WhenToBird

Anas rubripes · Anatidae

When Do American Black Ducks Arrive in Minnesota?

Adult American Black Duck
Photo: Lisa Wiencek Gerbec, CC BY 4.0 via iNaturalist

American Black Ducks are winter birds in Minnesota: they arrive in the second week of October, peak in the second week of January (2.3% of checklists), and most are gone by the second week of April.

When to look

First arrivalsOct 8-14the second week of October
Common byOct 8-14the second week of October
PeakJan 8-14the second week of January
Most gone byApr 8-14the second week of April

Best: the second week of January. First arrivals the second week of October; most are gone by the second week of April. Peak: on about 2.3% of Minnesota checklists.

  1. Janpeak season
  2. Febcommon
  3. Marcommon
  4. Apruncommon
  5. Mayrare
  6. Junrare
  7. Julrare
  8. Auguncommon
  9. Sepuncommon
  10. Octcommon
  11. Novpeak season
  12. Decpeak season

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

0%1%2%3%Jan 1-7: 2.5% of 20628 checklistsJan 8-14: 2.4% of 14594 checklistsJan 15-21: 1.9% of 14238 checklistsJan 22-31: 1.7% of 20725 checklistsFeb 1-7: 1.5% of 14484 checklistsFeb 8-14: 1.1% of 15988 checklistsFeb 15-21: 1.1% of 20718 checklistsFeb 22-28: 1.4% of 15754 checklistsMar 1-7: 1.3% of 16125 checklistsMar 8-14: 1.1% of 19035 checklistsMar 15-21: 1.0% of 19586 checklistsMar 22-31: 1.0% of 30192 checklistsApr 1-7: 0.8% of 24262 checklistsApr 8-14: 0.8% of 30223 checklistsApr 15-21: 0.6% of 29085 checklistsApr 22-30: 0.4% of 43574 checklistsMay 1-7: 0.2% of 39300 checklistsMay 8-14: 0.1% of 45927 checklistsMay 15-21: 0.1% of 36632 checklistsMay 22-31: 0.2% of 43809 checklistsJun 1-7: 0.1% of 23418 checklistsJun 8-14: 0.1% of 20450 checklistsJun 15-21: 0.1% of 19470 checklistsJun 22-30: 0.1% of 23418 checklistsJul 1-7: 0.1% of 19104 checklistsJul 8-14: 0.2% of 16927 checklistsJul 15-21: 0.1% of 15635 checklistsJul 22-31: 0.1% of 22073 checklistsAug 1-7: 0.2% of 16255 checklistsAug 8-14: 0.3% of 16840 checklistsAug 15-21: 0.3% of 17475 checklistsAug 22-31: 0.4% of 26545 checklistsSep 1-7: 0.5% of 20750 checklistsSep 8-14: 0.5% of 18494 checklistsSep 15-21: 0.5% of 18215 checklistsSep 22-30: 0.4% of 24463 checklistsOct 1-7: 0.6% of 18252 checklistsOct 8-14: 0.7% of 19527 checklistsOct 15-21: 1.0% of 17098 checklistsOct 22-31: 1.5% of 24570 checklistsNov 1-7: 1.5% of 16744 checklistsNov 8-14: 2.0% of 13483 checklistsNov 15-21: 2.1% of 12525 checklistsNov 22-30: 2.1% of 17023 checklistsDec 1-7: 2.4% of 11645 checklistsDec 8-14: 1.8% of 11567 checklistsDec 15-21: 1.6% of 13343 checklistsDec 22-31: 1.7% 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. Scott CountyBest the second week of January · 478 checklists that week, 23,226 in all21%
  2. Houston CountyBest early December · 39 checklists that week, 4,754 in all20%
  3. St. Louis CountyBest the second week of April · 2041 checklists that week, 121,793 in all7.0%
  4. Goodhue CountyBest early January · 280 checklists that week, 16,294 in all6.5%
  5. Kandiyohi CountyBest mid December · 24 checklists that week, 3,492 in all6.3%
  6. Red Lake CountyBest early June · 11 checklists that week, 1,028 in all5.7%

Best spots

Share of checklists at the peak
  1. Shakopee Wayside ParkScott County, best late January · 85 checklists that week, 1,639 in all83%
  2. Western Waterfront TrailSt. Louis County, best the second week of November · 28 checklists that week, 1,973 in all71%
  3. Superior Bay (northwest)St. Louis County, best early November · 25 checklists that week, 227 in all60%
  4. Spirit LakeSt. Louis County, best mid October · 23 checklists that week, 584 in all45%
  5. Lester RiverSt. Louis County, best the second week of January · 35 checklists that week, 514 in all42%

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

Best time of day

In Minnesota, the American Black Duck is most often listed on checklists started between 12 and 2 pm (1.2% of those checklists).

0%0.5%1%1.5%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: 0.5% of 35775 checklists7 am: 0.7% of 90565 checklists8 am: 0.6% of 110612 checklists9 am: 0.6% of 106128 checklists10 am: 0.7% of 96131 checklists11 am: 0.9% of 83750 checklists12 pm: 1.3% of 76254 checklists1 pm: 1.2% of 73480 checklists2 pm: 1.1% of 73703 checklists3 pm: 1.0% of 75249 checklists4 pm: 0.7% of 68810 checklists5 pm: 0.5% of 51899 checklists6 pm: 0.3% of 38524 checklists7 pm: 0.2% 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
January2.5%2.4%1.9%1.7%
February1.5%1.1%1.1%1.4%
March1.3%1.1%1.0%1.0%
April0.8%0.8%0.6%0.4%
May0.2%0.1%0.1%0.2%
June0.1%0.1%0.1%0.1%
July0.1%0.2%0.1%0.1%
August0.2%0.3%0.3%0.4%
September0.5%0.5%0.5%0.4%
October0.6%0.7%1.0%1.5%
November1.5%2.0%2.1%2.1%
December2.4%1.8%1.6%1.7%

Neighboring states

  • Iowa: arrives early November, 3 weeks later than Minnesota
  • Wisconsin: arrives early October, 1 week earlier than Minnesota
  • Illinois: arrives mid October, 1 week later than Minnesota
  • Michigan: arrives the second week of August, 8 weeks earlier than Minnesota

Common questions

When do American Black Ducks arrive in Minnesota?
American Black Ducks are winter birds in Minnesota: they arrive in the second week of October, peak in the second week of January (2.3% of checklists), and most are gone by the second week of April.
When do American Black Ducks leave Minnesota?
Most American Black Ducks have left Minnesota by the second week of April, when reports fall below half their usual rate.
When is the best time to see a American Black Duck in Minnesota?
The American Black Duck is reported most often in the second week of January, on about 2.3% of Minnesota checklists.
Where in Minnesota are American Black Ducks seen most often?
By county, Scott County, Houston County, and St. Louis County have the highest peak reporting rates for the American Black Duck (counties with at least 200 checklists).