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Black-and-white Warbler (Mniotilta varia)
(c) Holly Merker, some rights reserved (CC BY-NC), uploaded by Holly Merker · CC BY-NC 4.0 (opens in a new tab) · iNaturalist (opens in a new tab)
BirdsIn Ohio

Black-and-white Warbler

Mniotilta varia (Linnaeus, 1766)

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Passeriformes
Family
Parulidae
Genus
Mniotilta
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Range

Where it is recorded

Season shown in 0 of Ohio's 88 counties. Its mapped range covers 88. Explore Ohio

  • No result yet (0)
  • Within its mapped range (50)
  • Recorded, too few records for a result (33)
  • Recorded, season not shown (5)
  • Season shown (0)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Range: USGS Gap Analysis Project, Species Range Maps CONUS_2001 (2018). Show as a table
Counties as a table
Black-and-white Warbler by Ohio county: records and mapped range
CountyRecordsIn mapped range
Adams CountyNo qualifying records yetYes: summer
Allen CountyNo qualifying records yetYes: migration
Ashland CountyRecorded, too few records for a resultYes: summer
Ashtabula CountyNo qualifying records yetYes: migration
Athens CountyRecorded, too few records for a resultYes: summer
Auglaize CountyNo qualifying records yetYes: migration
Belmont CountyNo qualifying records yetYes: summer
Brown CountyRecorded, too few records for a resultYes: summer
Butler CountyRecorded, too few records for a resultYes: summer
Carroll CountyNo qualifying records yetYes: summer
Champaign CountyNo qualifying records yetYes: summer
Clark CountyRecorded, too few records for a resultYes: summer
Clermont CountyRecorded, too few records for a resultYes: summer
Clinton CountyNo qualifying records yetYes: summer
Columbiana CountyNo qualifying records yetYes: summer
Coshocton CountyRecorded, too few records for a resultYes: summer
Crawford CountyNo qualifying records yetYes: summer, migration
Cuyahoga County64 · Recorded, season not shownYes: summer, migration
Darke CountyRecorded, too few records for a resultYes: summer, migration
Defiance CountyNo qualifying records yetYes: migration
Delaware CountyRecorded, too few records for a resultYes: summer
Erie CountyRecorded, too few records for a resultYes: migration
Fairfield CountyRecorded, too few records for a resultYes: summer
Fayette CountyNo qualifying records yetYes: summer
Franklin County39 · Recorded, season not shownYes: summer
Fulton CountyNo qualifying records yetYes: migration
Gallia CountyNo qualifying records yetYes: summer
Geauga CountyRecorded, too few records for a resultYes: migration
Greene CountyRecorded, too few records for a resultYes: summer
Guernsey CountyNo qualifying records yetYes: summer
Hamilton CountyRecorded, too few records for a resultYes: summer
Hancock CountyRecorded, too few records for a resultYes: migration
Hardin CountyNo qualifying records yetYes: migration
Harrison CountyRecorded, too few records for a resultYes: summer
Henry CountyNo qualifying records yetYes: migration
Highland CountyNo qualifying records yetYes: summer
Hocking CountyRecorded, too few records for a resultYes: summer
Holmes CountyNo qualifying records yetYes: summer
Huron CountyNo qualifying records yetYes: summer, migration
Jackson CountyNo qualifying records yetYes: summer
Jefferson CountyRecorded, too few records for a resultYes: summer
Knox CountyNo qualifying records yetYes: summer
Lake County23 · Recorded, season not shownYes: migration
Lawrence CountyRecorded, too few records for a resultYes: summer
Licking CountyRecorded, too few records for a resultYes: summer
Logan CountyNo qualifying records yetYes: summer, migration
Lorain CountyRecorded, too few records for a resultYes: summer, migration
Lucas County129 · Recorded, season not shownYes: migration
Madison CountyNo qualifying records yetYes: summer
Mahoning CountyNo qualifying records yetYes: summer
Marion CountyNo qualifying records yetYes: summer, migration
Medina CountyRecorded, too few records for a resultYes: summer
Meigs CountyNo qualifying records yetYes: summer
Mercer CountyNo qualifying records yetYes: migration
Miami CountyNo qualifying records yetYes: summer
Monroe CountyNo qualifying records yetYes: summer
Montgomery CountyRecorded, too few records for a resultYes: summer
Morgan CountyNo qualifying records yetYes: summer
Morrow CountyNo qualifying records yetYes: summer
Muskingum CountyNo qualifying records yetYes: summer
Noble CountyNo qualifying records yetYes: summer
Ottawa CountyRecorded, too few records for a resultYes: migration
Paulding CountyNo qualifying records yetYes: migration
Perry CountyNo qualifying records yetYes: summer
Pickaway CountyNo qualifying records yetYes: summer
Pike CountyNo qualifying records yetYes: summer
Portage CountyRecorded, too few records for a resultYes: summer, migration
Preble CountyNo qualifying records yetYes: summer
Putnam CountyNo qualifying records yetYes: migration
Richland CountyRecorded, too few records for a resultYes: summer, migration
Ross CountyNo qualifying records yetYes: summer
Sandusky CountyNo qualifying records yetYes: migration
Scioto CountyRecorded, too few records for a resultYes: summer
Seneca CountyNo qualifying records yetYes: migration
Shelby CountyNo qualifying records yetYes: summer, migration
Stark CountyRecorded, too few records for a resultYes: summer
Summit County39 · Recorded, season not shownYes: summer, migration
Trumbull CountyRecorded, too few records for a resultYes: summer, migration
Tuscarawas CountyRecorded, too few records for a resultYes: summer
Union CountyNo qualifying records yetYes: summer, migration
Van Wert CountyNo qualifying records yetYes: migration
Vinton CountyRecorded, too few records for a resultYes: summer
Warren CountyNo qualifying records yetYes: summer
Washington CountyNo qualifying records yetYes: summer
Wayne CountyRecorded, too few records for a resultYes: summer
Williams CountyNo qualifying records yetYes: summer, migration
Wood CountyRecorded, too few records for a resultYes: migration
Wyandot CountyNo qualifying records yetYes: migration

Season

When it is recorded

In Ohio

Late April to mid-September, middle week May 10–16

Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all

Records per week from 628 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.

Recorded on 276 dates. Latest record: October 2025.

Show as a table
Records of Black-and-white Warbler in Ohio each week, and records of all species
WeekRecords of Black-and-white WarblerYears recordedRecords of all species
Jan 4–10116,211
Jan 11–17005,146
Jan 18–24004,645
Jan 25–31004,698
Feb 1–7006,023
Feb 8–14005,888
Feb 15–21005,436
Feb 22–28006,846
Mar 1–7008,321
Mar 8–140010,384
Mar 15–210012,620
Mar 22–280013,949
Mar 29 – Apr 40019,661
Apr 5–110026,860
Apr 12–187439,925
Apr 19–2510541,623
Apr 26 – May 247956,391
May 3–91491052,952
May 10–161741053,785
May 17–23941057,698
May 24–3012654,651
May 31 – Jun 63353,099
Jun 7–136453,700
Jun 14–201156,625
Jun 21–275455,361
Jun 28 – Jul 40058,477
Jul 5–112261,336
Jul 12–180064,722
Jul 19–250069,753
Jul 26 – Aug 11159,416
Aug 2–80059,712
Aug 9–150055,994
Aug 16–222254,328
Aug 23–2911651,772
Aug 30 – Sep 516957,167
Sep 6–1231959,075
Sep 13–1916754,543
Sep 20–2618645,860
Sep 27 – Oct 316643,180
Oct 4–105337,841
Oct 11–171130,824
Oct 18–240021,156
Oct 25–310019,021
Nov 1–70014,172
Nov 8–140012,621
Nov 15–21007,965
Nov 22–28008,136
Nov 29 – Dec 5006,083
Dec 6–12006,004
Dec 13–19005,423
Dec 20–26005,661
Dec 27 – Jan 2008,459

What these results show

These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.

Identification

How to identify it

Often confused with

  • Downy Woodpecker Dryobates pubescens37 identifications worldwide named one where the other was meant
  • Blackpoll Warbler Setophaga striata36 identifications worldwide named one where the other was meant
  • Yellow-rumped Warbler Setophaga coronata34 identifications worldwide named one where the other was meant
  • Yellow-throated Warbler Setophaga dominica19 identifications worldwide named one where the other was meant
  • Ovenbird Seiurus aurocapilla17 identifications worldwide named one where the other was meant

From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.

Months not reported

  1. Jan: recorded
  2. Feb: no record
  3. Mar: no record
  4. Apr: recorded
  5. May: recorded
  6. Jun: recorded
  7. Jul: recorded
  8. Aug: recorded
  9. Sep: recorded
  10. Oct: recorded
  11. Nov: no record
  12. Dec: no record

Not reported in Ohio in February to March and November to December, 2016 to 2025.

Land cover where it is recorded

Land coverIts recordsAll Ohio records
Developed41%49%
Forest30%31%
Wetland26%5%
Farmland2%11%
Barren0.5%0.6%
Grassland and shrub0.5%0.9%
Open water0.5%3%

From 191 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)

Sources

Where these results come from

  • Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
  • Seasons use the published method and its evidence thresholds. Methods
  • See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.

Records behind the Ohio result

628 records from 2 datasets.

To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).

A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.