BirdsIn Ohio
Great Black-backed Gull
Larus marinus Linnaeus, 1758
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Charadriiformes
- Family
- Laridae
- Genus
- Larus
Range
Where it is recorded
Season shown in 1 of Ohio's 88 counties. Its mapped range covers 16. Explore Ohio
- No result yet (69)
- Within its mapped range (8)
- Recorded, too few records for a result (9)
- Recorded, season not shown (1)
- Season shown (1)
Counties as a table
| County | Records | In mapped range |
|---|---|---|
| Adams County | No qualifying records yet | No |
| Allen County | No qualifying records yet | No |
| Ashland County | No qualifying records yet | No |
| Ashtabula County | No qualifying records yet | Yes: winter |
| Athens County | No qualifying records yet | No |
| Auglaize County | Recorded, too few records for a result | No |
| Belmont County | No qualifying records yet | No |
| Brown County | No qualifying records yet | No |
| Butler County | No qualifying records yet | No |
| Carroll County | No qualifying records yet | No |
| Champaign County | No qualifying records yet | No |
| Clark County | No qualifying records yet | No |
| Clermont County | No qualifying records yet | No |
| Clinton County | No qualifying records yet | No |
| Columbiana County | No qualifying records yet | No |
| Coshocton County | No qualifying records yet | No |
| Crawford County | No qualifying records yet | No |
| Cuyahoga County | 65 · Season shown | Yes: winter |
| Darke County | No qualifying records yet | No |
| Defiance County | No qualifying records yet | No |
| Delaware County | No qualifying records yet | No |
| Erie County | Recorded, too few records for a result | Yes: winter |
| Fairfield County | No qualifying records yet | No |
| Fayette County | No qualifying records yet | No |
| Franklin County | No qualifying records yet | No |
| Fulton County | No qualifying records yet | No |
| Gallia County | No qualifying records yet | No |
| Geauga County | Recorded, too few records for a result | Yes: winter |
| Greene County | No qualifying records yet | No |
| Guernsey County | No qualifying records yet | No |
| Hamilton County | No qualifying records yet | No |
| Hancock County | No qualifying records yet | No |
| Hardin County | No qualifying records yet | No |
| Harrison County | No qualifying records yet | No |
| Henry County | No qualifying records yet | No |
| Highland County | No qualifying records yet | No |
| Hocking County | No qualifying records yet | No |
| Holmes County | No qualifying records yet | No |
| Huron County | No qualifying records yet | Yes: winter |
| Jackson County | No qualifying records yet | No |
| Jefferson County | No qualifying records yet | No |
| Knox County | No qualifying records yet | No |
| Lake County | Recorded, too few records for a result | Yes: winter |
| Lawrence County | No qualifying records yet | No |
| Licking County | No qualifying records yet | No |
| Logan County | No qualifying records yet | No |
| Lorain County | 21 · Recorded, season not shown | Yes: winter |
| Lucas County | Recorded, too few records for a result | Yes: winter |
| Madison County | No qualifying records yet | No |
| Mahoning County | No qualifying records yet | No |
| Marion County | No qualifying records yet | No |
| Medina County | No qualifying records yet | Yes: winter |
| Meigs County | No qualifying records yet | No |
| Mercer County | No qualifying records yet | No |
| Miami County | No qualifying records yet | No |
| Monroe County | No qualifying records yet | No |
| Montgomery County | Recorded, too few records for a result | No |
| Morgan County | No qualifying records yet | No |
| Morrow County | No qualifying records yet | No |
| Muskingum County | No qualifying records yet | No |
| Noble County | No qualifying records yet | No |
| Ottawa County | Recorded, too few records for a result | Yes: winter |
| Paulding County | No qualifying records yet | No |
| Perry County | No qualifying records yet | No |
| Pickaway County | No qualifying records yet | No |
| Pike County | No qualifying records yet | No |
| Portage County | No qualifying records yet | Yes: winter |
| Preble County | No qualifying records yet | No |
| Putnam County | No qualifying records yet | No |
| Richland County | No qualifying records yet | No |
| Ross County | No qualifying records yet | No |
| Sandusky County | No qualifying records yet | Yes: winter |
| Scioto County | No qualifying records yet | No |
| Seneca County | No qualifying records yet | Yes: winter |
| Shelby County | No qualifying records yet | No |
| Stark County | Recorded, too few records for a result | No |
| Summit County | Recorded, too few records for a result | Yes: winter |
| Trumbull County | No qualifying records yet | Yes: winter |
| Tuscarawas County | No qualifying records yet | No |
| Union County | No qualifying records yet | No |
| Van Wert County | No qualifying records yet | No |
| Vinton County | No qualifying records yet | No |
| Warren County | No qualifying records yet | No |
| Washington County | No qualifying records yet | No |
| Wayne County | No qualifying records yet | No |
| Williams County | No qualifying records yet | No |
| Wood County | No qualifying records yet | Yes: winter |
| Wyandot County | No qualifying records yet | No |
Season
When it is recorded
In Ohio
Early September to mid-April, middle week Jan 4–10
Middle week · Jan 4–10
This week · Nov 8–14
Show over the bars
Records per week from 179 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 152 dates. Latest record: December 2025.
Show as a table
| Week | Records of Great Black-backed Gull | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 14 | 7 | 6,211 |
| Jan 11–17 | 7 | 5 | 5,146 |
| Jan 18–24 | 6 | 4 | 4,645 |
| Jan 25–31 | 7 | 6 | 4,698 |
| Feb 1–7 | 11 | 6 | 6,023 |
| Feb 8–14 | 7 | 5 | 5,888 |
| Feb 15–21 | 6 | 3 | 5,436 |
| Feb 22–28 | 8 | 4 | 6,846 |
| Mar 1–7 | 2 | 1 | 8,321 |
| Mar 8–14 | 6 | 4 | 10,384 |
| Mar 15–21 | 3 | 3 | 12,620 |
| Mar 22–28 | 2 | 2 | 13,949 |
| Mar 29 – Apr 4 | 4 | 3 | 19,661 |
| Apr 5–11 | 4 | 4 | 26,860 |
| Apr 12–18 | 1 | 1 | 39,925 |
| Apr 19–25 | 0 | 0 | 41,623 |
| Apr 26 – May 2 | 3 | 3 | 56,391 |
| May 3–9 | 2 | 2 | 52,952 |
| May 10–16 | 2 | 2 | 53,785 |
| May 17–23 | 1 | 1 | 57,698 |
| May 24–30 | 0 | 0 | 54,651 |
| May 31 – Jun 6 | 1 | 1 | 53,099 |
| Jun 7–13 | 0 | 0 | 53,700 |
| Jun 14–20 | 0 | 0 | 56,625 |
| Jun 21–27 | 0 | 0 | 55,361 |
| Jun 28 – Jul 4 | 0 | 0 | 58,477 |
| Jul 5–11 | 0 | 0 | 61,336 |
| Jul 12–18 | 2 | 1 | 64,722 |
| Jul 19–25 | 0 | 0 | 69,753 |
| Jul 26 – Aug 1 | 1 | 1 | 59,416 |
| Aug 2–8 | 1 | 1 | 59,712 |
| Aug 9–15 | 0 | 0 | 55,994 |
| Aug 16–22 | 2 | 1 | 54,328 |
| Aug 23–29 | 2 | 2 | 51,772 |
| Aug 30 – Sep 5 | 0 | 0 | 57,167 |
| Sep 6–12 | 8 | 5 | 59,075 |
| Sep 13–19 | 4 | 4 | 54,543 |
| Sep 20–26 | 3 | 3 | 45,860 |
| Sep 27 – Oct 3 | 2 | 2 | 43,180 |
| Oct 4–10 | 1 | 1 | 37,841 |
| Oct 11–17 | 3 | 2 | 30,824 |
| Oct 18–24 | 0 | 0 | 21,156 |
| Oct 25–31 | 1 | 1 | 19,021 |
| Nov 1–7 | 2 | 1 | 14,172 |
| Nov 8–14 | 2 | 2 | 12,621 |
| Nov 15–21 | 1 | 1 | 7,965 |
| Nov 22–28 | 0 | 0 | 8,136 |
| Nov 29 – Dec 5 | 9 | 3 | 6,083 |
| Dec 6–12 | 1 | 1 | 6,004 |
| Dec 13–19 | 8 | 5 | 5,423 |
| Dec 20–26 | 13 | 7 | 5,661 |
| Dec 27 – Jan 2 | 16 | 6 | 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.
Relatives
In the same genus
Other Larus recorded in Ohio
Identification
How to identify it
Look-alikes
When
Land cover
Often confused with
- Lesser Black-backed Gull Larus fuscus798 identifications worldwide named one where the other was meant
- American Herring Gull Larus smithsonianus414 identifications worldwide named one where the other was meant
- Ring-billed Gull Larus delawarensis69 identifications worldwide named one where the other was meant
- Laughing Gull Leucophaeus atricilla32 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
- Jan: recorded
- Feb: recorded
- Mar: recorded
- Apr: recorded
- May: recorded
- Jun: no record
- Jul: recorded
- Aug: recorded
- Sep: recorded
- Oct: recorded
- Nov: recorded
- Dec: recorded
Not reported in Ohio in June, 2016 to 2025.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Open water | 57%3% |
| Developed | 36%49% |
| Barren | 4%0.6% |
| Farmland | 1%11% |
| Wetland | 1%5% |
From 70 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
179 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 178 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 · 1 recordiNaturalist. 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.