WhenToBird

Mniotilta varia · Parulidae

Black-and-white Warbler: When and Where to See It

Adult female Black-and-white Warbler
Photo: Donald Davesne, CC BY 4.0 via iNaturalist

The Black-and-white Warbler reaches Georgia first, around early March, and South Dakota last, around late April.

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%Jan 1-7: 0.8% of 1114036 checklistsJan 8-14: 0.9% of 824708 checklistsJan 15-21: 0.9% of 825978 checklistsJan 22-31: 0.8% of 1105853 checklistsFeb 1-7: 0.8% of 779772 checklistsFeb 8-14: 0.8% of 864504 checklistsFeb 15-21: 0.6% of 1127933 checklistsFeb 22-28: 0.8% of 840124 checklistsMar 1-7: 0.8% of 839610 checklistsMar 8-14: 1.0% of 870138 checklistsMar 15-21: 1.3% of 898456 checklistsMar 22-31: 1.7% of 1335637 checklistsApr 1-7: 2.0% of 1030617 checklistsApr 8-14: 2.5% of 1124024 checklistsApr 15-21: 3.8% of 1194575 checklistsApr 22-30: 7.2% of 1675723 checklistsMay 1-7: 13% of 1449080 checklistsMay 8-14: 13% of 1538353 checklistsMay 15-21: 10% of 1219898 checklistsMay 22-31: 5.2% of 1452282 checklistsJun 1-7: 3.6% of 900636 checklistsJun 8-14: 3.3% of 829907 checklistsJun 15-21: 3.2% of 773255 checklistsJun 22-30: 2.7% of 916255 checklistsJul 1-7: 2.3% of 717733 checklistsJul 8-14: 1.8% of 658223 checklistsJul 15-21: 1.6% of 638752 checklistsJul 22-31: 1.6% of 895727 checklistsAug 1-7: 1.8% of 655651 checklistsAug 8-14: 2.2% of 650038 checklistsAug 15-21: 3.1% of 654639 checklistsAug 22-31: 5.1% of 974928 checklistsSep 1-7: 6.5% of 765914 checklistsSep 8-14: 7.3% of 738674 checklistsSep 15-21: 7.2% of 750433 checklistsSep 22-30: 5.8% of 944196 checklistsOct 1-7: 4.0% of 760106 checklistsOct 8-14: 2.7% of 793131 checklistsOct 15-21: 1.9% of 728727 checklistsOct 22-31: 1.3% of 959954 checklistsNov 1-7: 0.9% of 709464 checklistsNov 8-14: 0.9% of 693424 checklistsNov 15-21: 0.8% of 653952 checklistsNov 22-30: 0.8% of 871137 checklistsDec 1-7: 0.9% of 627591 checklistsDec 8-14: 0.9% of 642427 checklistsDec 15-21: 0.9% of 775638 checklistsDec 22-31: 0.9% 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 visitorMar 1-7Apr 22-30Oct 22-3112%
LouisianaSummer visitorMar 1-7Apr 22-30May 22-319.9%
ArkansasSummer visitorMar 8-14May 1-7Jun 22-3016%
AlabamaSummer visitorMar 8-14Apr 15-21Oct 15-219.7%
MississippiSummer visitorMar 8-14Apr 15-21Jun 1-77.3%
North CarolinaSummer visitorMar 15-21Apr 22-30Oct 15-2116%
OklahomaSummer visitorMar 15-21May 1-7Jul 15-216.3%
VirginiaSummer visitorMar 22-31May 1-7Oct 8-1416%
MissouriSummer visitorMar 22-31May 1-7Jun 8-1411%
KentuckySummer visitorMar 22-31Sep 8-14Oct 1-79.6%
TennesseeSummer visitorMar 22-31Apr 22-30Oct 8-149.9%
West VirginiaSummer visitorApr 1-7May 8-14Sep 22-3016%
District of ColumbiaSummer visitorApr 8-14May 1-7May 22-3130%
New JerseySummer visitorApr 8-14May 8-14Oct 8-1423%
KansasPasses throughApr 8-14May 8-14Jun 1-77.8%
MaineSummer visitorApr 15-21May 8-14Sep 22-3034%
ConnecticutSummer visitorApr 15-21May 8-14Oct 1-728%
MassachusettsPasses throughApr 15-21May 8-14May 22-3128%
New HampshireSummer visitorApr 15-21May 8-14Sep 22-3028%
Rhode IslandPasses throughApr 15-21May 8-14Oct 1-726%
VermontSummer visitorApr 15-21May 15-21Sep 8-1423%
New YorkSummer visitorApr 15-21May 8-14Oct 8-1420%
IllinoisSummer visitorApr 15-21May 8-14May 22-3117%
OhioPasses throughApr 15-21May 8-14Jun 1-715%
PennsylvaniaSummer visitorApr 15-21May 8-14Oct 1-716%
WisconsinSummer visitorApr 15-21May 8-14Sep 22-3016%
IndianaSummer visitorApr 15-21May 8-14May 22-3110%
MinnesotaSummer visitorApr 22-30Sep 1-7Sep 15-2116%
MichiganSummer visitorApr 22-30May 8-14Sep 22-3012%
North DakotaSummer visitorApr 22-30Aug 22-31Sep 15-2112%
NebraskaPasses throughApr 22-30May 8-14Jun 15-215.3%
South DakotaPasses throughApr 22-30May 8-14Jun 1-76.8%
TexasSummer visitorJul 8-14Apr 22-30Jun 15-2113%
MarylandSummer visitorAug 1-7Sep 8-14Oct 8-1417%
DelawareSummer visitorAug 8-14Sep 8-14Oct 8-1419%
IowaSummer visitorAug 8-14Sep 1-7Sep 22-3016%
South CarolinaSummer visitorAug 15-21Apr 22-30May 22-3111%
FloridaWinter visitorJul 15-21Oct 8-14May 8-1421%

Winter visitor in: Florida

Summer visitor in: Kentucky, Minnesota, North Dakota, Maryland, Delaware, Iowa, Texas, South Carolina