Season shown in 1 of Ohio's 88 counties. Explore Ohio
No result yet (41)
Recorded, too few records for a result (44)
Recorded, season not shown (2)
Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Swamp Darner by Ohio county: records and mapped range
County
Records
Adams County
No qualifying records yet
Allen County
Recorded, too few records for a result
Ashland County
No qualifying records yet
Ashtabula County
No qualifying records yet
Athens County
Recorded, too few records for a result
Auglaize County
No qualifying records yet
Belmont County
No qualifying records yet
Brown County
No qualifying records yet
Butler County
Recorded, too few records for a result
Carroll County
No qualifying records yet
Champaign County
Recorded, too few records for a result
Clark County
Recorded, too few records for a result
Clermont County
25 · Season shown
Clinton County
Recorded, too few records for a result
Columbiana County
No qualifying records yet
Coshocton County
Recorded, too few records for a result
Crawford County
Recorded, too few records for a result
Cuyahoga County
Recorded, too few records for a result
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
Recorded, too few records for a result
Erie County
Recorded, too few records for a result
Fairfield County
Recorded, too few records for a result
Fayette County
Recorded, too few records for a result
Franklin County
28 · Recorded, season not shown
Fulton County
No qualifying records yet
Gallia County
No qualifying records yet
Geauga County
Recorded, too few records for a result
Greene County
Recorded, too few records for a result
Guernsey County
No qualifying records yet
Hamilton County
Recorded, too few records for a result
Hancock County
Recorded, too few records for a result
Hardin County
No qualifying records yet
Harrison County
No qualifying records yet
Henry County
No qualifying records yet
Highland County
No qualifying records yet
Hocking County
No qualifying records yet
Holmes County
Recorded, too few records for a result
Huron County
Recorded, too few records for a result
Jackson County
No qualifying records yet
Jefferson County
No qualifying records yet
Knox County
No qualifying records yet
Lake County
Recorded, too few records for a result
Lawrence County
No qualifying records yet
Licking County
Recorded, too few records for a result
Logan County
No qualifying records yet
Lorain County
Recorded, too few records for a result
Lucas County
44 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
No qualifying records yet
Medina County
Recorded, too few records for a result
Meigs County
No qualifying records yet
Mercer County
No qualifying records yet
Miami County
No qualifying records yet
Monroe County
No qualifying records yet
Montgomery County
Recorded, too few records for a result
Morgan County
No qualifying records yet
Morrow County
No qualifying records yet
Muskingum County
No qualifying records yet
Noble County
No qualifying records yet
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
Recorded, too few records for a result
Pickaway County
Recorded, too few records for a result
Pike County
Recorded, too few records for a result
Portage County
Recorded, too few records for a result
Preble County
No qualifying records yet
Putnam County
No qualifying records yet
Richland County
Recorded, too few records for a result
Ross County
No qualifying records yet
Sandusky County
Recorded, too few records for a result
Scioto County
No qualifying records yet
Seneca County
Recorded, too few records for a result
Shelby County
Recorded, too few records for a result
Stark County
Recorded, too few records for a result
Summit County
Recorded, too few records for a result
Trumbull County
Recorded, too few records for a result
Tuscarawas County
No qualifying records yet
Union County
Recorded, too few records for a result
Van Wert County
No qualifying records yet
Vinton County
Recorded, too few records for a result
Warren County
Recorded, too few records for a result
Washington County
No qualifying records yet
Wayne County
Recorded, too few records for a result
Williams County
No qualifying records yet
Wood County
No qualifying records yet
Wyandot County
No qualifying records yet
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Clermont County
Mid-April to early June, middle week May 17–23
Middle week · May 17–23
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Clermont County · records of all species each week, 25,341 in all
Records per week from 25 records in 7 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 23 dates. Latest record: June 2025.
Show as a table
Records of Swamp Darner in Clermont County each week, and records of all species
Week
Records of Swamp Darner
Years recorded
Records of all species
Jan 4–10
0
0
44
Jan 11–17
0
0
36
Jan 18–24
0
0
40
Jan 25–31
0
0
86
Feb 1–7
0
0
49
Feb 8–14
0
0
75
Feb 15–21
0
0
68
Feb 22–28
0
0
92
Mar 1–7
0
0
134
Mar 8–14
0
0
161
Mar 15–21
0
0
261
Mar 22–28
0
0
268
Mar 29 – Apr 4
0
0
390
Apr 5–11
0
0
469
Apr 12–18
1
1
705
Apr 19–25
2
1
753
Apr 26 – May 2
2
1
745
May 3–9
3
2
760
May 10–16
2
2
589
May 17–23
4
3
898
May 24–30
3
1
1,116
May 31 – Jun 6
5
3
977
Jun 7–13
2
2
942
Jun 14–20
0
0
920
Jun 21–27
0
0
793
Jun 28 – Jul 4
0
0
900
Jul 5–11
1
1
921
Jul 12–18
0
0
886
Jul 19–25
0
0
1,229
Jul 26 – Aug 1
0
0
813
Aug 2–8
0
0
1,003
Aug 9–15
0
0
850
Aug 16–22
0
0
880
Aug 23–29
0
0
817
Aug 30 – Sep 5
0
0
846
Sep 6–12
0
0
830
Sep 13–19
0
0
642
Sep 20–26
0
0
529
Sep 27 – Oct 3
0
0
494
Oct 4–10
0
0
400
Oct 11–17
0
0
395
Oct 18–24
0
0
254
Oct 25–31
0
0
349
Nov 1–7
0
0
167
Nov 8–14
0
0
170
Nov 15–21
0
0
132
Nov 22–28
0
0
115
Nov 29 – Dec 5
0
0
95
Dec 6–12
0
0
55
Dec 13–19
0
0
60
Dec 20–26
0
0
59
Dec 27 – Jan 2
0
0
79
Reported as an adult
Only 2 records here are marked as adults, too few to show a adult season. One needs at least 20 records from 5 different years.
Reported as a larva
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
In Ohio
Mid-April to late July, middle week May 31 – Jun 6
Middle week · May 31 – Jun 6
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all
Records per week from 479 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 277 dates. Latest record: August 2025.
Show as a table
Records of Swamp Darner in Ohio each week, and records of all species
Week
Records of Swamp Darner
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
0
0
4,645
Jan 25–31
0
0
4,698
Feb 1–7
0
0
6,023
Feb 8–14
0
0
5,888
Feb 15–21
1
1
5,436
Feb 22–28
0
0
6,846
Mar 1–7
0
0
8,321
Mar 8–14
0
0
10,384
Mar 15–21
2
2
12,620
Mar 22–28
0
0
13,949
Mar 29 – Apr 4
0
0
19,661
Apr 5–11
1
1
26,860
Apr 12–18
5
3
39,925
Apr 19–25
21
2
41,623
Apr 26 – May 2
17
5
56,391
May 3–9
45
7
52,952
May 10–16
10
5
53,785
May 17–23
26
9
57,698
May 24–30
63
9
54,651
May 31 – Jun 6
50
9
53,099
Jun 7–13
62
9
53,700
Jun 14–20
51
9
56,625
Jun 21–27
33
9
55,361
Jun 28 – Jul 4
21
9
58,477
Jul 5–11
19
8
61,336
Jul 12–18
19
8
64,722
Jul 19–25
7
5
69,753
Jul 26 – Aug 1
10
4
59,416
Aug 2–8
5
3
59,712
Aug 9–15
4
4
55,994
Aug 16–22
3
3
54,328
Aug 23–29
3
2
51,772
Aug 30 – Sep 5
1
1
57,167
Sep 6–12
0
0
59,075
Sep 13–19
0
0
54,543
Sep 20–26
0
0
45,860
Sep 27 – Oct 3
0
0
43,180
Oct 4–10
0
0
37,841
Oct 11–17
0
0
30,824
Oct 18–24
0
0
21,156
Oct 25–31
0
0
19,021
Nov 1–7
0
0
14,172
Nov 8–14
0
0
12,621
Nov 15–21
0
0
7,965
Nov 22–28
0
0
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
Reported as an adult
Usually reported as an adult early May to mid-July, middle week May 31 – Jun 6.
From 71 records that are marked as adults. Not every photo is marked with a life stage, so this shows when people reported it as an adult, not when adults are about.
Reported as a larva
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
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
Telling it apart
From what Ohio’s records show. Only what the records support is shown.
Shadow DarnerAeshna umbrosa53 identifications worldwide named one where the other was meant
Cyrano DarnerNasiaeschna pentacantha36 identifications worldwide named one where the other was meant
Common Green DarnerAnax junius30 identifications worldwide named one where the other was meant
Blue DasherPachydiplax longipennis10 identifications worldwide named one where the other was meant
Fawn DarnerBoyeria vinosa10 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: no record
Feb: recorded
Mar: recorded
Apr: recorded
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: no record
Oct: no record
Nov: no record
Dec: no record
Not reported in Ohio in September to January, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Forest
37%31%
Developed
33%49%
Wetland
23%5%
Farmland
6%11%
Barren
1%0.6%
Open water
0.6%3%
From 167 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
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.
