WhenToBird

Circus hudsonius · Accipitridae

When Do Northern Harriers Arrive in South Carolina?

Northern Harriers are winter birds in South Carolina: the first arrive in mid September, they are common by late September, peak in mid November (4.6% of checklists), and most are gone by late March.

When to look

First arrivalsSep 15-21mid September
Common bySep 22-30late September
PeakNov 15-21mid November
Most gone byMar 22-31late March

Best: mid November. First arrivals mid September; most are gone by late March. Peak: on about 4.6% of South Carolina checklists.

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

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

0%2%4%6%Jan 1-7: 4.1% of 15487 checklistsJan 8-14: 3.9% of 11691 checklistsJan 15-21: 3.2% of 11994 checklistsJan 22-31: 3.1% of 16225 checklistsFeb 1-7: 3.5% of 12192 checklistsFeb 8-14: 3.0% of 14044 checklistsFeb 15-21: 2.2% of 18483 checklistsFeb 22-28: 2.7% of 12045 checklistsMar 1-7: 2.8% of 11511 checklistsMar 8-14: 2.6% of 11704 checklistsMar 15-21: 2.5% of 11526 checklistsMar 22-31: 1.9% of 17386 checklistsApr 1-7: 1.7% of 13148 checklistsApr 8-14: 1.2% of 13193 checklistsApr 15-21: 0.8% of 13936 checklistsApr 22-30: 0.6% of 19002 checklistsMay 1-7: 0.3% of 14133 checklistsMay 8-14: 0.1% of 13668 checklistsMay 15-21: 0.1% of 11064 checklistsMay 22-31: 0.1% of 14461 checklistsJun 1-7: 0.1% of 10231 checklistsJun 8-14: 0% of 9417 checklistsJun 15-21: 0% of 8012 checklistsJun 22-30: 0% of 9720 checklistsJul 1-7: 0% of 7907 checklistsJul 8-14: 0% of 7338 checklistsJul 15-21: 0.1% of 7312 checklistsJul 22-31: 0.1% of 10877 checklistsAug 1-7: 0.1% of 7816 checklistsAug 8-14: 0.1% of 7655 checklistsAug 15-21: 0.1% of 7797 checklistsAug 22-31: 0.2% of 11246 checklistsSep 1-7: 0.7% of 8956 checklistsSep 8-14: 0.7% of 8929 checklistsSep 15-21: 1.0% of 9389 checklistsSep 22-30: 1.7% of 13028 checklistsOct 1-7: 2.2% of 11063 checklistsOct 8-14: 2.4% of 10968 checklistsOct 15-21: 3.6% of 10264 checklistsOct 22-31: 4.0% of 12917 checklistsNov 1-7: 3.9% of 8802 checklistsNov 8-14: 4.4% of 8339 checklistsNov 15-21: 4.8% of 8798 checklistsNov 22-30: 4.5% of 12925 checklistsDec 1-7: 4.0% of 8541 checklistsDec 8-14: 4.5% of 8609 checklistsDec 15-21: 4.3% of 9961 checklistsDec 22-31: 4.2% of 17541 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 South Carolina 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 South Carolina

Best counties

Share of checklists at the peak
  1. Jasper CountyBest mid January · 233 checklists that week, 12,443 in all38%
  2. Clarendon CountyBest the second week of January · 271 checklists that week, 9,189 in all33%
  3. Union CountyBest the second week of March · 21 checklists that week, 851 in all24%
  4. Colleton CountyBest the second week of February · 377 checklists that week, 8,909 in all19%
  5. Allendale CountyBest late December · 16 checklists that week, 1,172 in all15%
  6. Marlboro CountyBest early December · 18 checklists that week, 686 in all13%

Best spots

Share of checklists at the peak
  1. Savannah National Wildlife RefugeJasper County, best mid November · 50 checklists that week, 2,487 in all75%
  2. Scotts Lake (historical)Clarendon County, best the second week of January · 117 checklists that week, 1,963 in all68%
  3. Ernest F. Hollings Ace Basin National Wildlife RefugeBeaufort County, best early January · 24 checklists that week, 489 in all64%
  4. Bear Island Wildlife Management AreaColleton County, best the second week of March · 49 checklists that week, 1,645 in all45%
  5. Colclough PondClarendon County, best late October · 40 checklists that week, 379 in all41%

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

Best time of day

In South Carolina, the Northern Harrier is most often listed on checklists started between 9 and 11 am (2.5% of those checklists).

0%1%2%3%12 am: too few checklists (222) to judge1 am: too few checklists (160) to judge2 am: too few checklists (132) to judge3 am: too few checklists (212) to judge4 am: too few checklists (267) to judge5 am: too few checklists (1898) to judge6 am: 1.1% of 19280 checklists7 am: 1.9% of 66492 checklists8 am: 2.3% of 73941 checklists9 am: 2.5% of 63039 checklists10 am: 2.4% of 52652 checklists11 am: 2.1% of 41908 checklists12 pm: 2.0% of 36782 checklists1 pm: 2.5% of 33300 checklists2 pm: 2.3% of 32248 checklists3 pm: 2.1% of 35451 checklists4 pm: 1.7% of 34410 checklists5 pm: 1.0% of 27073 checklists6 pm: 0.4% of 17375 checklists7 pm: too few checklists (10313) to judge8 pm: too few checklists (2756) to judge9 pm: too few checklists (672) to judge10 pm: too few checklists (412) 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
January4.1%3.9%3.2%3.1%
February3.5%3.0%2.2%2.7%
March2.8%2.6%2.5%1.9%
April1.7%1.2%0.8%0.6%
May0.3%0.1%0.1%0.1%
June0.1%0%0%0%
July0%0%0.1%0.1%
August0.1%0.1%0.1%0.2%
September0.7%0.7%1.0%1.7%
October2.2%2.4%3.6%4.0%
November3.9%4.4%4.8%4.5%
December4.0%4.5%4.3%4.2%

Neighboring states

  • North Carolina: arrives late September, 1 week later than South Carolina
  • Georgia: arrives the second week of October, 3 weeks later than South Carolina
  • Tennessee: arrives the second week of October, 3 weeks later than South Carolina
  • Virginia: arrives the second week of September, 1 week earlier than South Carolina

Common questions

When do Northern Harriers arrive in South Carolina?
Northern Harriers are winter birds in South Carolina: the first arrive in mid September, they are common by late September, peak in mid November (4.6% of checklists), and most are gone by late March.
When do Northern Harriers leave South Carolina?
Most Northern Harriers have left South Carolina by late March, when reports fall below half their usual rate. Stragglers are still reported until the second week of April.
When is the best time to see a Northern Harrier in South Carolina?
The Northern Harrier is reported most often in mid November, on about 4.6% of South Carolina checklists.
Where in South Carolina are Northern Harriers seen most often?
By county, Jasper County, Clarendon County, and Union County have the highest peak reporting rates for the Northern Harrier (counties with at least 200 checklists).