WhenToBird

Setophaga palmarum · Parulidae

When Do Palm Warblers Arrive in Louisiana?

Adult Palm Warbler
Photo: Sean Frey, CC BY 4.0 via iNaturalist

Palm Warblers are winter birds in Louisiana: the first arrive in late September, they are common by early October, peak in mid December (5.9% of checklists), and most are gone by the second week of April.

When to look

First arrivalsSep 22-30late September
Common byOct 1-7early October
PeakDec 15-21mid December
Most gone byApr 8-14the second week of April

Best: mid December. First arrivals late September; most are gone by the second week of April. Peak: on about 5.9% of Louisiana checklists.

  1. Janpeak season
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  5. Mayrare
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepuncommon
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

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

0%2%4%6%8%Jan 1-7: 5.0% of 8384 checklistsJan 8-14: 4.2% of 6265 checklistsJan 15-21: 4.0% of 6825 checklistsJan 22-31: 3.5% of 8776 checklistsFeb 1-7: 3.3% of 5956 checklistsFeb 8-14: 2.8% of 6291 checklistsFeb 15-21: 2.5% of 8044 checklistsFeb 22-28: 2.8% of 5946 checklistsMar 1-7: 2.7% of 5981 checklistsMar 8-14: 2.2% of 6307 checklistsMar 15-21: 2.5% of 6747 checklistsMar 22-31: 1.9% of 10487 checklistsApr 1-7: 2.4% of 8037 checklistsApr 8-14: 3.3% of 9577 checklistsApr 15-21: 2.2% of 11372 checklistsApr 22-30: 0.6% of 14344 checklistsMay 1-7: 0.2% of 8193 checklistsMay 8-14: 0.1% of 6823 checklistsMay 15-21: 0% of 4818 checklistsMay 22-31: 0% of 6206 checklistsJun 1-7: 0% of 3660 checklistsJun 8-14: 0% of 3455 checklistsJun 15-21: 0% of 3084 checklistsJun 22-30: 0% of 3904 checklistsJul 1-7: 0% of 3240 checklistsJul 8-14: 0% of 3235 checklistsJul 15-21: 0% of 3167 checklistsJul 22-31: 0% of 4328 checklistsAug 1-7: 0% of 3192 checklistsAug 8-14: 0% of 3394 checklistsAug 15-21: 0% of 3502 checklistsAug 22-31: 0% of 5658 checklistsSep 1-7: 0.1% of 4366 checklistsSep 8-14: 0.1% of 4648 checklistsSep 15-21: 0.3% of 4369 checklistsSep 22-30: 1.8% of 6418 checklistsOct 1-7: 2.5% of 5375 checklistsOct 8-14: 5.2% of 6213 checklistsOct 15-21: 6.9% of 5553 checklistsOct 22-31: 5.8% of 8879 checklistsNov 1-7: 5.1% of 6231 checklistsNov 8-14: 5.8% of 5011 checklistsNov 15-21: 5.4% of 4856 checklistsNov 22-30: 5.5% of 6696 checklistsDec 1-7: 5.4% of 4530 checklistsDec 8-14: 5.2% of 4883 checklistsDec 15-21: 6.2% of 5833 checklistsDec 22-31: 6.1% of 9940 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 Louisiana 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 Louisiana

Best counties

Share of checklists at the peak
  1. Plaquemines ParishBest late October · 110 checklists that week, 3,374 in all44%
  2. St. Bernard ParishBest late November · 53 checklists that week, 1,331 in all33%
  3. St. Charles ParishBest late November · 17 checklists that week, 969 in all18%
  4. Terrebonne ParishBest the second week of January · 126 checklists that week, 6,857 in all15%
  5. Jefferson ParishBest mid October · 707 checklists that week, 25,795 in all14%
  6. St. John the Baptist ParishBest mid February · 34 checklists that week, 957 in all13%

Best spots

Share of checklists at the peak
  1. Fosters CanalPlaquemines Parish, best the second week of November · 33 checklists that week, 363 in all72%
  2. Chalmette BattlefieldSt. Bernard Parish, best late November · 20 checklists that week, 282 in all58%
  3. Irish Bayou LagoonOrleans Parish, best late September · 24 checklists that week, 365 in all55%
  4. Tchefuncte River and Its TributariesSt. Tammany Parish, best late November · 37 checklists that week, 1,001 in all55%

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

Best time of day

In Louisiana, the Palm Warbler is most often listed on checklists started between 7 and 9 am (3.1% of those checklists).

0%1%2%3%4%12 am: too few checklists (110) to judge1 am: too few checklists (95) to judge2 am: too few checklists (78) to judge3 am: too few checklists (145) to judge4 am: too few checklists (266) to judge5 am: too few checklists (2981) to judge6 am: 2.3% of 21115 checklists7 am: 3.0% of 38843 checklists8 am: 3.2% of 36306 checklists9 am: 2.9% of 31934 checklists10 am: 2.9% of 27208 checklists11 am: 3.1% of 20733 checklists12 pm: 2.7% of 18505 checklists1 pm: 3.1% of 17383 checklists2 pm: 3.1% of 17422 checklists3 pm: 2.7% of 17005 checklists4 pm: 1.9% of 17170 checklists5 pm: 1.0% of 12536 checklists6 pm: 0.5% of 8080 checklists7 pm: too few checklists (3798) to judge8 pm: too few checklists (676) to judge9 pm: too few checklists (311) to judge10 pm: too few checklists (206) to judge11 pm: too few checklists (93) 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
January5.0%4.2%4.0%3.5%
February3.3%2.8%2.5%2.8%
March2.7%2.2%2.5%1.9%
April2.4%3.3%2.2%0.6%
May0.2%0.1%0%0%
June0%0%0%0%
July0%0%0%0%
August0%0%0%0%
September0.1%0.1%0.3%1.8%
October2.5%5.2%6.9%5.8%
November5.1%5.8%5.4%5.5%
December5.4%5.2%6.2%6.1%

Neighboring states

  • Mississippi: arrives mid September, 1 week earlier than Louisiana
  • Alabama: arrives mid September, 1 week earlier than Louisiana
  • Arkansas: arrives late March, 24 weeks earlier than Louisiana
  • Georgia: arrives the second week of September, 2 weeks earlier than Louisiana

Common questions

When do Palm Warblers arrive in Louisiana?
Palm Warblers are winter birds in Louisiana: the first arrive in late September, they are common by early October, peak in mid December (5.9% of checklists), and most are gone by the second week of April.
When do Palm Warblers leave Louisiana?
Most Palm Warblers have left Louisiana by the second week of April, when reports fall below half their usual rate. Stragglers are still reported until late April.
When is the best time to see a Palm Warbler in Louisiana?
The Palm Warbler is reported most often in mid December, on about 5.9% of Louisiana checklists.
Where in Louisiana are Palm Warblers seen most often?
By county, Plaquemines Parish, St. Bernard Parish, and St. Charles Parish have the highest peak reporting rates for the Palm Warbler (counties with at least 200 checklists).