WhenToBird

Eremophila alpestris · Alaudidae

When Do Horned Larks Arrive in South Dakota?

Adult Horned Lark
Photo: Laura Gaudette, CC BY 4.0 via iNaturalist

Horned Larks are in South Dakota all year, but most are here in spring: numbers build from early February, peak in early March (8.1% of checklists), and fall back by mid April. In the quietest week (late August) they are still on about 2.1% of checklists.

When to look

Numbers buildFeb 1-7early February
PeakMar 1-7early March
Fall back byApr 15-21mid April
FewestAug 22-31late August

Best: early March. Here all year; numbers build from early February and fall back by mid April. Peak: on about 8.1% of South Dakota checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Maycommon
  6. Juncommon
  7. Julcommon
  8. Augcommon
  9. Sepuncommon
  10. Octcommon
  11. Novcommon
  12. Deccommon

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

0%5%10%Jan 1-7: 9.7% of 1699 checklistsJan 8-14: 5.7% of 967 checklistsJan 15-21: 4.7% of 893 checklistsJan 22-31: 3.7% of 1338 checklistsFeb 1-7: 5.5% of 898 checklistsFeb 8-14: 6.8% of 1013 checklistsFeb 15-21: 6.6% of 1650 checklistsFeb 22-28: 9.0% of 1011 checklistsMar 1-7: 8.9% of 1304 checklistsMar 8-14: 6.7% of 1447 checklistsMar 15-21: 7.9% of 1524 checklistsMar 22-31: 7.6% of 2850 checklistsApr 1-7: 6.7% of 2170 checklistsApr 8-14: 5.8% of 2259 checklistsApr 15-21: 5.5% of 2578 checklistsApr 22-30: 4.4% of 3858 checklistsMay 1-7: 3.4% of 3532 checklistsMay 8-14: 3.7% of 4498 checklistsMay 15-21: 2.9% of 4211 checklistsMay 22-31: 5.2% of 5094 checklistsJun 1-7: 3.9% of 3279 checklistsJun 8-14: 4.8% of 3503 checklistsJun 15-21: 4.4% of 2861 checklistsJun 22-30: 4.0% of 3893 checklistsJul 1-7: 4.9% of 2666 checklistsJul 8-14: 2.9% of 2554 checklistsJul 15-21: 3.4% of 2412 checklistsJul 22-31: 3.4% of 2746 checklistsAug 1-7: 3.5% of 1842 checklistsAug 8-14: 3.4% of 1899 checklistsAug 15-21: 2.3% of 1757 checklistsAug 22-31: 2.2% of 2464 checklistsSep 1-7: 1.8% of 1894 checklistsSep 8-14: 2.4% of 1794 checklistsSep 15-21: 2.2% of 1671 checklistsSep 22-30: 2.1% of 2085 checklistsOct 1-7: 2.8% of 1429 checklistsOct 8-14: 3.2% of 1441 checklistsOct 15-21: 3.5% of 1330 checklistsOct 22-31: 4.2% of 1471 checklistsNov 1-7: 2.3% of 1168 checklistsNov 8-14: 3.1% of 1068 checklistsNov 15-21: 2.5% of 985 checklistsNov 22-30: 2.0% of 1108 checklistsDec 1-7: 4.4% of 890 checklistsDec 8-14: 3.3% of 957 checklistsDec 15-21: 2.3% of 1246 checklistsDec 22-31: 3.7% of 1514 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 Dakota 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 Dakota

Best counties

Share of checklists at the peak
  1. Perkins CountyBest late March · 11 checklists that week, 413 in all65%
  2. Sully CountyBest early March · 10 checklists that week, 632 in all62%
  3. Jones CountyBest late January · 10 checklists that week, 425 in all52%
  4. Lyman CountyBest early January · 27 checklists that week, 878 in all45%
  5. Marshall CountyBest late March · 24 checklists that week, 760 in all38%
  6. Harding CountyBest the second week of April · 17 checklists that week, 1,088 in all32%

Best spots

Share of checklists at the peak
  1. Badlands National Park (northwest)Pennington County, best late May · 20 checklists that week, 252 in all64%
  2. Sica Hollow (southwest)Marshall County, best late May · 22 checklists that week, 125 in all8.6%
  3. Blood Run National Historic Landmark Area Tcf TractLincoln County, best the second week of October · 22 checklists that week, 646 in all7.4%
  4. Badlands National Park (west)Jackson County, best the second week of August · 20 checklists that week, 277 in all5.0%

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

Best time of day

In South Dakota, the Horned Lark is most often listed on checklists started between 2 and 4 pm (4.9% of those checklists).

0%2%4%6%12 am: too few checklists (49) to judge1 am: too few checklists (44) to judge2 am: too few checklists (33) to judge3 am: too few checklists (59) to judge4 am: too few checklists (227) to judge5 am: too few checklists (1080) to judge6 am: 3.0% of 3387 checklists7 am: 3.0% of 7718 checklists8 am: 3.9% of 10342 checklists9 am: 4.2% of 10758 checklists10 am: 4.6% of 9123 checklists11 am: 4.7% of 7814 checklists12 pm: 4.6% of 6876 checklists1 pm: 4.5% of 6801 checklists2 pm: 4.9% of 6673 checklists3 pm: 4.9% of 6344 checklists4 pm: 4.4% of 6412 checklists5 pm: 4.0% of 5570 checklists6 pm: 3.8% of 4276 checklists7 pm: 3.6% of 3183 checklists8 pm: too few checklists (1499) to judge9 pm: too few checklists (329) to judge10 pm: too few checklists (82) to judge11 pm: too few checklists (42) 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
January9.7%5.7%4.7%3.7%
February5.5%6.8%6.6%9.0%
March8.9%6.7%7.9%7.6%
April6.7%5.8%5.5%4.4%
May3.4%3.7%2.9%5.2%
June3.9%4.8%4.4%4.0%
July4.9%2.9%3.4%3.4%
August3.5%3.4%2.3%2.2%
September1.8%2.4%2.2%2.1%
October2.8%3.2%3.5%4.2%
November2.3%3.1%2.5%2.0%
December4.4%3.3%2.3%3.7%

Neighboring states

  • Nebraska: arrives early June, 16 weeks later than South Dakota
  • North Dakota: arrives early February, in the same week than South Dakota
  • Minnesota: arrives mid January, 2 weeks earlier than South Dakota
  • Iowa: arrives early October, 16 weeks earlier than South Dakota

Common questions

When do Horned Larks arrive in South Dakota?
Horned Larks are in South Dakota all year, but most are here in spring: numbers build from early February, peak in early March (8.1% of checklists), and fall back by mid April. In the quietest week (late August) they are still on about 2.1% of checklists.
When do Horned Larks leave South Dakota?
Horned Larks never fully leave South Dakota: numbers fall back below half their usual rate by mid April, but some are still reported in every week, about 2.1% of checklists at the low.
When is the best time to see a Horned Lark in South Dakota?
The Horned Lark is reported most often in early March, on about 8.1% of South Dakota checklists.
Where in South Dakota are Horned Larks seen most often?
By county, Perkins County, Sully County, and Jones County have the highest peak reporting rates for the Horned Lark (counties with at least 200 checklists).