WhenToBird

Passerina caerulea · Cardinalidae

Blue Grosbeak: When and Where to See It

Adult male Blue Grosbeak
Photo: John Rosford, CC BY 4.0 via iNaturalist

The Blue Grosbeak reaches North Carolina first, around the second week of April, and Iowa last, around late May.

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: 0.5% of 1124024 checklistsApr 15-21: 1.6% of 1194575 checklistsApr 22-30: 2.4% of 1675723 checklistsMay 1-7: 2.6% of 1449080 checklistsMay 8-14: 2.5% of 1538353 checklistsMay 15-21: 2.9% of 1219898 checklistsMay 22-31: 3.2% of 1452282 checklistsJun 1-7: 3.2% of 900636 checklistsJun 8-14: 3.2% of 829907 checklistsJun 15-21: 3.2% of 773255 checklistsJun 22-30: 3.5% of 916255 checklistsJul 1-7: 3.7% of 717733 checklistsJul 8-14: 3.7% of 658223 checklistsJul 15-21: 3.9% of 638752 checklistsJul 22-31: 4.2% of 895727 checklistsAug 1-7: 4.4% of 655651 checklistsAug 8-14: 4.3% of 650038 checklistsAug 15-21: 3.7% of 654639 checklistsAug 22-31: 3.1% of 974928 checklistsSep 1-7: 2.5% of 765914 checklistsSep 8-14: 1.9% of 738674 checklistsSep 15-21: 1.6% of 750433 checklistsSep 22-30: 1.2% of 944196 checklistsOct 1-7: 0.9% of 760106 checklistsOct 8-14: 0.6% 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 %
AlabamaSummer visitorApr 1-7Apr 22-30Sep 1-715%
MississippiSummer visitorApr 1-7Apr 22-30Sep 1-713%
LouisianaSummer visitorApr 1-7Apr 22-30Oct 22-3112%
TexasSummer visitorApr 1-7May 1-7Sep 15-217.6%
North CarolinaSummer visitorApr 8-14Jul 15-21Sep 8-1415%
GeorgiaSummer visitorApr 8-14Aug 1-7Sep 1-713%
TennesseeSummer visitorApr 8-14Aug 1-7Sep 1-713%
ArkansasSummer visitorApr 8-14May 8-14Sep 1-711%
South CarolinaSummer visitorApr 8-14May 8-14Sep 1-711%
FloridaSummer visitorApr 8-14Apr 22-30Oct 22-313.0%
DelawareSummer visitorApr 15-21Aug 1-7Sep 15-2123%
MarylandSummer visitorApr 15-21Aug 8-14Sep 15-2111%
VirginiaSummer visitorApr 15-21Aug 1-7Sep 8-1410%
KentuckySummer visitorApr 15-21Jul 22-31Sep 1-79.8%
MissouriSummer visitorApr 15-21Jul 22-31Aug 22-318.2%
OklahomaSummer visitorApr 15-21Jun 8-14Aug 22-319.0%
CaliforniaSummer visitorApr 15-21May 8-14Aug 8-142.3%
KansasSummer visitorApr 22-30Aug 1-7Aug 22-317.5%
IndianaSummer visitorApr 22-30Aug 1-7Sep 1-75.5%
NevadaSummer visitorApr 22-30May 22-31Sep 1-76.6%
District of ColumbiaSummer visitorApr 22-30Jul 8-14Sep 1-74.5%
IllinoisSummer visitorApr 22-30Jul 22-31Sep 1-73.3%
New JerseySummer visitorApr 22-30Aug 1-7Sep 8-144.2%
New MexicoSummer visitorMay 1-7Aug 8-14Sep 15-2120%
ArizonaSummer visitorMay 1-7Aug 8-14Sep 15-2119%
West VirginiaSummer visitorMay 1-7Aug 8-14Sep 8-141.6%
ColoradoSummer visitorMay 8-14Aug 8-14Sep 8-146.2%
NebraskaSummer visitorMay 8-14Aug 1-7Sep 1-76.5%
South DakotaSummer visitorMay 15-21Aug 1-7Aug 22-315.8%
UtahSummer visitorMay 15-21Aug 1-7Sep 1-73.1%
OhioSummer visitorMay 15-21Jul 22-31Aug 22-311.7%
PennsylvaniaSummer visitorMay 15-21Aug 8-14Sep 8-141.5%
IowaSummer visitorMay 22-31Aug 8-14Sep 1-74.1%

Summer visitor in: Alabama, Mississippi, Louisiana, Texas, Arkansas, South Carolina, Florida, California