WhenToBird

Lophodytes cucullatus · Anatidae

When Do Hooded Mergansers Arrive in Mississippi?

Adult male Hooded Merganser
Photo: Justin Flint, CC BY 4.0 via iNaturalist

Hooded Mergansers are winter birds in Mississippi: the first arrive in early November, they are common by the second week of November, peak in the second week of December (9.8% of checklists), and most are gone by late February.

When to look

First arrivalsNov 1-7early November
Common byNov 8-14the second week of November
PeakDec 8-14the second week of December
Most gone byFeb 22-28late February

Best: the second week of December. First arrivals early November; most are gone by late February. Peak: on about 9.8% of Mississippi checklists.

  1. Janpeak season
  2. Febcommon
  3. Maruncommon
  4. Aprrare
  5. Maynot usually seen
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepnot usually seen
  10. Octrare
  11. Novpeak season
  12. Decpeak season

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

0%5%10%15%Jan 1-7: 8.4% of 4836 checklistsJan 8-14: 8.2% of 3323 checklistsJan 15-21: 7.6% of 3400 checklistsJan 22-31: 7.1% of 4705 checklistsFeb 1-7: 5.7% of 3387 checklistsFeb 8-14: 4.6% of 3911 checklistsFeb 15-21: 3.8% of 4691 checklistsFeb 22-28: 4.8% of 3409 checklistsMar 1-7: 2.9% of 3276 checklistsMar 8-14: 2.3% of 3273 checklistsMar 15-21: 2.2% of 3552 checklistsMar 22-31: 1.2% of 5618 checklistsApr 1-7: 0.8% of 4432 checklistsApr 8-14: 0.8% of 4907 checklistsApr 15-21: 0.7% of 5239 checklistsApr 22-30: 0.3% of 7043 checklistsMay 1-7: 0.4% of 4597 checklistsMay 8-14: 0.5% of 4383 checklistsMay 15-21: 0.2% of 3088 checklistsMay 22-31: 0.2% of 3805 checklistsJun 1-7: 0.3% of 2658 checklistsJun 8-14: 0.1% of 2469 checklistsJun 15-21: 0.1% of 2112 checklistsJun 22-30: 0.1% of 2534 checklistsJul 1-7: 0.1% of 2099 checklistsJul 8-14: 0.1% of 1885 checklistsJul 15-21: 0.1% of 1811 checklistsJul 22-31: 0.1% of 2793 checklistsAug 1-7: 0% of 2045 checklistsAug 8-14: 0.1% of 2210 checklistsAug 15-21: 0% of 2437 checklistsAug 22-31: 0% of 3415 checklistsSep 1-7: 0% of 2837 checklistsSep 8-14: 0.1% of 2585 checklistsSep 15-21: 0.1% of 2870 checklistsSep 22-30: 0% of 3610 checklistsOct 1-7: 0% of 2938 checklistsOct 8-14: 0% of 3457 checklistsOct 15-21: 0.1% of 3168 checklistsOct 22-31: 0.5% of 3752 checklistsNov 1-7: 1.8% of 2847 checklistsNov 8-14: 5.8% of 2648 checklistsNov 15-21: 7.5% of 2599 checklistsNov 22-30: 7.5% of 3389 checklistsDec 1-7: 9.8% of 2419 checklistsDec 8-14: 9.4% of 2526 checklistsDec 15-21: 10% of 2966 checklistsDec 22-31: 8.7% of 4466 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 Mississippi 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 Mississippi

Best counties

Share of checklists at the peak
  1. Monroe CountyBest late November · 11 checklists that week, 581 in all58%
  2. Yalobusha CountyBest early December · 17 checklists that week, 368 in all49%
  3. Lee CountyBest early December · 26 checklists that week, 2,179 in all41%
  4. Quitman CountyBest late February · 13 checklists that week, 395 in all40%
  5. Tallahatchie CountyBest mid February · 17 checklists that week, 303 in all33%
  6. Winston CountyBest mid November · 10 checklists that week, 382 in all33%

Best spots

Share of checklists at the peak
  1. Ig Levy Memorial ParkJackson County, best late November · 20 checklists that week, 307 in all80%
  2. Lefleur's Bluff State ParkHinds County, best mid January · 21 checklists that week, 1,235 in all66%
  3. Pearl River Wildlife Management AreaMadison County, best the second week of January · 22 checklists that week, 560 in all57%
  4. Bellefontaine Point Coastal ReserveJackson County, best late December · 30 checklists that week, 676 in all55%

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

Best time of day

In Mississippi, the Hooded Merganser is most often listed on checklists started between 12 and 2 pm (3.6% of those checklists).

0%1%2%3%4%12 am: too few checklists (54) to judge1 am: too few checklists (48) to judge2 am: too few checklists (28) to judge3 am: too few checklists (60) to judge4 am: too few checklists (114) to judge5 am: too few checklists (1139) to judge6 am: 2.4% of 9054 checklists7 am: 3.0% of 18481 checklists8 am: 3.0% of 17525 checklists9 am: 2.9% of 15482 checklists10 am: 2.9% of 14380 checklists11 am: 3.1% of 12728 checklists12 pm: 3.8% of 11009 checklists1 pm: 3.4% of 10651 checklists2 pm: 3.4% of 10787 checklists3 pm: 2.9% of 11221 checklists4 pm: 1.9% of 11861 checklists5 pm: 0.6% of 8854 checklists6 pm: 0.1% of 6018 checklists7 pm: too few checklists (2387) to judge8 pm: too few checklists (314) to judge9 pm: too few checklists (114) to judge10 pm: too few checklists (63) to judge11 pm: too few checklists (48) 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
January8.4%8.2%7.6%7.1%
February5.7%4.6%3.8%4.8%
March2.9%2.3%2.2%1.2%
April0.8%0.8%0.7%0.3%
May0.4%0.5%0.2%0.2%
June0.3%0.1%0.1%0.1%
July0.1%0.1%0.1%0.1%
August0%0.1%0%0%
September0%0.1%0.1%0%
October0%0%0.1%0.5%
November1.8%5.8%7.5%7.5%
December9.8%9.4%10%8.7%

Neighboring states

  • Alabama: arrives early November, in the same week than Mississippi
  • Louisiana: arrives the second week of November, 1 week later than Mississippi
  • Arkansas: arrives early November, in the same week than Mississippi
  • Georgia: arrives early November, in the same week than Mississippi

Common questions

When do Hooded Mergansers arrive in Mississippi?
Hooded Mergansers are winter birds in Mississippi: the first arrive in early November, they are common by the second week of November, peak in the second week of December (9.8% of checklists), and most are gone by late February.
When do Hooded Mergansers leave Mississippi?
Most Hooded Mergansers have left Mississippi by late February, when reports fall below half their usual rate. Stragglers are still reported until late March.
When is the best time to see a Hooded Merganser in Mississippi?
The Hooded Merganser is reported most often in the second week of December, on about 9.8% of Mississippi checklists.
Where in Mississippi are Hooded Mergansers seen most often?
By county, Monroe County, Yalobusha County, and Lee County have the highest peak reporting rates for the Hooded Merganser (counties with at least 200 checklists).