WhenToBird

Ammodramus savannarum · Passerellidae

When Do Grasshopper Sparrows Arrive in Minnesota?

Adult Grasshopper Sparrow
Photo: Cole Wolf, CC BY 4.0 via iNaturalist

Grasshopper Sparrows reach Minnesota in the second week of May, are common by mid May, peak in the second week of June (3.4% of checklists), and most are gone by late July.

When to look

First arrivalsMay 8-14the second week of May
Common byMay 15-21mid May
PeakJun 8-14the second week of June
Most gone byJul 22-31late July

Best: the second week of June. First arrivals the second week of May; most are gone by late July. Peak: on about 3.4% of Minnesota checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marnot usually seen
  4. Aprrare
  5. Maycommon
  6. Junpeak season
  7. Julpeak season
  8. Auguncommon
  9. Sepnot usually seen
  10. Octnot usually seen
  11. Novnot usually seen
  12. Decnot usually seen

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

0%1%2%3%4%Jan 1-7: 0% of 20628 checklistsJan 8-14: 0% of 14594 checklistsJan 15-21: 0% of 14238 checklistsJan 22-31: 0% of 20725 checklistsFeb 1-7: 0% of 14484 checklistsFeb 8-14: 0% of 15988 checklistsFeb 15-21: 0% of 20718 checklistsFeb 22-28: 0% of 15754 checklistsMar 1-7: 0% of 16125 checklistsMar 8-14: 0% of 19035 checklistsMar 15-21: 0% of 19586 checklistsMar 22-31: 0% of 30192 checklistsApr 1-7: 0% of 24262 checklistsApr 8-14: 0.1% of 30223 checklistsApr 15-21: 0.1% of 29085 checklistsApr 22-30: 0.3% of 43574 checklistsMay 1-7: 0.8% of 39300 checklistsMay 8-14: 1.2% of 45927 checklistsMay 15-21: 1.5% of 36632 checklistsMay 22-31: 2.3% of 43809 checklistsJun 1-7: 3.2% of 23418 checklistsJun 8-14: 3.4% of 20450 checklistsJun 15-21: 3.7% of 19470 checklistsJun 22-30: 3.1% of 23418 checklistsJul 1-7: 2.8% of 19104 checklistsJul 8-14: 2.5% of 16927 checklistsJul 15-21: 2.4% of 15635 checklistsJul 22-31: 1.8% of 22073 checklistsAug 1-7: 1.1% of 16255 checklistsAug 8-14: 0.5% of 16840 checklistsAug 15-21: 0.3% of 17475 checklistsAug 22-31: 0.2% of 26545 checklistsSep 1-7: 0.1% of 20750 checklistsSep 8-14: 0.1% of 18494 checklistsSep 15-21: 0.1% of 18215 checklistsSep 22-30: 0.1% of 24463 checklistsOct 1-7: 0.1% of 18252 checklistsOct 8-14: 0.1% of 19527 checklistsOct 15-21: 0.1% of 17098 checklistsOct 22-31: 0.1% of 24570 checklistsNov 1-7: 0.1% of 16744 checklistsNov 8-14: 0% of 13483 checklistsNov 15-21: 0% of 12525 checklistsNov 22-30: 0% of 17023 checklistsDec 1-7: 0.1% of 11645 checklistsDec 8-14: 0% of 11567 checklistsDec 15-21: 0% of 13343 checklistsDec 22-31: 0% of 19759 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 Minnesota 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 Minnesota

Best counties

Share of checklists at the peak
  1. Rock CountyBest the second week of June · 78 checklists that week, 1,979 in all26%
  2. Sherburne CountyBest mid June · 202 checklists that week, 9,922 in all23%
  3. Lincoln CountyBest late July · 14 checklists that week, 1,063 in all21%
  4. Clay CountyBest the second week of June · 243 checklists that week, 9,201 in all20%
  5. Lyon CountyBest mid June · 69 checklists that week, 4,283 in all19%
  6. Pipestone CountyBest mid June · 53 checklists that week, 2,486 in all19%

Best spots

Share of checklists at the peak
  1. Grey Cloud Dunes State Scientific and Natural AreaWashington County, best the second week of July · 45 checklists that week, 2,212 in all82%
  2. Northern Tallgrass Prairie National Wildlife RefugeRock County, best late May · 21 checklists that week, 228 in all73%
  3. Prairie LakeHennepin County, best the second week of July · 61 checklists that week, 1,833 in all68%
  4. Fish LakeAnoka County, best mid June · 33 checklists that week, 654 in all65%
  5. Rapids LakeCarver County, best late May · 21 checklists that week, 591 in all56%

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

Best time of day

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

0%0.5%1%1.5%2%12 am: too few checklists (349) to judge1 am: too few checklists (331) to judge2 am: too few checklists (286) to judge3 am: too few checklists (364) to judge4 am: too few checklists (863) to judge5 am: too few checklists (7598) to judge6 am: 1.7% of 35775 checklists7 am: 1.0% of 90565 checklists8 am: 0.8% of 110612 checklists9 am: 0.8% of 106128 checklists10 am: 0.7% of 96131 checklists11 am: 0.6% of 83750 checklists12 pm: 0.6% of 76254 checklists1 pm: 0.5% of 73480 checklists2 pm: 0.5% of 73703 checklists3 pm: 0.5% of 75249 checklists4 pm: 0.5% of 68810 checklists5 pm: 0.6% of 51899 checklists6 pm: 0.7% of 38524 checklists7 pm: 0.9% of 25120 checklists8 pm: too few checklists (10568) to judge9 pm: too few checklists (2420) to judge10 pm: too few checklists (748) to judge11 pm: too few checklists (420) 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%0%0%0%
February0%0%0%0%
March0%0%0%0%
April0%0.1%0.1%0.3%
May0.8%1.2%1.5%2.3%
June3.2%3.4%3.7%3.1%
July2.8%2.5%2.4%1.8%
August1.1%0.5%0.3%0.2%
September0.1%0.1%0.1%0.1%
October0.1%0.1%0.1%0.1%
November0.1%0%0%0%
December0.1%0%0%0%

Neighboring states

  • Iowa: arrives early May, 1 week earlier than Minnesota
  • Wisconsin: arrives the second week of May, in the same week than Minnesota
  • South Dakota: arrives early May, 1 week earlier than Minnesota
  • North Dakota: arrives the second week of May, in the same week than Minnesota

Common questions

When do Grasshopper Sparrows arrive in Minnesota?
Grasshopper Sparrows reach Minnesota in the second week of May, are common by mid May, peak in the second week of June (3.4% of checklists), and most are gone by late July.
When do Grasshopper Sparrows leave Minnesota?
Most Grasshopper Sparrows have left Minnesota by late July, when reports fall below half their usual rate. Stragglers are still reported until early August.
When is the best time to see a Grasshopper Sparrow in Minnesota?
The Grasshopper Sparrow is reported most often in the second week of June, on about 3.4% of Minnesota checklists.
Where in Minnesota are Grasshopper Sparrows seen most often?
By county, Rock County, Sherburne County, and Lincoln County have the highest peak reporting rates for the Grasshopper Sparrow (counties with at least 200 checklists).