
  6. Lake LonnieBurlington County, best late December · 24 checklists that week, 234 in all43%

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

Best time of day

In New Jersey, the Brown Creeper is most often listed on checklists started between 7 and 9 am (3.7% of those checklists).

0%1%2%3%4%12 am: too few checklists (746) to judge1 am: too few checklists (640) to judge2 am: too few checklists (606) to judge3 am: too few checklists (755) to judge4 am: too few checklists (1681) to judge5 am: too few checklists (11258) to judge6 am: 3.2% of 50447 checklists7 am: 3.9% of 118312 checklists8 am: 3.5% of 123273 checklists9 am: 3.4% of 107783 checklists10 am: 3.2% of 97537 checklists11 am: 3.1% of 82427 checklists12 pm: 3.1% of 72581 checklists1 pm: 3.0% of 71478 checklists2 pm: 3.1% of 69994 checklists3 pm: 2.6% of 66822 checklists4 pm: 1.7% of 55950 checklists5 pm: 1.1% of 41360 checklists6 pm: 0.3% of 28122 checklists7 pm: too few checklists (14727) to judge8 pm: too few checklists (4257) to judge9 pm: too few checklists (1273) to judge10 pm: too few checklists (920) to judge11 pm: too few checklists (693) 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
January4.2%4.4%4.2%4.8%
February4.2%3.7%3.4%3.6%
March3.7%3.6%4.4%5.5%
April6.1%4.1%1.8%0.5%
May0.3%0.2%0.1%0.2%
June0.1%0.2%0.2%0.2%
July0.2%0.1%0.1%0.1%
August0.1%0.1%0.1%0.1%
September0.1%0.1%0.4%1.7%
October4.8%7.4%7.9%7.1%
November6.2%5.9%5.8%6.1%
December5.6%6.0%6.2%5.8%

Neighboring states

  • Delaware: arrives late September, in the same week than New Jersey
  • Connecticut: arrives late August, 4 weeks earlier than New Jersey
  • Pennsylvania: arrives mid September, 1 week earlier than New Jersey
  • New York: arrives the second week of September, 2 weeks earlier than New Jersey

Common questions

When do Brown Creepers arrive in New Jersey?
Brown Creepers are winter birds in New Jersey: the first arrive in late September, they are common by early October, peak in mid October (7.5% of checklists), and most are gone by the second week of April.
When do Brown Creepers leave New Jersey?
Most Brown Creepers have left New Jersey by the second week of April, when reports fall below half their usual rate. Stragglers are still reported until mid April.
When is the best time to see a Brown Creeper in New Jersey?
The Brown Creeper is reported most often in mid October, on about 7.5% of New Jersey checklists.
Where in New Jersey are Brown Creepers seen most often?
By county, Passaic County, Burlington County, and Hunterdon County have the highest peak reporting rates for the Brown Creeper (counties with at least 200 checklists).