WhenToBird

Polioptila caerulea · Polioptilidae

Blue-gray Gnatcatcher: When and Where to See It

Adult Blue-gray Gnatcatcher
Photo: Laura Clark, CC BY 4.0 via iNaturalist

The Blue-gray Gnatcatcher reaches Georgia first, around late February, and Idaho last, around early 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%5%10%15%20%Jan 1-7: 3.8% of 1114036 checklistsJan 8-14: 4.0% of 824708 checklistsJan 15-21: 4.0% of 825978 checklistsJan 22-31: 3.8% of 1105853 checklistsFeb 1-7: 3.7% of 779772 checklistsFeb 8-14: 3.4% of 864504 checklistsFeb 15-21: 2.8% of 1127933 checklistsFeb 22-28: 3.5% of 840124 checklistsMar 1-7: 3.0% of 839610 checklistsMar 8-14: 3.0% of 870138 checklistsMar 15-21: 3.3% of 898456 checklistsMar 22-31: 5.1% of 1335637 checklistsApr 1-7: 7.6% of 1030617 checklistsApr 8-14: 10% of 1124024 checklistsApr 15-21: 13% of 1194575 checklistsApr 22-30: 16% of 1675723 checklistsMay 1-7: 18% of 1449080 checklistsMay 8-14: 17% of 1538353 checklistsMay 15-21: 15% of 1219898 checklistsMay 22-31: 11% of 1452282 checklistsJun 1-7: 9.4% of 900636 checklistsJun 8-14: 8.6% of 829907 checklistsJun 15-21: 8.1% of 773255 checklistsJun 22-30: 7.6% of 916255 checklistsJul 1-7: 7.2% of 717733 checklistsJul 8-14: 6.7% of 658223 checklistsJul 15-21: 6.3% of 638752 checklistsJul 22-31: 6.4% of 895727 checklistsAug 1-7: 6.5% of 655651 checklistsAug 8-14: 7.0% of 650038 checklistsAug 15-21: 7.7% of 654639 checklistsAug 22-31: 8.9% of 974928 checklistsSep 1-7: 9.2% of 765914 checklistsSep 8-14: 8.1% of 738674 checklistsSep 15-21: 6.5% of 750433 checklistsSep 22-30: 5.5% of 944196 checklistsOct 1-7: 4.7% of 760106 checklistsOct 8-14: 4.6% of 793131 checklistsOct 15-21: 4.5% of 728727 checklistsOct 22-31: 4.2% of 959954 checklistsNov 1-7: 4.1% of 709464 checklistsNov 8-14: 4.2% of 693424 checklistsNov 15-21: 4.1% of 653952 checklistsNov 22-30: 4.3% of 871137 checklistsDec 1-7: 4.4% of 627591 checklistsDec 8-14: 4.3% of 642427 checklistsDec 15-21: 4.1% of 775638 checklistsDec 22-31: 4.4% 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 %
GeorgiaSummer visitorFeb 22-28Apr 15-21Sep 15-2137%
South CarolinaSummer visitorFeb 22-28Apr 8-14Sep 15-2136%
AlabamaSummer visitorMar 1-7May 8-14Oct 8-1427%
North CarolinaSummer visitorMar 8-14Apr 15-21Sep 15-2139%
TennesseeSummer visitorMar 15-21Apr 15-21Sep 8-1437%
VirginiaSummer visitorMar 15-21Apr 22-30Sep 8-1435%
ArkansasSummer visitorMar 15-21Apr 15-21Sep 8-1432%
OklahomaSummer visitorMar 15-21Apr 15-21Sep 8-1424%
District of ColumbiaSummer visitorMar 22-31Apr 22-30Sep 8-1448%
MarylandSummer visitorMar 22-31Apr 22-30Sep 8-1438%
KentuckySummer visitorMar 22-31Apr 15-21Sep 8-1434%
MissouriSummer visitorMar 22-31Apr 22-30Sep 8-1434%
DelawareSummer visitorMar 22-31Apr 22-30Sep 8-1429%
New JerseySummer visitorMar 22-31Apr 22-30Sep 8-1429%
MississippiAll year, most in springMar 22-31Apr 8-14Jun 15-2126%
West VirginiaSummer visitorMar 22-31Apr 22-30Sep 1-724%
KansasSummer visitorMar 22-31May 1-7Sep 8-1421%
NevadaSummer visitorMar 22-31Apr 22-30Sep 22-308.4%
IllinoisSummer visitorApr 1-7May 8-14Sep 1-734%
IndianaSummer visitorApr 1-7May 1-7Sep 1-734%
OhioSummer visitorApr 1-7May 1-7Aug 1-732%
PennsylvaniaSummer visitorApr 1-7May 1-7Sep 1-723%
Rhode IslandSummer visitorApr 1-7May 1-7Sep 8-1421%
ConnecticutSummer visitorApr 1-7May 1-7Sep 8-1418%
UtahSummer visitorApr 1-7May 15-21Sep 15-2114%
New YorkSummer visitorApr 1-7May 1-7Sep 8-1411%
New MexicoSummer visitorApr 1-7May 1-7Sep 22-306.6%
IowaSummer visitorApr 8-14May 8-14Sep 8-1421%
MichiganSummer visitorApr 8-14May 8-14Sep 8-1416%
MassachusettsSummer visitorApr 8-14May 1-7Sep 1-712%
WisconsinSummer visitorApr 15-21May 8-14Sep 1-722%
NebraskaSummer visitorApr 15-21May 8-14Sep 15-217.6%
ColoradoSummer visitorApr 15-21May 8-14Sep 22-306.7%
New HampshireSummer visitorApr 15-21May 8-14Sep 1-76.3%
VermontSummer visitorApr 15-21May 8-14Sep 1-73.1%
MinnesotaSummer visitorApr 22-30May 15-21Sep 8-149.3%
MainePasses throughApr 22-30May 8-14May 22-312.2%
WyomingSummer visitorApr 22-30May 8-14Oct 1-72.4%
South DakotaSummer visitorMay 1-7May 8-14Sep 8-143.3%
IdahoSummer visitorMay 1-7May 22-31Sep 15-212.1%
TexasAll year, most in fallAug 15-21Sep 8-14Oct 1-724%
LouisianaAll year, most in fallAug 15-21Sep 22-30Jan 1-728%
FloridaAll year, most in fallSep 1-7Oct 1-7Feb 1-749%
CaliforniaAll year, most in fallSep 1-7Nov 8-14Jan 22-315.7%
ArizonaYear-round–Dec 1-7–5.7%

Winter visitor in: Louisiana, Florida, California

Passes through: Texas