WhenToBird

Spinus pinus · Fringillidae

When Do Pine Siskins Arrive in Illinois?

Adult Pine Siskin
Photo: Dominique Bérubé, CC0 1.0 via iNaturalist

Pine Siskins are winter birds in Illinois: the first arrive in late September, they are common by early October, peak in early November (6.6% of checklists), and most are gone by early May.

When to look

First arrivalsSep 22-30late September
Common byOct 1-7early October
PeakNov 1-7early November
Most gone byMay 1-7early May

Best: early November. First arrivals late September; most are gone by early May. Peak: on about 6.6% of Illinois checklists.

  1. Jancommon
  2. Febcommon
  3. Maruncommon
  4. Apruncommon
  5. Mayuncommon
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepuncommon
  10. Octpeak season
  11. Novpeak season
  12. Deccommon

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

0%2%4%6%8%Jan 1-7: 2.9% of 29700 checklistsJan 8-14: 3.3% of 20189 checklistsJan 15-21: 3.2% of 19784 checklistsJan 22-31: 3.0% of 26641 checklistsFeb 1-7: 2.6% of 20478 checklistsFeb 8-14: 3.4% of 21967 checklistsFeb 15-21: 3.0% of 28735 checklistsFeb 22-28: 2.6% of 24223 checklistsMar 1-7: 2.3% of 26775 checklistsMar 8-14: 2.0% of 27579 checklistsMar 15-21: 2.0% of 27193 checklistsMar 22-31: 1.9% of 42278 checklistsApr 1-7: 1.7% of 34579 checklistsApr 8-14: 1.7% of 38290 checklistsApr 15-21: 1.6% of 39261 checklistsApr 22-30: 1.5% of 59584 checklistsMay 1-7: 1.7% of 60485 checklistsMay 8-14: 1.5% of 59647 checklistsMay 15-21: 1.1% of 43173 checklistsMay 22-31: 0.4% of 47913 checklistsJun 1-7: 0.2% of 31151 checklistsJun 8-14: 0.1% of 27692 checklistsJun 15-21: 0.1% of 23983 checklistsJun 22-30: 0.1% of 28448 checklistsJul 1-7: 0.1% of 21273 checklistsJul 8-14: 0.1% of 19284 checklistsJul 15-21: 0.1% of 17712 checklistsJul 22-31: 0.1% of 24500 checklistsAug 1-7: 0.1% of 18498 checklistsAug 8-14: 0.1% of 19331 checklistsAug 15-21: 0.1% of 19983 checklistsAug 22-31: 0.1% of 31892 checklistsSep 1-7: 0.1% of 26396 checklistsSep 8-14: 0.1% of 25011 checklistsSep 15-21: 0.3% of 23597 checklistsSep 22-30: 0.7% of 30638 checklistsOct 1-7: 3.0% of 23949 checklistsOct 8-14: 4.2% of 24412 checklistsOct 15-21: 6.0% of 22359 checklistsOct 22-31: 6.6% of 29794 checklistsNov 1-7: 7.0% of 21877 checklistsNov 8-14: 6.3% of 19742 checklistsNov 15-21: 5.9% of 18989 checklistsNov 22-30: 4.6% of 23905 checklistsDec 1-7: 3.9% of 16935 checklistsDec 8-14: 3.3% of 16687 checklistsDec 15-21: 3.4% of 20931 checklistsDec 22-31: 3.0% 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. Hardin CountyBest mid December · 10 checklists that week, 626 in all32%
  2. Whiteside CountyBest late January · 96 checklists that week, 4,111 in all28%
  3. McDonough CountyBest mid November · 15 checklists that week, 1,858 in all27%
  4. Bureau CountyBest mid November · 139 checklists that week, 10,244 in all22%
  5. DeKalb CountyBest the second week of November · 86 checklists that week, 8,181 in all19%
  6. Saline CountyBest mid December · 107 checklists that week, 7,510 in all19%

Best spots

Share of checklists at the peak
  1. Brown ParkWinnebago County, best early November · 23 checklists that week, 423 in all60%
  2. KanevilleKane County, best early November · 37 checklists that week, 231 in all59%
  3. Van Patten Woods Forest PreserveLake County, best late October · 80 checklists that week, 859 in all48%
  4. Sagawau CanyonCook County, best mid November · 43 checklists that week, 1,011 in all47%
  5. Busey WoodsChampaign County, best late November · 29 checklists that week, 416 in all46%

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

Best time of day

In Illinois, the Pine Siskin is most often listed on checklists started between 6 and 8 am (3.0% of those checklists).

0%1%2%3%4%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: 2.5% of 95511 checklists7 am: 3.3% of 164584 checklists8 am: 2.7% of 163654 checklists9 am: 2.3% of 141804 checklists10 am: 1.9% of 122882 checklists11 am: 1.9% of 100640 checklists12 pm: 1.8% of 89894 checklists1 pm: 1.8% of 82729 checklists2 pm: 1.6% of 79801 checklists3 pm: 1.3% of 82169 checklists4 pm: 1.0% of 75124 checklists5 pm: 0.7% of 57708 checklists6 pm: 0.4% 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
January2.9%3.3%3.2%3.0%
February2.6%3.4%3.0%2.6%
March2.3%2.0%2.0%1.9%
April1.7%1.7%1.6%1.5%
May1.7%1.5%1.1%0.4%
June0.2%0.1%0.1%0.1%
July0.1%0.1%0.1%0.1%
August0.1%0.1%0.1%0.1%
September0.1%0.1%0.3%0.7%
October3.0%4.2%6.0%6.6%
November7.0%6.3%5.9%4.6%
December3.9%3.3%3.4%3.0%

Neighboring states

  • Indiana: arrives early October, 1 week later than Illinois
  • Wisconsin: arrives mid September, 1 week earlier than Illinois
  • Michigan: arrives mid September, 1 week earlier than Illinois
  • Iowa: arrives early October, 1 week later than Illinois

Common questions

When do Pine Siskins arrive in Illinois?
Pine Siskins are winter birds in Illinois: the first arrive in late September, they are common by early October, peak in early November (6.6% of checklists), and most are gone by early May.
When do Pine Siskins leave Illinois?
Most Pine Siskins have left Illinois by early May, when reports fall below half their usual rate. Stragglers are still reported until mid May.
When is the best time to see a Pine Siskin in Illinois?
The Pine Siskin is reported most often in early November, on about 6.6% of Illinois checklists.
Where in Illinois are Pine Siskins seen most often?
By county, Hardin County, Whiteside County, and McDonough County have the highest peak reporting rates for the Pine Siskin (counties with at least 200 checklists).