WhenToBird

Oxyura jamaicensis · Anatidae

Ruddy Duck: When and Where to See It

Adult male Ruddy Duck
Photo: Anne Parsons, CC0 1.0 via iNaturalist

The Ruddy Duck reaches Oregon first, around mid August, and Florida 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%2%4%6%8%Jan 1-7: 5.6% of 1114036 checklistsJan 8-14: 5.6% of 824708 checklistsJan 15-21: 5.6% of 825978 checklistsJan 22-31: 5.3% of 1105853 checklistsFeb 1-7: 4.9% of 779772 checklistsFeb 8-14: 4.3% of 864504 checklistsFeb 15-21: 3.7% of 1127933 checklistsFeb 22-28: 4.8% of 840124 checklistsMar 1-7: 4.6% of 839610 checklistsMar 8-14: 4.5% of 870138 checklistsMar 15-21: 4.5% of 898456 checklistsMar 22-31: 4.4% of 1335637 checklistsApr 1-7: 4.3% of 1030617 checklistsApr 8-14: 4.0% of 1124024 checklistsApr 15-21: 3.7% of 1194575 checklistsApr 22-30: 3.0% of 1675723 checklistsMay 1-7: 2.2% of 1449080 checklistsMay 8-14: 1.7% of 1538353 checklistsMay 15-21: 1.5% of 1219898 checklistsMay 22-31: 1.5% of 1452282 checklistsJun 1-7: 1.2% of 900636 checklistsJun 8-14: 1.1% of 829907 checklistsJun 15-21: 1.0% of 773255 checklistsJun 22-30: 1.0% of 916255 checklistsJul 1-7: 1.0% of 717733 checklistsJul 8-14: 1.0% of 658223 checklistsJul 15-21: 1.0% of 638752 checklistsJul 22-31: 1.1% of 895727 checklistsAug 1-7: 1.0% of 655651 checklistsAug 8-14: 1.1% of 650038 checklistsAug 15-21: 1.0% of 654639 checklistsAug 22-31: 0.9% of 974928 checklistsSep 1-7: 1.0% of 765914 checklistsSep 8-14: 1.1% of 738674 checklistsSep 15-21: 1.2% of 750433 checklistsSep 22-30: 1.6% of 944196 checklistsOct 1-7: 2.1% of 760106 checklistsOct 8-14: 2.8% of 793131 checklistsOct 15-21: 3.9% of 728727 checklistsOct 22-31: 5.3% of 959954 checklistsNov 1-7: 6.0% of 709464 checklistsNov 8-14: 6.5% of 693424 checklistsNov 15-21: 6.2% of 653952 checklistsNov 22-30: 6.1% of 871137 checklistsDec 1-7: 5.9% of 627591 checklistsDec 8-14: 5.3% of 642427 checklistsDec 15-21: 4.5% of 775638 checklistsDec 22-31: 4.9% 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 %
WisconsinSummer visitorMar 1-7Apr 15-21Jun 15-215.7%
MichiganSummer visitorMar 1-7Apr 8-14May 8-144.9%
South DakotaSummer visitorMar 8-14Apr 15-21Nov 22-309.7%
MinnesotaSummer visitorMar 15-21Apr 15-21Aug 8-147.0%
MontanaSummer visitorApr 1-7May 1-7Nov 22-3010%
MainePasses throughOct 8-14Nov 1-7Nov 22-303.1%
New HampshirePasses throughOct 8-14Oct 22-31Nov 15-211.9%
IdahoSummer visitorDec 22-31Apr 22-30Nov 22-3010%
New JerseyWinter visitorOct 1-7Nov 22-30Apr 1-78.8%
OhioWinter visitorOct 1-7Nov 8-14May 1-77.5%
OklahomaWinter visitorOct 1-7Nov 8-14Apr 22-309.1%
DelawareWinter visitorOct 1-7Nov 15-21Apr 1-76.0%
IllinoisWinter visitorOct 1-7Nov 1-7Apr 22-305.5%
New YorkWinter visitorOct 1-7Nov 8-14Apr 15-216.3%
TexasWinter visitorOct 1-7Nov 15-21Apr 1-75.9%
NevadaAll year, most in winterOct 8-14Mar 8-14Apr 22-3023%
MarylandWinter visitorOct 8-14Dec 1-7Mar 22-319.3%
North CarolinaWinter visitorOct 8-14Dec 1-7Mar 22-319.1%
VirginiaWinter visitorOct 8-14Jan 22-31Mar 22-317.9%
District of ColumbiaWinter visitorOct 8-14Jan 8-14Apr 1-75.2%
IndianaWinter visitorOct 8-14Nov 8-14Apr 15-216.5%
MissouriWinter visitorOct 8-14Nov 8-14Apr 8-146.3%
PennsylvaniaWinter visitorOct 8-14Nov 8-14Apr 15-215.8%
ConnecticutWinter visitorOct 8-14Nov 8-14Feb 1-74.1%
MassachusettsWinter visitorOct 8-14Nov 8-14Apr 15-214.7%
ArizonaAll year, most in winterOct 15-21Jan 8-14Apr 1-716%
ArkansasWinter visitorOct 15-21Nov 15-21Mar 22-315.6%
MississippiWinter visitorOct 15-21Nov 22-30Mar 8-146.1%
West VirginiaWinter visitorOct 15-21Nov 15-21Apr 8-145.4%
TennesseeWinter visitorOct 15-21Nov 15-21Mar 15-215.0%
AlabamaWinter visitorOct 22-31Nov 22-30Mar 8-143.2%
GeorgiaWinter visitorOct 22-31Jan 8-14Mar 8-143.7%
KentuckyWinter visitorOct 22-31Dec 1-7Apr 1-73.9%
LouisianaWinter visitorOct 22-31Dec 1-7Feb 22-284.4%
South CarolinaWinter visitorOct 22-31Jan 8-14Feb 15-214.6%
CaliforniaAll year, most in winterNov 1-7Jan 8-14Apr 1-717%
FloridaWinter visitorNov 8-14Nov 22-30Feb 8-141.8%
WyomingWinter visitorMar 15-21Nov 1-7Nov 22-308.3%
North DakotaWinter visitorApr 1-7Oct 15-21Nov 8-1412%
ColoradoWinter visitorJul 15-21Nov 1-7Jan 8-148.8%
WashingtonWinter visitorJul 22-31Jan 8-14Jun 22-303.1%
New MexicoWinter visitorAug 15-21Mar 15-21May 15-217.2%
OregonWinter visitorAug 15-21Jan 22-31May 22-316.4%
NebraskaWinter visitorSep 8-14Nov 8-14Jan 1-712%
UtahWinter visitorSep 8-14Nov 8-14May 8-147.1%
IowaWinter visitorSep 22-30Nov 1-7Dec 15-2110%
KansasWinter visitorSep 22-30Nov 1-7May 15-219.0%
Rhode IslandWinter visitorSep 22-30Nov 15-21Apr 8-147.6%

Winter visitor in: Nevada, New Mexico, Wyoming, North Dakota, Colorado, Washington

Summer visitor in: Wisconsin, Michigan, South Dakota, Minnesota, Montana, Idaho