WhenToBird

Leucophaeus pipixcan · Laridae

When Do Franklin's Gulls Arrive in Missouri?

Adult Franklin's Gull
Photo: Dani Alba, CC BY 4.0 via iNaturalist

Franklin's Gulls mostly pass through Missouri: the first show up in mid September, they are common by late September, peak in mid October (3.7% of checklists), and most are gone by the second week of November.

When to look

First arrivalsSep 15-21mid September
Common bySep 22-30late September
PeakOct 15-21mid October
Most gone byNov 8-14the second week of November

Best: mid October. First arrivals mid September; most are gone by the second week of November. Peak: on about 3.7% of Missouri checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marrare
  4. Apruncommon
  5. Mayrare
  6. Junrare
  7. Julnot usually seen
  8. Augrare
  9. Sepcommon
  10. Octpeak season
  11. Novpeak season
  12. Decrare

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

0%2%4%6%Jan 1-7: 0.1% of 12628 checklistsJan 8-14: 0.1% of 9076 checklistsJan 15-21: 0.1% of 8790 checklistsJan 22-31: 0.1% of 11986 checklistsFeb 1-7: 0% of 8987 checklistsFeb 8-14: 0.1% of 10394 checklistsFeb 15-21: 0.1% of 15472 checklistsFeb 22-28: 0.1% of 9917 checklistsMar 1-7: 0.1% of 9877 checklistsMar 8-14: 0.1% of 9570 checklistsMar 15-21: 0.1% of 10274 checklistsMar 22-31: 0.1% of 16156 checklistsApr 1-7: 0.2% of 12774 checklistsApr 8-14: 0.5% of 14048 checklistsApr 15-21: 0.6% of 14894 checklistsApr 22-30: 0.5% of 23288 checklistsMay 1-7: 0.6% of 22645 checklistsMay 8-14: 0.3% of 21384 checklistsMay 15-21: 0.6% of 13989 checklistsMay 22-31: 0.3% of 15784 checklistsJun 1-7: 0.1% of 9691 checklistsJun 8-14: 0.1% of 9036 checklistsJun 15-21: 0% of 7907 checklistsJun 22-30: 0.1% of 9831 checklistsJul 1-7: 0.1% of 8008 checklistsJul 8-14: 0.1% of 7202 checklistsJul 15-21: 0.1% of 7151 checklistsJul 22-31: 0.2% of 9833 checklistsAug 1-7: 0.1% of 7639 checklistsAug 8-14: 0.2% of 7507 checklistsAug 15-21: 0.1% of 7429 checklistsAug 22-31: 0.2% of 11182 checklistsSep 1-7: 0.3% of 9471 checklistsSep 8-14: 0.3% of 8501 checklistsSep 15-21: 0.7% of 8169 checklistsSep 22-30: 1.8% of 11572 checklistsOct 1-7: 2.7% of 9028 checklistsOct 8-14: 3.5% of 9413 checklistsOct 15-21: 3.5% of 8656 checklistsOct 22-31: 4.1% of 11625 checklistsNov 1-7: 3.2% of 8627 checklistsNov 8-14: 1.8% of 8284 checklistsNov 15-21: 0.9% of 8075 checklistsNov 22-30: 0.5% of 10430 checklistsDec 1-7: 0.1% of 7870 checklistsDec 8-14: 0.1% of 7567 checklistsDec 15-21: 0.1% of 9696 checklistsDec 22-31: 0% 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.

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Where in Missouri

Best counties

Share of checklists at the peak
  1. Monroe CountyBest mid October · 38 checklists that week, 1,048 in all42%
  2. Macon CountyBest the second week of October · 38 checklists that week, 1,377 in all39%
  3. Clay CountyBest mid October · 269 checklists that week, 14,361 in all39%
  4. Polk CountyBest the second week of November · 18 checklists that week, 1,429 in all37%
  5. Henry CountyBest mid October · 60 checklists that week, 2,306 in all28%
  6. Clinton CountyBest the second week of October · 29 checklists that week, 1,615 in all27%

Best spots

Share of checklists at the peak
  1. Lake RemoteClay County, best early October · 35 checklists that week, 898 in all90%
  2. Smithville LakeClay County, best early October · 20 checklists that week, 598 in all86%
  3. Longview LakeJackson County, best the second week of October · 57 checklists that week, 2,343 in all60%
  4. Long Branch LakeMacon County, best late October · 27 checklists that week, 572 in all51%
  5. Smithville Lake (Camp Branch)Clay County, best early November · 21 checklists that week, 540 in all46%
  6. Little Blue River LakesJackson County, best late October · 23 checklists that week, 298 in all40%

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

Best time of day

In Missouri, the Franklin's Gull is most often listed on checklists started between 3 and 5 pm (0.9% of those checklists).

0%0.5%1%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: 0.5% of 27231 checklists7 am: 0.5% of 64162 checklists8 am: 0.4% of 67854 checklists9 am: 0.6% of 56515 checklists10 am: 0.5% of 47496 checklists11 am: 0.5% of 38845 checklists12 pm: 0.7% of 33383 checklists1 pm: 0.9% of 32503 checklists2 pm: 0.8% of 32615 checklists3 pm: 0.8% of 32514 checklists4 pm: 0.9% of 30274 checklists5 pm: 0.7% of 23446 checklists6 pm: 0.4% 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
January0.1%0.1%0.1%0.1%
February0%0.1%0.1%0.1%
March0.1%0.1%0.1%0.1%
April0.2%0.5%0.6%0.5%
May0.6%0.3%0.6%0.3%
June0.1%0.1%0%0.1%
July0.1%0.1%0.1%0.2%
August0.1%0.2%0.1%0.2%
September0.3%0.3%0.7%1.8%
October2.7%3.5%3.5%4.1%
November3.2%1.8%0.9%0.5%
December0.1%0.1%0.1%0%

Neighboring states

  • Arkansas: arrives mid October, 4 weeks later than Missouri
  • Iowa: arrives mid July, 8 weeks earlier than Missouri
  • Kansas: arrives early July, 10 weeks earlier than Missouri
  • Illinois: arrives late September, 1 week later than Missouri

Common questions

When do Franklin's Gulls arrive in Missouri?
Franklin's Gulls mostly pass through Missouri: the first show up in mid September, they are common by late September, peak in mid October (3.7% of checklists), and most are gone by the second week of November.
When do Franklin's Gulls leave Missouri?
Most Franklin's Gulls have left Missouri by the second week of November, when reports fall below half their usual rate. Stragglers are still reported until mid November.
When is the best time to see a Franklin's Gull in Missouri?
The Franklin's Gull is reported most often in mid October, on about 3.7% of Missouri checklists.
Where in Missouri are Franklin's Gulls seen most often?
By county, Monroe County, Macon County, and Clay County have the highest peak reporting rates for the Franklin's Gull (counties with at least 200 checklists).