
Tree Swallow
Tachycineta bicolor (Vieillot, 1808)
Tree Swallow in all of Ohio- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Passeriformes
- Family
- Hirundinidae
- Genus
- Tachycineta
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)
Counties as a table
| County | Records | In mapped range |
|---|---|---|
| Adams County | Recorded, too few records for a result | Yes: summer |
| Allen County | Recorded, too few records for a result | Yes: summer |
| Ashland County | Recorded, too few records for a result | Yes: summer |
| Ashtabula County | Recorded, too few records for a result | Yes: summer |
| Athens County | 74 · Season shown | Yes: summer |
| Auglaize County | Recorded, too few records for a result | Yes: summer |
| Belmont County | Recorded, too few records for a result | Yes: summer |
| Brown County | Recorded, too few records for a result | Yes: summer |
| Butler County | Recorded, too few records for a result | Yes: summer |
| Carroll County | No qualifying records yet | Yes: summer |
| Champaign County | Recorded, too few records for a result | Yes: summer |
| Clark County | Recorded, too few records for a result | Yes: summer |
| Clermont County | 24 · Season shown | Yes: summer |
| Clinton County | Recorded, too few records for a result | Yes: summer |
| Columbiana County | Recorded, too few records for a result | Yes: summer |
| Coshocton County | No qualifying records yet | Yes: summer |
| Crawford County | Recorded, too few records for a result | Yes: summer |
| Cuyahoga County | 48 · Season shown | Yes: summer |
| Darke County | Recorded, too few records for a result | Yes: summer |
| Defiance County | No qualifying records yet | Yes: summer |
| Delaware County | 30 · Recorded, season not shown | Yes: summer |
| Erie County | 49 · Recorded, season not shown | Yes: summer |
| Fairfield County | Recorded, too few records for a result | Yes: summer |
| Fayette County | Recorded, too few records for a result | Yes: summer |
| Franklin County | 106 · Season shown | Yes: summer |
| Fulton County | Recorded, too few records for a result | Yes: summer |
| Gallia County | Recorded, too few records for a result | Yes: summer |
| Geauga County | 47 · Season shown | Yes: summer |
| Greene County | 37 · Season shown | Yes: summer |
| Guernsey County | No qualifying records yet | Yes: summer |
| Hamilton County | 79 · Recorded, season not shown | Yes: summer |
| Hancock County | Recorded, too few records for a result | Yes: summer |
| Hardin County | Recorded, too few records for a result | Yes: summer |
| Harrison County | Recorded, too few records for a result | Yes: summer |
| Henry County | Recorded, too few records for a result | Yes: summer |
| Highland County | Recorded, too few records for a result | Yes: summer |
| Hocking County | Recorded, too few records for a result | Yes: summer |
| Holmes County | Recorded, too few records for a result | Yes: summer |
| Huron County | No qualifying records yet | Yes: summer |
| Jackson County | Recorded, too few records for a result | Yes: summer |
| Jefferson County | Recorded, too few records for a result | Yes: summer |
| Knox County | Recorded, too few records for a result | Yes: summer |
| Lake County | 34 · Season shown | Yes: summer |
| Lawrence County | Recorded, too few records for a result | Yes: summer |
| Licking County | Recorded, too few records for a result | Yes: summer |
| Logan County | Recorded, too few records for a result | Yes: summer |
| Lorain County | 136 · Season shown | Yes: summer |
| Lucas County | 213 · Season shown | Yes: summer |
| Madison County | Recorded, too few records for a result | Yes: summer |
| Mahoning County | Recorded, too few records for a result | Yes: summer |
| Marion County | Recorded, too few records for a result | Yes: summer |
| Medina County | 44 · Recorded, season not shown | Yes: summer |
| Meigs County | No qualifying records yet | Yes: summer |
| Mercer County | Recorded, too few records for a result | Yes: summer |
| Miami County | Recorded, too few records for a result | Yes: summer |
| Monroe County | No qualifying records yet | Yes: summer |
| Montgomery County | Recorded, too few records for a result | Yes: summer |
| Morgan County | Recorded, too few records for a result | Yes: summer |
| Morrow County | Recorded, too few records for a result | Yes: summer |
| Muskingum County | Recorded, too few records for a result | Yes: summer |
| Noble County | No qualifying records yet | Yes: summer |
| Ottawa County | 68 · Recorded, season not shown | Yes: summer |
| Paulding County | Recorded, too few records for a result | Yes: summer |
| Perry County | No qualifying records yet | Yes: summer |
| Pickaway County | Recorded, too few records for a result | Yes: summer |
| Pike County | Recorded, too few records for a result | Yes: summer |
| Portage County | Recorded, too few records for a result | Yes: summer |
| Preble County | Recorded, too few records for a result | Yes: summer |
| Putnam County | No qualifying records yet | Yes: summer |
| Richland County | Recorded, too few records for a result | Yes: summer |
| Ross County | Recorded, too few records for a result | Yes: summer |
| Sandusky County | Recorded, too few records for a result | Yes: summer |
| Scioto County | Recorded, too few records for a result | Yes: summer |
| Seneca County | No qualifying records yet | Yes: summer |
| Shelby County | Recorded, too few records for a result | Yes: summer |
| Stark County | 48 · Recorded, season not shown | Yes: summer |
| Summit County | 328 · Season shown | Yes: summer |
| Trumbull County | Recorded, too few records for a result | Yes: summer |
| Tuscarawas County | Recorded, too few records for a result | Yes: summer |
| Union County | Recorded, too few records for a result | Yes: summer |
| Van Wert County | No qualifying records yet | Yes: summer |
| Vinton County | Recorded, too few records for a result | Yes: summer |
| Warren County | 30 · Recorded, season not shown | Yes: summer |
| Washington County | Recorded, too few records for a result | Yes: summer |
| Wayne County | 29 · Recorded, season not shown | Yes: summer |
| Williams County | Recorded, too few records for a result | Yes: summer |
| Wood County | Recorded, too few records for a result | Yes: summer |
| Wyandot County | Recorded, too few records for a result | Yes: summer |
Season
When it is recorded
In Lorain County
Late March to early July, middle week May 10–16
Records per week from 136 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 95 dates. Latest record: July 2025.
Show as a table
| Week | Records of Tree Swallow | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 0 | 0 | 193 |
| Jan 11–17 | 0 | 0 | 115 |
| Jan 18–24 | 0 | 0 | 75 |
| Jan 25–31 | 0 | 0 | 59 |
| Feb 1–7 | 0 | 0 | 101 |
| Feb 8–14 | 0 | 0 | 99 |
| Feb 15–21 | 0 | 0 | 84 |
| Feb 22–28 | 0 | 0 | 49 |
| Mar 1–7 | 0 | 0 | 114 |
| Mar 8–14 | 0 | 0 | 103 |
| Mar 15–21 | 4 | 3 | 258 |
| Mar 22–28 | 0 | 0 | 139 |
| Mar 29 – Apr 4 | 6 | 4 | 228 |
| Apr 5–11 | 6 | 4 | 376 |
| Apr 12–18 | 3 | 2 | 561 |
| Apr 19–25 | 6 | 5 | 560 |
| Apr 26 – May 2 | 19 | 6 | 1,122 |
| May 3–9 | 14 | 7 | 824 |
| May 10–16 | 16 | 7 | 793 |
| May 17–23 | 14 | 5 | 901 |
| May 24–30 | 13 | 3 | 886 |
| May 31 – Jun 6 | 8 | 5 | 771 |
| Jun 7–13 | 3 | 3 | 797 |
| Jun 14–20 | 5 | 4 | 1,124 |
| Jun 21–27 | 1 | 1 | 954 |
| Jun 28 – Jul 4 | 8 | 2 | 770 |
| Jul 5–11 | 5 | 2 | 973 |
| Jul 12–18 | 1 | 1 | 957 |
| Jul 19–25 | 2 | 2 | 1,240 |
| Jul 26 – Aug 1 | 1 | 1 | 912 |
| Aug 2–8 | 0 | 0 | 907 |
| Aug 9–15 | 1 | 1 | 769 |
| Aug 16–22 | 0 | 0 | 768 |
| Aug 23–29 | 0 | 0 | 788 |
| Aug 30 – Sep 5 | 0 | 0 | 959 |
| Sep 6–12 | 0 | 0 | 907 |
| Sep 13–19 | 0 | 0 | 817 |
| Sep 20–26 | 0 | 0 | 745 |
| Sep 27 – Oct 3 | 0 | 0 | 508 |
| Oct 4–10 | 0 | 0 | 597 |
| Oct 11–17 | 0 | 0 | 343 |
| Oct 18–24 | 0 | 0 | 426 |
| Oct 25–31 | 0 | 0 | 297 |
| Nov 1–7 | 0 | 0 | 278 |
| Nov 8–14 | 0 | 0 | 210 |
| Nov 15–21 | 0 | 0 | 121 |
| Nov 22–28 | 0 | 0 | 100 |
| Nov 29 – Dec 5 | 0 | 0 | 118 |
| Dec 6–12 | 0 | 0 | 60 |
| Dec 13–19 | 0 | 0 | 224 |
| Dec 20–26 | 0 | 0 | 187 |
| Dec 27 – Jan 2 | 0 | 0 | 208 |
In Ohio
Late March to early July, middle week May 10–16
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
| Week | Records of Tree Swallow | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 1 | 1 | 6,211 |
| Jan 11–17 | 1 | 1 | 5,146 |
| Jan 18–24 | 1 | 1 | 4,645 |
| Jan 25–31 | 1 | 1 | 4,698 |
| Feb 1–7 | 2 | 2 | 6,023 |
| Feb 8–14 | 1 | 1 | 5,888 |
| Feb 15–21 | 0 | 0 | 5,436 |
| Feb 22–28 | 2 | 2 | 6,846 |
| Mar 1–7 | 2 | 2 | 8,321 |
| Mar 8–14 | 6 | 4 | 10,384 |
| Mar 15–21 | 30 | 9 | 12,620 |
| Mar 22–28 | 45 | 10 | 13,949 |
| Mar 29 – Apr 4 | 81 | 10 | 19,661 |
| Apr 5–11 | 145 | 10 | 26,860 |
| Apr 12–18 | 153 | 10 | 39,925 |
| Apr 19–25 | 156 | 10 | 41,623 |
| Apr 26 – May 2 | 251 | 10 | 56,391 |
| May 3–9 | 273 | 10 | 52,952 |
| May 10–16 | 406 | 10 | 53,785 |
| May 17–23 | 293 | 10 | 57,698 |
| May 24–30 | 161 | 10 | 54,651 |
| May 31 – Jun 6 | 132 | 10 | 53,099 |
| Jun 7–13 | 84 | 10 | 53,700 |
| Jun 14–20 | 79 | 9 | 56,625 |
| Jun 21–27 | 80 | 10 | 55,361 |
| Jun 28 – Jul 4 | 67 | 9 | 58,477 |
| Jul 5–11 | 33 | 8 | 61,336 |
| Jul 12–18 | 21 | 7 | 64,722 |
| Jul 19–25 | 18 | 9 | 69,753 |
| Jul 26 – Aug 1 | 9 | 5 | 59,416 |
| Aug 2–8 | 4 | 4 | 59,712 |
| Aug 9–15 | 6 | 5 | 55,994 |
| Aug 16–22 | 4 | 3 | 54,328 |
| Aug 23–29 | 5 | 5 | 51,772 |
| Aug 30 – Sep 5 | 9 | 5 | 57,167 |
| Sep 6–12 | 2 | 2 | 59,075 |
| Sep 13–19 | 1 | 1 | 54,543 |
| Sep 20–26 | 2 | 2 | 45,860 |
| Sep 27 – Oct 3 | 2 | 2 | 43,180 |
| Oct 4–10 | 8 | 7 | 37,841 |
| Oct 11–17 | 4 | 3 | 30,824 |
| Oct 18–24 | 4 | 3 | 21,156 |
| Oct 25–31 | 2 | 1 | 19,021 |
| Nov 1–7 | 1 | 1 | 14,172 |
| Nov 8–14 | 0 | 0 | 12,621 |
| Nov 15–21 | 0 | 0 | 7,965 |
| Nov 22–28 | 1 | 1 | 8,136 |
| Nov 29 – Dec 5 | 0 | 0 | 6,083 |
| Dec 6–12 | 0 | 0 | 6,004 |
| Dec 13–19 | 0 | 0 | 5,423 |
| Dec 20–26 | 0 | 0 | 5,661 |
| Dec 27 – Jan 2 | 0 | 0 | 8,459 |
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
- Jan: recorded
- Feb: recorded
- Mar: recorded
- Apr: recorded
- May: recorded
- Jun: recorded
- Jul: recorded
- Aug: recorded
- Sep: recorded
- Oct: recorded
- Nov: recorded
- Dec: no record
Not reported in Ohio in December, 2016 to 2025.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Farmland | 31%11% |
| Developed | 31%49% |
| Wetland | 18%5% |
| Open water | 9%3% |
| Forest | 7%31% |
| Grassland and shrub | 3%0.9% |
| Barren | 1%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 Lorain County result
136 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 133 recordsiNaturalist contributors, iNaturalist (2026). iNaturalist Research-grade Observations. iNaturalist.org. Occurrence dataset https://doi.org/10.15468/ab3s5x accessed via GBIF.org on 2026-11-13.
- iNaturalist observations (opens in a new tab) · iNaturalist.org · 3 recordsiNaturalist. Available from https://www.inaturalist.org. Accessed 2026-11-13
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.