WhenToBird

Gavia immer · Gaviidae

When Do Common Loons Arrive in Tennessee?

Adult Common Loon
Photo: Hungry-Sarracenia Photo, CC BY 4.0 via iNaturalist

Common Loons are winter birds in Tennessee: the first arrive in late October, they are common by early November, peak in late November (8.6% of checklists), and most are gone by early April.

When to look

First arrivalsOct 22-31late October
Common byNov 1-7early November
PeakNov 22-30late November
Most gone byApr 1-7early April

Best: late November. First arrivals late October; most are gone by early April. Peak: on about 8.6% of Tennessee checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Apruncommon
  5. Mayrare
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augnot usually seen
  9. Sepnot usually seen
  10. Octuncommon
  11. Novpeak season
  12. Decpeak season

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

0%5%10%Jan 1-7: 4.7% of 16696 checklistsJan 8-14: 5.3% of 13056 checklistsJan 15-21: 4.6% of 13646 checklistsJan 22-31: 4.6% of 18071 checklistsFeb 1-7: 4.5% of 13342 checklistsFeb 8-14: 3.1% of 14316 checklistsFeb 15-21: 2.5% of 20395 checklistsFeb 22-28: 3.6% of 13129 checklistsMar 1-7: 3.6% of 12701 checklistsMar 8-14: 4.2% of 12789 checklistsMar 15-21: 4.3% of 13599 checklistsMar 22-31: 3.3% of 20293 checklistsApr 1-7: 2.6% of 15779 checklistsApr 8-14: 2.2% of 16646 checklistsApr 15-21: 1.1% of 18625 checklistsApr 22-30: 0.9% of 26689 checklistsMay 1-7: 0.6% of 21054 checklistsMay 8-14: 0.9% of 19954 checklistsMay 15-21: 0.4% of 14494 checklistsMay 22-31: 0.3% of 17790 checklistsJun 1-7: 0.2% of 11344 checklistsJun 8-14: 0.3% of 11049 checklistsJun 15-21: 0.1% of 9625 checklistsJun 22-30: 0.1% of 11522 checklistsJul 1-7: 0.2% of 9208 checklistsJul 8-14: 0.1% of 8814 checklistsJul 15-21: 0.1% of 8887 checklistsJul 22-31: 0.1% of 12739 checklistsAug 1-7: 0.1% of 9632 checklistsAug 8-14: 0.1% of 9514 checklistsAug 15-21: 0.1% of 9619 checklistsAug 22-31: 0.1% of 14227 checklistsSep 1-7: 0.1% of 11988 checklistsSep 8-14: 0.1% of 11660 checklistsSep 15-21: 0.1% of 11774 checklistsSep 22-30: 0.1% of 15658 checklistsOct 1-7: 0.1% of 12641 checklistsOct 8-14: 0.1% of 12389 checklistsOct 15-21: 0.3% of 10249 checklistsOct 22-31: 1.6% of 14085 checklistsNov 1-7: 4.8% of 10700 checklistsNov 8-14: 7.9% of 10709 checklistsNov 15-21: 8.1% of 9955 checklistsNov 22-30: 9.1% of 13423 checklistsDec 1-7: 8.4% of 10106 checklistsDec 8-14: 7.2% of 10478 checklistsDec 15-21: 5.8% of 12177 checklistsDec 22-31: 5.2% of 17397 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 Tennessee 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 Tennessee

Best counties

Share of checklists at the peak
  1. DeKalb CountyBest late November · 24 checklists that week, 2,539 in all63%
  2. Henry CountyBest mid November · 143 checklists that week, 5,668 in all45%
  3. Franklin CountyBest mid November · 89 checklists that week, 4,769 in all43%
  4. Clay CountyBest early March · 18 checklists that week, 704 in all40%
  5. Hardin CountyBest early December · 14 checklists that week, 2,710 in all37%
  6. Hamilton CountyBest late November · 1412 checklists that week, 56,614 in all26%

Best spots

Share of checklists at the peak
  1. Seven Points Public Use AreaDavidson County, best mid November · 21 checklists that week, 486 in all95%
  2. Booker T WashingtonHamilton County, best early December · 81 checklists that week, 1,440 in all95%
  3. J. Percy Priest Recreation AreaRutherford County, best late November · 29 checklists that week, 732 in all95%
  4. J. Percy Priest Recreation Area (Suggs Creek)Davidson County, best early December · 36 checklists that week, 719 in all95%
  5. Anderson Road Public Use AreaDavidson County, best mid November · 24 checklists that week, 548 in all94%

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

Best time of day

In Tennessee, the Common Loon is most often listed on checklists started between 1 and 3 pm (3.5% of those checklists).

0%1%2%3%4%12 am: too few checklists (224) to judge1 am: too few checklists (253) to judge2 am: too few checklists (245) to judge3 am: too few checklists (267) to judge4 am: too few checklists (582) to judge5 am: too few checklists (5688) to judge6 am: 1.8% of 36828 checklists7 am: 1.6% of 72816 checklists8 am: 1.9% of 76910 checklists9 am: 2.7% of 69071 checklists10 am: 3.0% of 60943 checklists11 am: 3.2% of 52311 checklists12 pm: 3.4% of 46524 checklists1 pm: 3.5% of 41133 checklists2 pm: 3.5% of 40305 checklists3 pm: 3.1% of 41013 checklists4 pm: 2.2% of 40029 checklists5 pm: 1.2% of 29775 checklists6 pm: 0.6% of 20977 checklists7 pm: too few checklists (12529) to judge8 pm: too few checklists (4456) to judge9 pm: too few checklists (1056) to judge10 pm: too few checklists (445) to judge11 pm: too few checklists (252) 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
January4.7%5.3%4.6%4.6%
February4.5%3.1%2.5%3.6%
March3.6%4.2%4.3%3.3%
April2.6%2.2%1.1%0.9%
May0.6%0.9%0.4%0.3%
June0.2%0.3%0.1%0.1%
July0.2%0.1%0.1%0.1%
August0.1%0.1%0.1%0.1%
September0.1%0.1%0.1%0.1%
October0.1%0.1%0.3%1.6%
November4.8%7.9%8.1%9.1%
December8.4%7.2%5.8%5.2%

Neighboring states

  • Kentucky: arrives mid October, 1 week earlier than Tennessee
  • Georgia: arrives early November, 1 week later than Tennessee
  • Alabama: arrives early November, 1 week later than Tennessee
  • Indiana: arrives early March, 17 weeks later than Tennessee

Common questions

When do Common Loons arrive in Tennessee?
Common Loons are winter birds in Tennessee: the first arrive in late October, they are common by early November, peak in late November (8.6% of checklists), and most are gone by early April.
When do Common Loons leave Tennessee?
Most Common Loons have left Tennessee by early April, when reports fall below half their usual rate. Stragglers are still reported until mid April.
When is the best time to see a Common Loon in Tennessee?
The Common Loon is reported most often in late November, on about 8.6% of Tennessee checklists.
Where in Tennessee are Common Loons seen most often?
By county, DeKalb County, Henry County, and Franklin County have the highest peak reporting rates for the Common Loon (counties with at least 200 checklists).