WhenToBird

Quiscalus quiscula · Icteridae

When Do Common Grackles Arrive in South Carolina?

Adult Common Grackle
Photo: Derek Spencer, CC BY 4.0 via iNaturalist

Common Grackles are in South Carolina all year, but most are here in spring: numbers build from the second week of March, peak in the second week of May (24% of checklists), and fall back by early July. In the quietest week (mid September) they are still on about 8.3% of checklists.

When to look

Numbers buildMar 8-14the second week of March
PeakMay 8-14the second week of May
Fall back byJul 1-7early July
FewestSep 15-21mid September

Best: the second week of May. Here all year; numbers build from the second week of March and fall back by early July. Peak: on about 24% of South Carolina checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julcommon
  8. Augcommon
  9. Sepuncommon
  10. Octcommon
  11. Novcommon
  12. Decuncommon

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

0%10%20%30%Jan 1-7: 8.7% of 15487 checklistsJan 8-14: 8.5% of 11691 checklistsJan 15-21: 9.5% of 11994 checklistsJan 22-31: 10% of 16225 checklistsFeb 1-7: 13% of 12192 checklistsFeb 8-14: 12% of 14044 checklistsFeb 15-21: 13% of 18483 checklistsFeb 22-28: 15% of 12045 checklistsMar 1-7: 16% of 11511 checklistsMar 8-14: 17% of 11704 checklistsMar 15-21: 17% of 11526 checklistsMar 22-31: 18% of 17386 checklistsApr 1-7: 18% of 13148 checklistsApr 8-14: 20% of 13193 checklistsApr 15-21: 22% of 13936 checklistsApr 22-30: 24% of 19002 checklistsMay 1-7: 24% of 14133 checklistsMay 8-14: 24% of 13668 checklistsMay 15-21: 24% of 11064 checklistsMay 22-31: 24% of 14461 checklistsJun 1-7: 23% of 10231 checklistsJun 8-14: 22% of 9417 checklistsJun 15-21: 22% of 8012 checklistsJun 22-30: 20% of 9720 checklistsJul 1-7: 17% of 7907 checklistsJul 8-14: 15% of 7338 checklistsJul 15-21: 13% of 7312 checklistsJul 22-31: 11% of 10877 checklistsAug 1-7: 10% of 7816 checklistsAug 8-14: 9.0% of 7655 checklistsAug 15-21: 8.9% of 7797 checklistsAug 22-31: 9.7% of 11246 checklistsSep 1-7: 9.9% of 8956 checklistsSep 8-14: 8.8% of 8929 checklistsSep 15-21: 8.0% of 9389 checklistsSep 22-30: 8.2% of 13028 checklistsOct 1-7: 9.4% of 11063 checklistsOct 8-14: 9.9% of 10968 checklistsOct 15-21: 12% of 10264 checklistsOct 22-31: 12% of 12917 checklistsNov 1-7: 13% of 8802 checklistsNov 8-14: 12% of 8339 checklistsNov 15-21: 11% of 8798 checklistsNov 22-30: 9.9% of 12925 checklistsDec 1-7: 8.8% of 8541 checklistsDec 8-14: 8.5% of 8609 checklistsDec 15-21: 8.8% of 9961 checklistsDec 22-31: 8.8% 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. Clarendon CountyBest early June · 170 checklists that week, 9,189 in all62%
  2. Marlboro CountyBest mid May · 38 checklists that week, 686 in all61%
  3. Darlington CountyBest early May · 102 checklists that week, 2,791 in all52%
  4. Florence CountyBest the second week of May · 74 checklists that week, 2,713 in all52%
  5. Chester CountyBest late May · 57 checklists that week, 921 in all49%
  6. Horry CountyBest the second week of May · 526 checklists that week, 27,518 in all42%

Best spots

Share of checklists at the peak
  1. Furman LakeGreenville County, best the second week of May · 25 checklists that week, 1,287 in all86%
  2. Conway Dog ParkHorry County, best late April · 28 checklists that week, 731 in all85%
  3. Saluda Terrace Gardens PondRichland County, best late April · 34 checklists that week, 770 in all84%
  4. Brick Pond ParkAiken County, best mid May · 22 checklists that week, 767 in all84%
  5. Bailey Creek Reservoir (historical)Anderson County, best late May · 23 checklists that week, 1,125 in all78%

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

Best time of day

In South Carolina, the Common Grackle is most often listed on checklists started between 6 and 8 am (22% of those checklists).

0%10%20%30%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: 20% of 19280 checklists7 am: 22% of 66492 checklists8 am: 18% of 73941 checklists9 am: 15% of 63039 checklists10 am: 12% of 52652 checklists11 am: 11% of 41908 checklists12 pm: 10% of 36782 checklists1 pm: 10% of 33300 checklists2 pm: 11% of 32248 checklists3 pm: 12% of 35451 checklists4 pm: 13% of 34410 checklists5 pm: 14% of 27073 checklists6 pm: 15% 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
January8.7%8.5%9.5%10%
February13%12%13%15%
March16%17%17%18%
April18%20%22%24%
May24%24%24%24%
June23%22%22%20%
July17%15%13%11%
August10%9.0%8.9%9.7%
September9.9%8.8%8.0%8.2%
October9.4%9.9%12%12%
November13%12%11%9.9%
December8.8%8.5%8.8%8.8%

Neighboring states

  • North Carolina: arrives early March, 1 week earlier than South Carolina
  • Georgia: arrives early March, 1 week earlier than South Carolina
  • Tennessee: arrives early March, 1 week earlier than South Carolina
  • Virginia: arrives early March, 1 week earlier than South Carolina

Common questions

When do Common Grackles arrive in South Carolina?
Common Grackles are in South Carolina all year, but most are here in spring: numbers build from the second week of March, peak in the second week of May (24% of checklists), and fall back by early July. In the quietest week (mid September) they are still on about 8.3% of checklists.
When do Common Grackles leave South Carolina?
Common Grackles never fully leave South Carolina: numbers fall back below half their usual rate by early July, but some are still reported in every week, about 8.3% of checklists at the low.
When is the best time to see a Common Grackle in South Carolina?
The Common Grackle is reported most often in the second week of May, on about 24% of South Carolina checklists.
Where in South Carolina are Common Grackles seen most often?
By county, Clarendon County, Marlboro County, and Darlington County have the highest peak reporting rates for the Common Grackle (counties with at least 200 checklists).