WhenToBird

Butorides virescens · Ardeidae

Green Heron: When and Where to See It

Adult male Green Heron
Photo: Jonathan Eisen, CC BY 4.0 via iNaturalist

The Green Heron reaches California first, around early March, and Washington last, around the second week of June.

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.

Embed this map on your site

0%5%10%Jan 1-7: 1.0% of 1114036 checklistsJan 8-14: 1.1% of 824708 checklistsJan 15-21: 1.2% of 825978 checklistsJan 22-31: 1.2% of 1105853 checklistsFeb 1-7: 1.1% of 779772 checklistsFeb 8-14: 1.0% of 864504 checklistsFeb 15-21: 0.9% of 1127933 checklistsFeb 22-28: 1.1% of 840124 checklistsMar 1-7: 1.1% of 839610 checklistsMar 8-14: 1.1% of 870138 checklistsMar 15-21: 1.1% of 898456 checklistsMar 22-31: 1.3% of 1335637 checklistsApr 1-7: 1.7% of 1030617 checklistsApr 8-14: 2.3% of 1124024 checklistsApr 15-21: 3.4% of 1194575 checklistsApr 22-30: 4.6% of 1675723 checklistsMay 1-7: 5.5% of 1449080 checklistsMay 8-14: 5.7% of 1538353 checklistsMay 15-21: 5.8% of 1219898 checklistsMay 22-31: 5.4% of 1452282 checklistsJun 1-7: 5.3% of 900636 checklistsJun 8-14: 5.3% of 829907 checklistsJun 15-21: 5.5% of 773255 checklistsJun 22-30: 5.8% of 916255 checklistsJul 1-7: 6.5% of 717733 checklistsJul 8-14: 7.0% of 658223 checklistsJul 15-21: 7.4% of 638752 checklistsJul 22-31: 8.2% of 895727 checklistsAug 1-7: 8.6% of 655651 checklistsAug 8-14: 8.5% of 650038 checklistsAug 15-21: 8.4% of 654639 checklistsAug 22-31: 8.2% of 974928 checklistsSep 1-7: 7.5% of 765914 checklistsSep 8-14: 6.2% of 738674 checklistsSep 15-21: 4.9% of 750433 checklistsSep 22-30: 3.5% of 944196 checklistsOct 1-7: 2.3% of 760106 checklistsOct 8-14: 1.6% of 793131 checklistsOct 15-21: 1.3% of 728727 checklistsOct 22-31: 1.2% of 959954 checklistsNov 1-7: 1.2% of 709464 checklistsNov 8-14: 1.3% of 693424 checklistsNov 15-21: 1.2% of 653952 checklistsNov 22-30: 1.2% of 871137 checklistsDec 1-7: 1.2% of 627591 checklistsDec 8-14: 1.1% of 642427 checklistsDec 15-21: 1.0% of 775638 checklistsDec 22-31: 1.1% 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 %
CaliforniaSummer visitorMar 1-7Sep 1-7Nov 22-305.8%
LouisianaSummer visitorMar 15-21Jul 1-7Sep 15-2116%
South CarolinaSummer visitorMar 15-21Jul 8-14Sep 8-1416%
AlabamaSummer visitorMar 15-21Jul 22-31Sep 8-149.8%
GeorgiaSummer visitorMar 15-21Jul 15-21Sep 8-149.7%
MississippiSummer visitorMar 22-31Jul 8-14Sep 8-1414%
TexasSummer visitorMar 22-31Aug 1-7Sep 22-3013%
NevadaSummer visitorMar 22-31Aug 1-7Jan 15-215.5%
ArkansasSummer visitorApr 1-7Aug 8-14Sep 15-2114%
District of ColumbiaSummer visitorApr 1-7Jul 8-14Sep 15-2113%
TennesseeSummer visitorApr 1-7Jul 22-31Sep 15-2114%
VirginiaSummer visitorApr 1-7Aug 1-7Sep 15-2114%
North CarolinaSummer visitorApr 1-7Aug 1-7Sep 15-219.9%
DelawareSummer visitorApr 8-14Jul 8-14Sep 8-1416%
MarylandSummer visitorApr 8-14Aug 1-7Sep 22-3016%
KentuckySummer visitorApr 8-14Aug 22-31Sep 22-3010%
PennsylvaniaSummer visitorApr 8-14Aug 8-14Sep 22-3012%
West VirginiaSummer visitorApr 8-14Aug 8-14Sep 22-3012%
IndianaSummer visitorApr 15-21Aug 8-14Sep 22-3013%
OhioSummer visitorApr 15-21Aug 8-14Sep 15-2114%
IllinoisSummer visitorApr 15-21Aug 8-14Sep 15-2112%
MichiganSummer visitorApr 15-21Aug 8-14Sep 15-2112%
New JerseySummer visitorApr 15-21Aug 8-14Sep 22-3012%
WisconsinSummer visitorApr 15-21Aug 8-14Sep 15-2112%
MissouriSummer visitorApr 15-21Aug 8-14Sep 15-218.8%
New YorkSummer visitorApr 15-21Aug 8-14Sep 22-3010%
OklahomaSummer visitorApr 15-21Aug 1-7Sep 15-218.7%
KansasSummer visitorApr 15-21Jul 15-21Sep 15-216.4%
New MexicoSummer visitorApr 15-21Sep 1-7Sep 22-301.9%
MinnesotaSummer visitorApr 22-30Aug 8-14Sep 15-2114%
Rhode IslandSummer visitorApr 22-30Aug 1-7Sep 15-2114%
MassachusettsSummer visitorApr 22-30Aug 8-14Sep 15-219.4%
ConnecticutSummer visitorApr 22-30Aug 8-14Sep 22-306.8%
IowaSummer visitorApr 22-30Aug 15-21Sep 22-306.6%
OregonSummer visitorApr 22-30Aug 22-31Oct 1-75.2%
NebraskaSummer visitorApr 22-30Aug 15-21Sep 15-214.2%
VermontSummer visitorApr 22-30Aug 8-14Sep 15-215.0%
New HampshireSummer visitorMay 1-7Aug 8-14Sep 15-214.7%
South DakotaSummer visitorMay 1-7Aug 8-14Sep 22-304.9%
MaineSummer visitorMay 1-7Aug 15-21Sep 15-211.7%
WashingtonSummer visitorJun 8-14Sep 1-7Oct 1-72.5%
North DakotaSummer visitorJun 22-30Aug 15-21Sep 22-302.3%
FloridaYear-round–Jun 1-7–16%
ArizonaYear-round–Sep 22-30–6.9%

Summer visitor in: North Dakota