WhenToBird

Calidris alpina · Scolopacidae

Dunlin: When and Where to See It

Adult Dunlin
Photo: Paulo Martins, CC BY-SA 4.0 via iNaturalist

The Dunlin reaches Pennsylvania first, around the second week of September, and Hawaii last, around mid October.

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%1%2%3%Jan 1-7: 1.3% of 1114036 checklistsJan 8-14: 1.4% of 824708 checklistsJan 15-21: 1.4% of 825978 checklistsJan 22-31: 1.3% of 1105853 checklistsFeb 1-7: 1.1% of 779772 checklistsFeb 8-14: 1.0% of 864504 checklistsFeb 15-21: 0.8% of 1127933 checklistsFeb 22-28: 0.9% of 840124 checklistsMar 1-7: 0.8% of 839610 checklistsMar 8-14: 0.8% of 870138 checklistsMar 15-21: 0.8% of 898456 checklistsMar 22-31: 0.9% of 1335637 checklistsApr 1-7: 0.9% of 1030617 checklistsApr 8-14: 1.1% of 1124024 checklistsApr 15-21: 1.4% of 1194575 checklistsApr 22-30: 1.6% of 1675723 checklistsMay 1-7: 1.5% of 1449080 checklistsMay 8-14: 1.7% of 1538353 checklistsMay 15-21: 2.2% of 1219898 checklistsMay 22-31: 1.5% of 1452282 checklistsJun 1-7: 0.5% of 900636 checklistsJun 8-14: 0.2% 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: 0.3% of 750433 checklistsSep 22-30: 0.5% of 944196 checklistsOct 1-7: 0.8% of 760106 checklistsOct 8-14: 1.1% of 793131 checklistsOct 15-21: 1.5% of 728727 checklistsOct 22-31: 2.1% of 959954 checklistsNov 1-7: 2.5% of 709464 checklistsNov 8-14: 2.3% of 693424 checklistsNov 15-21: 1.9% of 653952 checklistsNov 22-30: 1.7% of 871137 checklistsDec 1-7: 1.5% of 627591 checklistsDec 8-14: 1.3% of 642427 checklistsDec 15-21: 1.2% 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 %
MissouriSummer visitorMar 22-31May 15-21Jun 1-71.2%
OhioSummer visitorApr 1-7May 8-14Jun 1-75.5%
MichiganPasses throughApr 1-7May 22-31Jun 15-213.5%
WisconsinPasses throughApr 1-7May 22-31Jun 15-213.9%
KansasSummer visitorApr 1-7May 8-14Jun 1-71.1%
NebraskaPasses throughApr 1-7May 8-14Jun 1-71.5%
IowaSummer visitorApr 8-14May 15-21Jun 1-72.7%
IllinoisSummer visitorApr 8-14May 15-21Jun 15-212.9%
AlaskaSummer visitorApr 15-21May 1-7Jul 1-78.1%
South DakotaPasses throughApr 15-21May 8-14May 22-312.9%
MinnesotaPasses throughMay 1-7May 22-31Jun 1-72.5%
North DakotaPasses throughMay 1-7May 15-21Jun 1-72.4%
PennsylvaniaPasses throughSep 8-14Nov 1-7Dec 1-71.1%
DelawareSummer visitorSep 15-21May 15-21Jun 1-718%
VermontPasses throughSep 15-21Oct 1-7Nov 8-142.1%
New JerseySummer visitorSep 22-30May 15-21Jun 1-75.4%
TennesseePasses throughOct 1-7Nov 1-7Feb 15-211.5%
OregonSummer visitorOct 8-14Apr 22-30May 15-213.9%
IdahoPasses throughOct 8-14Nov 1-7Dec 8-141.5%
LouisianaSummer visitorOct 15-21Apr 22-30May 22-313.6%
TexasSummer visitorOct 22-31Apr 15-21May 15-213.4%
CaliforniaWinter visitorOct 1-7Nov 1-7May 1-73.4%
IndianaWinter visitorOct 1-7Nov 1-7Dec 1-72.7%
WashingtonWinter visitorOct 1-7Nov 1-7May 8-144.8%
KentuckyWinter visitorOct 1-7Nov 1-7Dec 1-71.5%
MississippiWinter visitorOct 8-14Nov 1-7May 15-215.3%
South CarolinaWinter visitorOct 8-14Nov 15-21May 15-216.6%
AlabamaWinter visitorOct 8-14Nov 8-14May 15-213.7%
MarylandWinter visitorOct 8-14Nov 8-14Jun 1-72.1%
North CarolinaWinter visitorOct 8-14Nov 1-7Jun 1-72.5%
VirginiaWinter visitorOct 8-14Nov 15-21Jun 1-72.1%
FloridaWinter visitorOct 15-21Nov 15-21May 15-213.6%
GeorgiaWinter visitorOct 15-21Nov 8-14May 15-212.0%
HawaiiWinter visitorOct 15-21Nov 1-7Jan 15-211.4%
MassachusettsWinter visitorSep 8-14Nov 1-7Mar 1-72.7%
New YorkWinter visitorSep 15-21Nov 1-7Feb 15-212.6%
Rhode IslandWinter visitorSep 15-21Nov 1-7Feb 1-74.1%
MaineWinter visitorSep 15-21Nov 1-7Dec 1-72.3%
ConnecticutWinter visitorSep 22-30Nov 8-14Jun 8-143.4%
New HampshireWinter visitorSep 22-30Oct 22-31Dec 1-71.2%

Passes through: Michigan, Wisconsin, Nebraska, South Dakota, Minnesota, North Dakota

Summer visitor in: Missouri, Ohio, Kansas, Iowa, Illinois, Alaska, Delaware, New Jersey, Oregon, Louisiana, Texas