WhenToBird

Falco sparverius · Falconidae

When Do American Kestrels Arrive in Illinois?

Adult male American Kestrel
Photo: Jonathan Eisen, CC BY 4.0 via iNaturalist

American Kestrels are winter birds in Illinois: the first arrive in late June, they are common by the second week of July, peak in mid November (6.3% of checklists), and most are gone by late April.

When to look

First arrivalsJun 22-30late June
Common byJul 8-14the second week of July
PeakNov 15-21mid November
Most gone byApr 22-30late April

Best: mid November. First arrivals late June; most are gone by late April. Peak: on about 6.3% of Illinois checklists.

  1. Janpeak season
  2. Febcommon
  3. Marpeak season
  4. Aprpeak season
  5. Maycommon
  6. Jununcommon
  7. Julpeak season
  8. Augpeak season
  9. Sepcommon
  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: 5.8% of 29700 checklistsJan 8-14: 5.2% of 20189 checklistsJan 15-21: 4.8% of 19784 checklistsJan 22-31: 4.9% of 26641 checklistsFeb 1-7: 4.4% of 20478 checklistsFeb 8-14: 3.4% of 21967 checklistsFeb 15-21: 2.9% of 28735 checklistsFeb 22-28: 4.0% of 24223 checklistsMar 1-7: 4.3% of 26775 checklistsMar 8-14: 4.3% of 27579 checklistsMar 15-21: 4.5% of 27193 checklistsMar 22-31: 5.0% of 42278 checklistsApr 1-7: 4.8% of 34579 checklistsApr 8-14: 4.8% of 38290 checklistsApr 15-21: 4.4% of 39261 checklistsApr 22-30: 3.6% of 59584 checklistsMay 1-7: 2.7% of 60485 checklistsMay 8-14: 2.1% of 59647 checklistsMay 15-21: 1.7% of 43173 checklistsMay 22-31: 2.0% of 47913 checklistsJun 1-7: 1.8% of 31151 checklistsJun 8-14: 1.8% of 27692 checklistsJun 15-21: 2.0% of 23983 checklistsJun 22-30: 2.4% of 28448 checklistsJul 1-7: 3.3% of 21273 checklistsJul 8-14: 4.0% of 19284 checklistsJul 15-21: 4.7% of 17712 checklistsJul 22-31: 4.9% of 24500 checklistsAug 1-7: 5.0% of 18498 checklistsAug 8-14: 5.6% of 19331 checklistsAug 15-21: 5.0% of 19983 checklistsAug 22-31: 4.4% of 31892 checklistsSep 1-7: 4.0% of 26396 checklistsSep 8-14: 3.9% of 25011 checklistsSep 15-21: 4.1% of 23597 checklistsSep 22-30: 4.6% of 30638 checklistsOct 1-7: 4.4% of 23949 checklistsOct 8-14: 4.2% of 24412 checklistsOct 15-21: 4.7% of 22359 checklistsOct 22-31: 5.0% of 29794 checklistsNov 1-7: 5.9% of 21877 checklistsNov 8-14: 6.4% of 19742 checklistsNov 15-21: 5.8% of 18989 checklistsNov 22-30: 6.6% of 23905 checklistsDec 1-7: 5.5% of 16935 checklistsDec 8-14: 5.2% of 16687 checklistsDec 15-21: 5.7% of 20931 checklistsDec 22-31: 6.1% of 29011 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 Illinois 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 Illinois

Best counties

Share of checklists at the peak
  1. Gallatin CountyBest late July · 11 checklists that week, 625 in all47%
  2. Jasper CountyBest early January · 23 checklists that week, 1,292 in all45%
  3. Wayne CountyBest mid October · 12 checklists that week, 394 in all44%
  4. Monroe CountyBest mid January · 40 checklists that week, 2,547 in all42%
  5. Randolph CountyBest late January · 21 checklists that week, 954 in all39%
  6. Alexander CountyBest late June · 35 checklists that week, 2,108 in all37%

Best spots

Share of checklists at the peak
  1. Park No. 566Cook County, best early August · 39 checklists that week, 3,444 in all79%
  2. Waukegan BeachLake County, best the second week of July · 54 checklists that week, 658 in all78%
  3. Miller MeadowCook County, best early November · 20 checklists that week, 989 in all63%
  4. Northerly IslandCook County, best the second week of November · 50 checklists that week, 1,950 in all58%

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

Best time of day

In Illinois, the American Kestrel is most often listed on checklists started between 11 am and 1 pm (4.9% of those checklists).

0%2%4%6%12 am: too few checklists (484) to judge1 am: too few checklists (631) to judge2 am: too few checklists (485) to judge3 am: too few checklists (610) to judge4 am: too few checklists (2321) to judge5 am: too few checklists (23536) to judge6 am: 3.7% of 95511 checklists7 am: 3.8% of 164584 checklists8 am: 3.9% of 163654 checklists9 am: 4.4% of 141804 checklists10 am: 4.7% of 122882 checklists11 am: 4.8% of 100640 checklists12 pm: 4.9% of 89894 checklists1 pm: 4.8% of 82729 checklists2 pm: 4.7% of 79801 checklists3 pm: 4.3% of 82169 checklists4 pm: 3.6% of 75124 checklists5 pm: 3.0% of 57708 checklists6 pm: 2.3% of 41843 checklists7 pm: too few checklists (20943) to judge8 pm: too few checklists (6131) to judge9 pm: too few checklists (1677) to judge10 pm: too few checklists (843) to judge11 pm: too few checklists (448) 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
January5.8%5.2%4.8%4.9%
February4.4%3.4%2.9%4.0%
March4.3%4.3%4.5%5.0%
April4.8%4.8%4.4%3.6%
May2.7%2.1%1.7%2.0%
June1.8%1.8%2.0%2.4%
July3.3%4.0%4.7%4.9%
August5.0%5.6%5.0%4.4%
September4.0%3.9%4.1%4.6%
October4.4%4.2%4.7%5.0%
November5.9%6.4%5.8%6.6%
December5.5%5.2%5.7%6.1%

Neighboring states

  • Indiana: arrives early June, 3 weeks earlier than Illinois
  • Wisconsin: arrives the second week of November, 18 weeks later than Illinois
  • Michigan: arrives the second week of November, 18 weeks later than Illinois
  • Iowa: arrives early June, 3 weeks earlier than Illinois

Common questions

When do American Kestrels arrive in Illinois?
American Kestrels are winter birds in Illinois: the first arrive in late June, they are common by the second week of July, peak in mid November (6.3% of checklists), and most are gone by late April.
When do American Kestrels leave Illinois?
Most American Kestrels have left Illinois by late April, when reports fall below half their usual rate. Stragglers are still reported until the second week of May.
When is the best time to see a American Kestrel in Illinois?
The American Kestrel is reported most often in mid November, on about 6.3% of Illinois checklists.
Where in Illinois are American Kestrels seen most often?
By county, Gallatin County, Jasper County, and Wayne County have the highest peak reporting rates for the American Kestrel (counties with at least 200 checklists).