WhenToBird

Thryothorus ludovicianus · Troglodytidae

When Do Carolina Wrens Arrive in Missouri?

Adult Carolina Wren
Photo: northerly, CC BY 4.0 via iNaturalist

The Carolina Wren is in Missouri all year. It turns up on about 46% of checklists at its peak (mid September) and on 31% in its quietest week (late February).

When to look

PresentAll year
Peak weekSep 15-21mid September
Quietest weekFeb 22-28late February

Best: mid September. Here all year. Peak: on about 46% of Missouri checklists.

  1. Jancommon
  2. Febcommon
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Augpeak season
  9. Seppeak season
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

Darker months: more checklists report it. Outlined: peak month.

0%20%40%60%Jan 1-7: 31% of 12628 checklistsJan 8-14: 33% of 9076 checklistsJan 15-21: 31% of 8790 checklistsJan 22-31: 31% of 11986 checklistsFeb 1-7: 34% of 8987 checklistsFeb 8-14: 34% of 10394 checklistsFeb 15-21: 30% of 15472 checklistsFeb 22-28: 31% of 9917 checklistsMar 1-7: 31% of 9877 checklistsMar 8-14: 32% of 9570 checklistsMar 15-21: 31% of 10274 checklistsMar 22-31: 36% of 16156 checklistsApr 1-7: 36% of 12774 checklistsApr 8-14: 40% of 14048 checklistsApr 15-21: 40% of 14894 checklistsApr 22-30: 40% of 23288 checklistsMay 1-7: 38% of 22645 checklistsMay 8-14: 36% of 21384 checklistsMay 15-21: 38% of 13989 checklistsMay 22-31: 36% of 15784 checklistsJun 1-7: 37% of 9691 checklistsJun 8-14: 38% of 9036 checklistsJun 15-21: 38% of 7907 checklistsJun 22-30: 39% of 9831 checklistsJul 1-7: 42% of 8008 checklistsJul 8-14: 42% of 7202 checklistsJul 15-21: 41% of 7151 checklistsJul 22-31: 40% of 9833 checklistsAug 1-7: 41% of 7639 checklistsAug 8-14: 40% of 7507 checklistsAug 15-21: 40% of 7429 checklistsAug 22-31: 41% of 11182 checklistsSep 1-7: 44% of 9471 checklistsSep 8-14: 46% of 8501 checklistsSep 15-21: 46% of 8169 checklistsSep 22-30: 45% of 11572 checklistsOct 1-7: 43% of 9028 checklistsOct 8-14: 41% of 9413 checklistsOct 15-21: 38% of 8656 checklistsOct 22-31: 36% of 11625 checklistsNov 1-7: 37% of 8627 checklistsNov 8-14: 36% of 8284 checklistsNov 15-21: 35% of 8075 checklistsNov 22-30: 34% of 10430 checklistsDec 1-7: 33% of 7870 checklistsDec 8-14: 35% of 7567 checklistsDec 15-21: 35% of 9696 checklistsDec 22-31: 36% of 13142 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Frequency is the share of complete checklists in Missouri that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

JanFebMarAprMayJunJulAugSepOctNovDec
today
Second week of November

Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.

Embed this map on your site

Where in Missouri

Best counties

Share of checklists at the peak
  1. Ripley CountyBest late October · 31 checklists that week, 1,058 in all93%
  2. Oregon CountyBest early September · 17 checklists that week, 1,145 in all88%
  3. Webster CountyBest mid November · 12 checklists that week, 750 in all77%
  4. Cape Girardeau CountyBest early August · 200 checklists that week, 12,037 in all74%
  5. Phelps CountyBest late August · 210 checklists that week, 10,092 in all71%
  6. McDonald CountyBest late April · 24 checklists that week, 336 in all71%

Best spots

Share of checklists at the peak
  1. Line Creek GreenwayPlatte County, best late July · 22 checklists that week, 588 in all98%
  2. John J. Audubon Regional Nature and Artist CenterPhelps County, best late August · 44 checklists that week, 1,077 in all94%
  3. 3M Flat Branch-Hinkson Creek WetlandsBoone County, best mid September · 42 checklists that week, 2,233 in all94%
  4. Montauk Fish Hatchery/Trout ParkDent County, best late April · 21 checklists that week, 195 in all92%
  5. Castlewood State ParkSt. Louis County, best mid February · 22 checklists that week, 994 in all91%

Busy spots report more of everything; compare the checklist counts before you drive anywhere.

Best time of day

In Missouri, the Carolina Wren is most often listed on checklists started between 6 and 8 am (52% of those checklists).

0%20%40%60%12 am: too few checklists (205) to judge1 am: too few checklists (179) to judge2 am: too few checklists (204) to judge3 am: too few checklists (216) to judge4 am: too few checklists (630) to judge5 am: too few checklists (5072) to judge6 am: 57% of 27231 checklists7 am: 50% of 64162 checklists8 am: 44% of 67854 checklists9 am: 40% of 56515 checklists10 am: 36% of 47496 checklists11 am: 33% of 38845 checklists12 pm: 31% of 33383 checklists1 pm: 29% of 32503 checklists2 pm: 29% of 32615 checklists3 pm: 27% of 32514 checklists4 pm: 27% of 30274 checklists5 pm: 28% of 23446 checklists6 pm: 29% of 16374 checklists7 pm: too few checklists (10236) to judge8 pm: too few checklists (3133) to judge9 pm: too few checklists (722) to judge10 pm: too few checklists (405) to judge11 pm: too few checklists (261) to judge12a3a6a9a12p3p6p9p
Share of checklists started in each local hour that reported it. It reflects when people go birding as well as when birds are active. Grey hours have too few checklists (under 2% of the state’s, or under 200) to judge.
Week-by-week table
MonthDays 1-78-1415-2122-end
January31%33%31%31%
February34%34%30%31%
March31%32%31%36%
April36%40%40%40%
May38%36%38%36%
June37%38%38%39%
July42%42%41%40%
August41%40%40%41%
September44%46%46%45%
October43%41%38%36%
November37%36%35%34%
December33%35%35%36%

Neighboring states

  • Arkansas: year-round, peaks mid September
  • Iowa: all year, most in summer, peaks early September
  • Kansas: year-round, peaks the second week of July
  • Illinois: year-round, peaks the second week of September

Common questions

When do Carolina Wrens arrive in Missouri?
The Carolina Wren is in Missouri all year. It turns up on about 46% of checklists at its peak (mid September) and on 31% in its quietest week (late February).
When do Carolina Wrens leave Missouri?
The Carolina Wren does not leave Missouri: it is reported all year, from 31% of checklists in late February to 46% in mid September.
When is the best time to see a Carolina Wren in Missouri?
The Carolina Wren is reported most often in mid September, on about 46% of Missouri checklists.
Where in Missouri are Carolina Wrens seen most often?
By county, Ripley County, Oregon County, and Webster County have the highest peak reporting rates for the Carolina Wren (counties with at least 200 checklists).