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Nearby · Hamilton Co.
Tree Swallow (Tachycineta bicolor)
no rights reserved, uploaded by Carter Dorscht · CC0 1.0 (opens in a new tab) · iNaturalist (opens in a new tab)
BirdsIn Hamilton County, Ohio

Tree Swallow

Tachycineta bicolor (Vieillot, 1808)

Tree Swallow in all of Ohio
Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Passeriformes
Family
Hirundinidae
Genus
Tachycineta
Near Hamilton County

Range

Where it is recorded

Season shown in 10 of Ohio's 88 counties. Its mapped range covers 88. Explore Ohio

  • No result yet (0)
  • Within its mapped range (12)
  • Recorded, too few records for a result (58)
  • Recorded, season not shown (8)
  • Season shown (10)
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
Tree Swallow by Ohio county: records and mapped range
CountyRecordsIn mapped range
Adams CountyRecorded, too few records for a resultYes: summer
Allen CountyRecorded, too few records for a resultYes: summer
Ashland CountyRecorded, too few records for a resultYes: summer
Ashtabula CountyRecorded, too few records for a resultYes: summer
Athens County74 · Season shownYes: summer
Auglaize CountyRecorded, too few records for a resultYes: summer
Belmont CountyRecorded, too few records for a resultYes: 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 CountyRecorded, too few records for a resultYes: summer
Clark CountyRecorded, too few records for a resultYes: summer
Clermont County24 · Season shownYes: summer
Clinton CountyRecorded, too few records for a resultYes: summer
Columbiana CountyRecorded, too few records for a resultYes: summer
Coshocton CountyNo qualifying records yetYes: summer
Crawford CountyRecorded, too few records for a resultYes: summer
Cuyahoga County48 · Season shownYes: summer
Darke CountyRecorded, too few records for a resultYes: summer
Defiance CountyNo qualifying records yetYes: summer
Delaware County30 · Recorded, season not shownYes: summer
Erie County49 · Recorded, season not shownYes: summer
Fairfield CountyRecorded, too few records for a resultYes: summer
Fayette CountyRecorded, too few records for a resultYes: summer
Franklin County106 · Season shownYes: summer
Fulton CountyRecorded, too few records for a resultYes: summer
Gallia CountyRecorded, too few records for a resultYes: summer
Geauga County47 · Season shownYes: summer
Greene County37 · Season shownYes: summer
Guernsey CountyNo qualifying records yetYes: summer
Hamilton County79 · Recorded, season not shownYes: summer
Hancock CountyRecorded, too few records for a resultYes: summer
Hardin CountyRecorded, too few records for a resultYes: summer
Harrison CountyRecorded, too few records for a resultYes: summer
Henry CountyRecorded, too few records for a resultYes: summer
Highland CountyRecorded, too few records for a resultYes: summer
Hocking CountyRecorded, too few records for a resultYes: summer
Holmes CountyRecorded, too few records for a resultYes: summer
Huron CountyNo qualifying records yetYes: summer
Jackson CountyRecorded, too few records for a resultYes: summer
Jefferson CountyRecorded, too few records for a resultYes: summer
Knox CountyRecorded, too few records for a resultYes: summer
Lake County34 · Season shownYes: summer
Lawrence CountyRecorded, too few records for a resultYes: summer
Licking CountyRecorded, too few records for a resultYes: summer
Logan CountyRecorded, too few records for a resultYes: summer
Lorain County136 · Season shownYes: summer
Lucas County213 · Season shownYes: summer
Madison CountyRecorded, too few records for a resultYes: summer
Mahoning CountyRecorded, too few records for a resultYes: summer
Marion CountyRecorded, too few records for a resultYes: summer
Medina County44 · Recorded, season not shownYes: summer
Meigs CountyNo qualifying records yetYes: summer
Mercer CountyRecorded, too few records for a resultYes: summer
Miami CountyRecorded, too few records for a resultYes: summer
Monroe CountyNo qualifying records yetYes: summer
Montgomery CountyRecorded, too few records for a resultYes: summer
Morgan CountyRecorded, too few records for a resultYes: summer
Morrow CountyRecorded, too few records for a resultYes: summer
Muskingum CountyRecorded, too few records for a resultYes: summer
Noble CountyNo qualifying records yetYes: summer
Ottawa County68 · Recorded, season not shownYes: summer
Paulding CountyRecorded, too few records for a resultYes: summer
Perry CountyNo qualifying records yetYes: summer
Pickaway CountyRecorded, too few records for a resultYes: summer
Pike CountyRecorded, too few records for a resultYes: summer
Portage CountyRecorded, too few records for a resultYes: summer
Preble CountyRecorded, too few records for a resultYes: summer
Putnam CountyNo qualifying records yetYes: summer
Richland CountyRecorded, too few records for a resultYes: summer
Ross CountyRecorded, too few records for a resultYes: summer
Sandusky CountyRecorded, too few records for a resultYes: summer
Scioto CountyRecorded, too few records for a resultYes: summer
Seneca CountyNo qualifying records yetYes: summer
Shelby CountyRecorded, too few records for a resultYes: summer
Stark County48 · Recorded, season not shownYes: summer
Summit County328 · Season shownYes: summer
Trumbull CountyRecorded, too few records for a resultYes: summer
Tuscarawas CountyRecorded, too few records for a resultYes: summer
Union CountyRecorded, too few records for a resultYes: summer
Van Wert CountyNo qualifying records yetYes: summer
Vinton CountyRecorded, too few records for a resultYes: summer
Warren County30 · Recorded, season not shownYes: summer
Washington CountyRecorded, too few records for a resultYes: summer
Wayne County29 · Recorded, season not shownYes: summer
Williams CountyRecorded, too few records for a resultYes: summer
Wood CountyRecorded, too few records for a resultYes: summer
Wyandot CountyRecorded, too few records for a resultYes: summer

Season

When it is recorded

In Hamilton County

Not enough evidence

The weeks are still too uncertain to show a season. Based on 79 records in 8 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
Show over the bars
Recording in Hamilton County · records of all species each week, 87,019 in all

Records per week from 79 records in 8 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.

Show as a table
Records of Tree Swallow in Hamilton County each week, and records of all species
WeekRecords of Tree SwallowYears recordedRecords of all species
Jan 4–1000392
Jan 11–1700344
Jan 18–2400312
Jan 25–3100206
Feb 1–700357
Feb 8–1400383
Feb 15–2100366
Feb 22–2800391
Mar 1–700551
Mar 8–1400523
Mar 15–2133750
Mar 22–28741,012
Mar 29 – Apr 4221,535
Apr 5–11421,960
Apr 12–18642,492
Apr 19–25332,403
Apr 26 – May 21463,783
May 3–9953,307
May 10–161252,059
May 17–23432,153
May 24–30332,390
May 31 – Jun 6112,648
Jun 7–13222,715
Jun 14–20412,695
Jun 21–27212,714
Jun 28 – Jul 4003,220
Jul 5–11002,980
Jul 12–18003,031
Jul 19–25002,961
Jul 26 – Aug 1002,795
Aug 2–8002,884
Aug 9–15112,696
Aug 16–22002,535
Aug 23–29002,536
Aug 30 – Sep 5002,606
Sep 6–12002,980
Sep 13–19002,959
Sep 20–26112,313
Sep 27 – Oct 3002,122
Oct 4–10111,828
Oct 11–17001,793
Oct 18–24001,338
Oct 25–31001,023
Nov 1–700676
Nov 8–1400593
Nov 15–2100384
Nov 22–2800496
Nov 29 – Dec 500356
Dec 6–1200478
Dec 13–1900285
Dec 20–2600322
Dec 27 – Jan 200388

In Ohio

Late March to early July, 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 2,589 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 845 dates. Latest record: November 2025.

Show as a table
Records of Tree Swallow in Ohio each week, and records of all species
WeekRecords of Tree SwallowYears recordedRecords of all species
Jan 4–10116,211
Jan 11–17115,146
Jan 18–24114,645
Jan 25–31114,698
Feb 1–7226,023
Feb 8–14115,888
Feb 15–21005,436
Feb 22–28226,846
Mar 1–7228,321
Mar 8–146410,384
Mar 15–2130912,620
Mar 22–28451013,949
Mar 29 – Apr 4811019,661
Apr 5–111451026,860
Apr 12–181531039,925
Apr 19–251561041,623
Apr 26 – May 22511056,391
May 3–92731052,952
May 10–164061053,785
May 17–232931057,698
May 24–301611054,651
May 31 – Jun 61321053,099
Jun 7–13841053,700
Jun 14–2079956,625
Jun 21–27801055,361
Jun 28 – Jul 467958,477
Jul 5–1133861,336
Jul 12–1821764,722
Jul 19–2518969,753
Jul 26 – Aug 19559,416
Aug 2–84459,712
Aug 9–156555,994
Aug 16–224354,328
Aug 23–295551,772
Aug 30 – Sep 59557,167
Sep 6–122259,075
Sep 13–191154,543
Sep 20–262245,860
Sep 27 – Oct 32243,180
Oct 4–108737,841
Oct 11–174330,824
Oct 18–244321,156
Oct 25–312119,021
Nov 1–71114,172
Nov 8–140012,621
Nov 15–21007,965
Nov 22–28118,136
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

  • Barn Swallow Hirundo rusticaOften confused in Ohio: 14 identifications in Ohio named one where the other was meant
  • Bank Swallow Riparia riparia207 identifications worldwide named one where the other was meant
  • Northern Rough-winged Swallow Stelgidopteryx serripennis190 identifications worldwide named one where the other was meant
  • Eastern Kingbird Tyrannus tyrannus115 identifications worldwide named one where the other was meant
  • Purple Martin Progne subis113 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.

When each is reported

  • All recordsUsually late March to early July, middle week early May · 2,589 records
  • Reported as maleUsually early April to early June, middle week early May · 20 records

Not every photo is marked with a sex or a sign, so these show when people reported each, not when it happens.

Months not reported

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

Not reported in Ohio in December, 2016 to 2025.

Land cover where it is recorded

Land coverIts recordsAll Ohio records
Farmland31%11%
Developed31%49%
Wetland18%5%
Open water9%3%
Forest7%31%
Grassland and shrub3%0.9%
Barren1%0.6%

From 838 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

2,589 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.