WhenToBird

Calidris pusilla · Scolopacidae

Semipalmated Sandpiper: When and Where to See It

Adult Semipalmated Sandpiper
Photo: Kathy Richardson, CC BY 4.0 via iNaturalist

The Semipalmated Sandpiper reaches New Jersey first, around early July, and West Virginia last, around late July.

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%Jan 1-7: 0.1% of 1114036 checklistsJan 8-14: 0.1% of 824708 checklistsJan 15-21: 0.1% of 825978 checklistsJan 22-31: 0.1% of 1105853 checklistsFeb 1-7: 0.1% of 779772 checklistsFeb 8-14: 0.1% of 864504 checklistsFeb 15-21: 0.1% of 1127933 checklistsFeb 22-28: 0.1% of 840124 checklistsMar 1-7: 0.1% of 839610 checklistsMar 8-14: 0.1% of 870138 checklistsMar 15-21: 0.1% of 898456 checklistsMar 22-31: 0.1% of 1335637 checklistsApr 1-7: 0.1% of 1030617 checklistsApr 8-14: 0.2% of 1124024 checklistsApr 15-21: 0.5% of 1194575 checklistsApr 22-30: 0.7% of 1675723 checklistsMay 1-7: 0.8% of 1449080 checklistsMay 8-14: 1.3% of 1538353 checklistsMay 15-21: 2.3% of 1219898 checklistsMay 22-31: 2.4% of 1452282 checklistsJun 1-7: 1.6% of 900636 checklistsJun 8-14: 0.9% of 829907 checklistsJun 15-21: 0.5% of 773255 checklistsJun 22-30: 0.3% of 916255 checklistsJul 1-7: 0.4% of 717733 checklistsJul 8-14: 0.8% of 658223 checklistsJul 15-21: 1.8% of 638752 checklistsJul 22-31: 3.1% of 895727 checklistsAug 1-7: 3.9% of 655651 checklistsAug 8-14: 4.4% of 650038 checklistsAug 15-21: 4.9% of 654639 checklistsAug 22-31: 4.8% of 974928 checklistsSep 1-7: 3.8% of 765914 checklistsSep 8-14: 2.6% of 738674 checklistsSep 15-21: 1.7% of 750433 checklistsSep 22-30: 1.2% of 944196 checklistsOct 1-7: 0.8% of 760106 checklistsOct 8-14: 0.5% of 793131 checklistsOct 15-21: 0.4% of 728727 checklistsOct 22-31: 0.2% of 959954 checklistsNov 1-7: 0.1% of 709464 checklistsNov 8-14: 0.1% of 693424 checklistsNov 15-21: 0.1% of 653952 checklistsNov 22-30: 0.1% of 871137 checklistsDec 1-7: 0.1% of 627591 checklistsDec 8-14: 0.1% of 642427 checklistsDec 15-21: 0.1% of 775638 checklistsDec 22-31: 0.1% 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 %
OklahomaSummer visitorApr 1-7Apr 22-30Jun 1-72.9%
TexasSummer visitorApr 1-7Apr 22-30May 22-312.8%
KansasSummer visitorApr 8-14May 8-14Jun 1-74.6%
LouisianaSummer visitorApr 8-14May 8-14Jun 1-73.7%
NebraskaSummer visitorApr 8-14May 1-7Jun 1-74.9%
MississippiSummer visitorApr 15-21May 15-21Jun 1-75.4%
AlabamaSummer visitorApr 15-21May 15-21Jun 1-74.0%
FloridaSummer visitorApr 15-21May 8-14Jun 8-143.8%
DelawareSummer visitorApr 22-30Aug 8-14Sep 8-1424%
South CarolinaSummer visitorApr 22-30May 15-21Jun 8-144.7%
GeorgiaSummer visitorApr 22-30May 15-21Jun 1-72.3%
AlaskaSummer visitorMay 1-7Jun 8-14Jul 22-318.2%
Rhode IslandSummer visitorMay 8-14Aug 8-14Sep 15-2125%
ConnecticutSummer visitorMay 8-14Aug 8-14Sep 22-3015%
New JerseySummer visitorJul 1-7Aug 8-14Sep 22-3017%
MassachusettsSummer visitorJul 1-7Aug 15-21Sep 22-3014%
North DakotaSummer visitorJul 1-7Aug 1-7Sep 1-77.3%
WashingtonPasses throughJul 1-7Aug 15-21Sep 1-71.7%
MaineSummer visitorJul 8-14Aug 22-31Sep 22-3014%
IllinoisSummer visitorJul 8-14Aug 15-21Sep 8-147.8%
New YorkSummer visitorJul 8-14Aug 15-21Sep 22-308.8%
OhioSummer visitorJul 8-14Aug 15-21Sep 22-307.7%
South DakotaSummer visitorJul 8-14Aug 8-14Sep 8-144.5%
WyomingSummer visitorJul 8-14Aug 22-31Sep 22-301.3%
New HampshireSummer visitorJul 15-21Aug 22-31Sep 22-308.1%
IowaSummer visitorJul 15-21Aug 15-21Sep 8-145.7%
IndianaSummer visitorJul 15-21Aug 15-21Sep 15-216.1%
MichiganSummer visitorJul 15-21Aug 15-21Sep 8-145.7%
ArkansasSummer visitorJul 15-21Aug 22-31Sep 15-214.6%
IdahoPasses throughJul 15-21Aug 8-14Sep 8-142.7%
MarylandSummer visitorJul 15-21Aug 15-21Sep 22-304.8%
MinnesotaSummer visitorJul 15-21Aug 8-14Sep 8-143.4%
MissouriSummer visitorJul 15-21Aug 15-21Sep 8-143.2%
MontanaPasses throughJul 15-21Aug 8-14Sep 1-74.0%
North CarolinaSummer visitorJul 15-21Aug 15-21Sep 22-304.0%
PennsylvaniaSummer visitorJul 15-21Aug 22-31Oct 1-73.3%
TennesseeSummer visitorJul 15-21Aug 22-31Sep 15-212.8%
VirginiaSummer visitorJul 15-21Aug 15-21Sep 22-303.9%
WisconsinSummer visitorJul 15-21Aug 15-21Sep 8-144.2%
ColoradoSummer visitorJul 15-21Aug 22-31Sep 15-211.5%
OregonPasses throughJul 15-21Aug 15-21Sep 1-71.4%
VermontPasses throughJul 22-31Aug 22-31Sep 22-305.6%
KentuckySummer visitorJul 22-31Aug 22-31Sep 15-214.9%
NevadaPasses throughJul 22-31Aug 8-14Sep 1-71.2%
West VirginiaSummer visitorJul 22-31Aug 22-31Sep 15-211.0%

Summer visitor in: Oklahoma, Texas, Kansas, Louisiana, Nebraska, Mississippi, Alabama, Florida, South Carolina, Georgia, Delaware, Alaska, Rhode Island, Connecticut