WhenToBird

Cygnus columbianus · Anatidae

Tundra Swan: When and Where to See It

Adult Tundra Swan
Photo: Jan Ebr & Ivana Ebrová, CC BY 4.0 via iNaturalist

The Tundra Swan reaches Wisconsin first, around late October, and California last, around the second week of November.

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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0%0.5%1%1.5%2%Jan 1-7: 1.3% of 1114036 checklistsJan 8-14: 1.3% of 824708 checklistsJan 15-21: 1.4% of 825978 checklistsJan 22-31: 1.3% of 1105853 checklistsFeb 1-7: 1.3% of 779772 checklistsFeb 8-14: 1.1% of 864504 checklistsFeb 15-21: 1.0% of 1127933 checklistsFeb 22-28: 1.6% of 840124 checklistsMar 1-7: 1.7% of 839610 checklistsMar 8-14: 1.6% of 870138 checklistsMar 15-21: 1.3% of 898456 checklistsMar 22-31: 0.9% of 1335637 checklistsApr 1-7: 0.5% of 1030617 checklistsApr 8-14: 0.3% of 1124024 checklistsApr 15-21: 0.2% of 1194575 checklistsApr 22-30: 0.1% of 1675723 checklistsMay 1-7: 0.1% of 1449080 checklistsMay 8-14: 0.1% of 1538353 checklistsMay 15-21: 0.1% of 1219898 checklistsMay 22-31: 0.1% of 1452282 checklistsJun 1-7: 0.1% of 900636 checklistsJun 8-14: 0.1% of 829907 checklistsJun 15-21: 0.1% of 773255 checklistsJun 22-30: 0.1% of 916255 checklistsJul 1-7: 0.1% of 717733 checklistsJul 8-14: 0.1% of 658223 checklistsJul 15-21: 0.1% of 638752 checklistsJul 22-31: 0.1% of 895727 checklistsAug 1-7: 0.1% of 655651 checklistsAug 8-14: 0.1% of 650038 checklistsAug 15-21: 0.1% of 654639 checklistsAug 22-31: 0.1% of 974928 checklistsSep 1-7: 0.1% of 765914 checklistsSep 8-14: 0.1% of 738674 checklistsSep 15-21: 0.1% of 750433 checklistsSep 22-30: 0.1% of 944196 checklistsOct 1-7: 0.1% of 760106 checklistsOct 8-14: 0.1% of 793131 checklistsOct 15-21: 0.1% of 728727 checklistsOct 22-31: 0.5% of 959954 checklistsNov 1-7: 0.8% of 709464 checklistsNov 8-14: 1.4% of 693424 checklistsNov 15-21: 1.5% of 653952 checklistsNov 22-30: 1.7% of 871137 checklistsDec 1-7: 1.6% of 627591 checklistsDec 8-14: 1.4% of 642427 checklistsDec 15-21: 1.1% of 775638 checklistsDec 22-31: 1.4% of 1132751 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Pooled across every state in the data, so it leans toward states with the most birders.

States, in order of first arrivals

StatePatternFirst arrivalsPeakMost gone byPeak %
AlaskaSummer visitorApr 1-7Jun 8-14Jul 22-315.0%
WyomingPasses throughOct 15-21Nov 8-14Dec 1-73.2%
West VirginiaPasses throughNov 1-7Dec 1-7Dec 15-213.4%
South DakotaWinter visitorOct 8-14Nov 8-14Dec 8-142.3%
MontanaWinter visitorOct 15-21Nov 1-7Dec 1-76.7%
WisconsinWinter visitorOct 22-31Mar 15-21Apr 1-77.1%
MichiganWinter visitorOct 22-31Mar 8-14Apr 1-73.2%
NevadaWinter visitorOct 22-31Nov 15-21Mar 8-144.5%
OregonWinter visitorOct 22-31Jan 22-31Mar 22-314.4%
IllinoisWinter visitorOct 22-31Nov 22-30Mar 8-141.7%
WashingtonWinter visitorOct 22-31Nov 15-21Mar 22-312.5%
DelawareWinter visitorNov 1-7Dec 15-21Mar 8-148.6%
MarylandWinter visitorNov 1-7Mar 1-7Mar 8-146.5%
North CarolinaWinter visitorNov 1-7Jan 1-7Feb 15-215.2%
OhioWinter visitorNov 1-7Mar 1-7Mar 15-213.6%
UtahWinter visitorNov 1-7Mar 1-7Apr 1-73.5%
IowaWinter visitorNov 1-7Nov 15-21Mar 15-211.6%
IndianaWinter visitorNov 1-7Jan 15-21Mar 8-141.6%
PennsylvaniaWinter visitorNov 8-14Mar 1-7Mar 22-315.7%
New JerseyWinter visitorNov 8-14Nov 22-30Mar 8-142.5%
New YorkWinter visitorNov 8-14Mar 1-7Mar 22-313.0%
VirginiaWinter visitorNov 8-14Dec 1-7Mar 8-143.4%
CaliforniaWinter visitorNov 8-14Jan 15-21Feb 15-211.1%
MissouriWinter visitorNov 8-14Dec 1-7Feb 1-71.2%
IdahoWinter visitorJan 15-21Mar 8-14Apr 15-215.4%
MinnesotaWinter visitorMar 1-7Mar 22-31Apr 15-215.0%
North DakotaWinter visitorSep 22-30Oct 22-31Dec 8-148.8%

Winter visitor in: South Dakota, Montana, Nevada, Illinois, Washington, Iowa, New Jersey, Virginia, Missouri, North Dakota, Idaho, Minnesota

Passes through: Wyoming, West Virginia

Summer visitor in: Alaska