WhenToBird

Riparia riparia · Hirundinidae

Bank Swallow: When and Where to See It

Adult Bank Swallow
Photo: SteveM4560, CC BY 4.0 via iNaturalist

The Bank Swallow reaches Utah first, around the second week of April, and Tennessee last, around early 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%1%2%3%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: 0.3% of 1124024 checklistsApr 15-21: 0.6% of 1194575 checklistsApr 22-30: 1.2% of 1675723 checklistsMay 1-7: 1.8% of 1449080 checklistsMay 8-14: 2.2% of 1538353 checklistsMay 15-21: 2.4% of 1219898 checklistsMay 22-31: 2.2% of 1452282 checklistsJun 1-7: 1.8% of 900636 checklistsJun 8-14: 1.6% of 829907 checklistsJun 15-21: 1.6% of 773255 checklistsJun 22-30: 1.6% of 916255 checklistsJul 1-7: 1.8% of 717733 checklistsJul 8-14: 2.1% of 658223 checklistsJul 15-21: 2.2% of 638752 checklistsJul 22-31: 2.4% of 895727 checklistsAug 1-7: 2.4% of 655651 checklistsAug 8-14: 2.3% of 650038 checklistsAug 15-21: 2.2% of 654639 checklistsAug 22-31: 1.8% of 974928 checklistsSep 1-7: 1.3% of 765914 checklistsSep 8-14: 0.8% of 738674 checklistsSep 15-21: 0.4% of 750433 checklistsSep 22-30: 0.2% 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: 0.1% 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 %
NevadaSummer visitorApr 1-7May 1-7Sep 8-144.8%
AlabamaSummer visitorApr 1-7Apr 22-30May 15-211.2%
UtahSummer visitorApr 8-14Aug 15-21Sep 8-148.4%
New MexicoSummer visitorApr 8-14May 1-7Sep 15-213.9%
OklahomaSummer visitorApr 8-14May 8-14May 22-311.5%
Rhode IslandSummer visitorApr 15-21Jul 8-14Aug 15-2110%
IdahoSummer visitorApr 15-21Aug 8-14Sep 1-77.5%
IllinoisSummer visitorApr 15-21Jul 22-31Aug 22-316.8%
NebraskaSummer visitorApr 15-21Aug 8-14Sep 1-75.2%
OhioSummer visitorApr 15-21Aug 1-7Sep 1-75.1%
ColoradoSummer visitorApr 15-21May 8-14Sep 1-73.1%
MissouriSummer visitorApr 15-21Aug 8-14Sep 8-143.0%
District of ColumbiaPasses throughApr 15-21May 8-14Jun 1-71.8%
KentuckySummer visitorApr 15-21Aug 8-14Sep 1-72.3%
North DakotaSummer visitorApr 22-30May 22-31Aug 22-3111%
IowaSummer visitorApr 22-30Aug 8-14Sep 8-146.3%
South DakotaSummer visitorApr 22-30May 15-21Aug 22-315.3%
WyomingSummer visitorApr 22-30May 22-31Aug 22-315.3%
IndianaSummer visitorApr 22-30Jul 22-31Aug 22-313.4%
MichiganSummer visitorApr 22-30Jul 15-21Aug 15-214.2%
New JerseySummer visitorApr 22-30Aug 1-7Sep 1-73.0%
New YorkSummer visitorApr 22-30Jul 22-31Aug 22-314.1%
WisconsinSummer visitorApr 22-30May 15-21Aug 22-313.8%
VermontSummer visitorApr 22-30May 15-21Sep 1-71.6%
MontanaSummer visitorMay 1-7May 22-31Aug 22-316.6%
ConnecticutSummer visitorMay 1-7Jul 15-21Sep 1-73.5%
MassachusettsSummer visitorMay 1-7Jul 15-21Aug 22-314.1%
MinnesotaSummer visitorMay 1-7Jul 8-14Aug 22-313.1%
New HampshireSummer visitorMay 1-7Jul 15-21Aug 15-212.6%
WashingtonSummer visitorMay 1-7May 22-31Sep 1-73.4%
OregonSummer visitorMay 1-7Aug 8-14Sep 1-72.1%
MaineSummer visitorMay 8-14Jul 15-21Aug 22-311.6%
AlaskaSummer visitorMay 15-21Jun 1-7Aug 1-75.0%
DelawarePasses throughJun 22-30Jul 22-31Aug 22-317.3%
MarylandSummer visitorJun 22-30Aug 8-14Sep 1-72.5%
PennsylvaniaSummer visitorJul 1-7Aug 8-14Sep 1-72.2%
TennesseeSummer visitorJul 1-7Aug 15-21Sep 15-211.3%
KansasSummer visitorJul 15-21Aug 1-7Sep 15-212.9%
ArkansasSummer visitorJul 15-21Aug 15-21Sep 15-211.2%
MississippiSummer visitorJul 15-21Aug 22-31Sep 22-301.4%
ArizonaSummer visitorJul 22-31Sep 1-7Oct 1-73.2%
TexasSummer visitorJul 22-31Sep 8-14Oct 15-212.0%
FloridaPasses throughAug 8-14Aug 22-31Sep 8-142.5%
LouisianaSummer visitorAug 8-14Sep 1-7Oct 8-142.4%

Passes through: District of Columbia, Florida

Summer visitor in: Nevada, Alabama, New Mexico, Oklahoma, Colorado, Kansas, Arkansas, Mississippi, Arizona, Texas, Louisiana