WhenToBird

Vireo philadelphicus · Vireonidae

When Do Philadelphia Vireos Arrive in Rhode Island?

Adult Philadelphia Vireo
Photo: Sue Carnahan, CC BY 4.0 via iNaturalist

Philadelphia Vireos mostly pass through Rhode Island: they arrive in the second week of September, peak in mid September (1.4% of checklists), and most are gone by early October.

When to look

First arrivalsSep 8-14the second week of September
Common bySep 8-14the second week of September
PeakSep 15-21mid September
Most gone byOct 1-7early October

Best: mid September. First arrivals the second week of September; most are gone by early October. Peak: on about 1.4% of Rhode Island checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marnot usually seen
  4. Aprnot usually seen
  5. Maynot usually seen
  6. Junnot usually seen
  7. Julnot usually seen
  8. Augrare
  9. Seppeak season
  10. Octcommon
  11. Novnot usually seen
  12. Decnot usually seen

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

0%0.5%1%1.5%2%Jan 1-7: 0% of 5678 checklistsJan 8-14: 0% of 4004 checklistsJan 15-21: 0% of 3691 checklistsJan 22-31: 0% of 4738 checklistsFeb 1-7: 0% of 3178 checklistsFeb 8-14: 0% of 3262 checklistsFeb 15-21: 0% of 4286 checklistsFeb 22-28: 0% of 3449 checklistsMar 1-7: 0% of 3014 checklistsMar 8-14: 0% of 3259 checklistsMar 15-21: 0% of 3320 checklistsMar 22-31: 0% of 4692 checklistsApr 1-7: 0% of 3280 checklistsApr 8-14: 0% of 3872 checklistsApr 15-21: 0% of 4037 checklistsApr 22-30: 0% of 5595 checklistsMay 1-7: 0% of 5699 checklistsMay 8-14: 0% of 6089 checklistsMay 15-21: 0% of 4937 checklistsMay 22-31: 0% of 5445 checklistsJun 1-7: 0% of 3031 checklistsJun 8-14: 0% of 2793 checklistsJun 15-21: 0% of 2736 checklistsJun 22-30: 0% of 3318 checklistsJul 1-7: 0% of 2629 checklistsJul 8-14: 0% of 2561 checklistsJul 15-21: 0% of 2580 checklistsJul 22-31: 0% of 3654 checklistsAug 1-7: 0% of 2629 checklistsAug 8-14: 0% of 2912 checklistsAug 15-21: 0% of 2850 checklistsAug 22-31: 0.1% of 4007 checklistsSep 1-7: 0.2% of 2893 checklistsSep 8-14: 1.2% of 2850 checklistsSep 15-21: 1.7% of 2770 checklistsSep 22-30: 1.4% of 3888 checklistsOct 1-7: 0.7% of 3174 checklistsOct 8-14: 0.3% of 3278 checklistsOct 15-21: 0.1% of 3008 checklistsOct 22-31: 0.1% of 3678 checklistsNov 1-7: 0% of 3270 checklistsNov 8-14: 0% of 3405 checklistsNov 15-21: 0.1% of 2907 checklistsNov 22-30: 0% of 3607 checklistsDec 1-7: 0.1% of 2415 checklistsDec 8-14: 0% of 2345 checklistsDec 15-21: 0% of 2836 checklistsDec 22-31: 0% of 4826 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 Rhode Island 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 Rhode Island

Best counties

Share of checklists at the peak
  1. Washington CountyBest mid September · 1115 checklists that week, 65,038 in all1.9%
  2. Newport CountyBest mid September · 544 checklists that week, 33,574 in all1.5%
  3. Providence CountyBest mid September · 710 checklists that week, 40,898 in all1.5%

Best spots

Share of checklists at the peak
  1. Butterfly PondProvidence County, best late September · 41 checklists that week, 277 in all33%
  2. Cananicut Island SanctuaryNewport County, best mid September · 26 checklists that week, 210 in all32%
  3. Sachem PondWashington County, best late September · 23 checklists that week, 174 in all7.5%
  4. Trustom Pond National Wildlife RefugeWashington County, best mid September · 149 checklists that week, 4,830 in all7.3%
  5. Fisherman's (Graves Point)Newport County, best early September · 24 checklists that week, 741 in all5.6%
  6. Block Island National Wildlife Refuge (Settlers Rock)Washington County, best late September · 45 checklists that week, 157 in all5.1%

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

Best time of day

In Rhode Island, the Philadelphia Vireo is most often listed on checklists started between 6 and 8 am (0.2% of those checklists).

0%0.5%12 am: too few checklists (42) to judge1 am: too few checklists (58) to judge2 am: too few checklists (45) to judge3 am: too few checklists (69) to judge4 am: too few checklists (319) to judge5 am: too few checklists (3170) to judge6 am: 0.3% of 10493 checklists7 am: 0.2% of 17631 checklists8 am: 0.1% of 18834 checklists9 am: 0.1% of 17725 checklists10 am: 0.1% of 16696 checklists11 am: 0.1% of 14799 checklists12 pm: 0.1% of 12580 checklists1 pm: 0.1% of 12779 checklists2 pm: 0.1% of 12302 checklists3 pm: 0.1% of 11884 checklists4 pm: 0.1% of 9762 checklists5 pm: 0.1% of 6442 checklists6 pm: 0.1% of 3947 checklists7 pm: too few checklists (2119) to judge8 pm: too few checklists (452) to judge9 pm: too few checklists (105) to judge10 pm: too few checklists (69) to judge11 pm: too few checklists (53) 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%0%0%0%
February0%0%0%0%
March0%0%0%0%
April0%0%0%0%
May0%0%0%0%
June0%0%0%0%
July0%0%0%0%
August0%0%0%0.1%
September0.2%1.2%1.7%1.4%
October0.7%0.3%0.1%0.1%
November0%0%0.1%0%
December0.1%0%0%0%

Neighboring states

  • Massachusetts: arrives early September, 1 week earlier than Rhode Island
  • Connecticut: arrives early September, 1 week earlier than Rhode Island
  • New Hampshire: arrives late August, 2 weeks earlier than Rhode Island
  • Vermont: arrives late August, 2 weeks earlier than Rhode Island

Common questions

When do Philadelphia Vireos arrive in Rhode Island?
Philadelphia Vireos mostly pass through Rhode Island: they arrive in the second week of September, peak in mid September (1.4% of checklists), and most are gone by early October.
When do Philadelphia Vireos leave Rhode Island?
Most Philadelphia Vireos have left Rhode Island by early October, when reports fall below half their usual rate.
When is the best time to see a Philadelphia Vireo in Rhode Island?
The Philadelphia Vireo is reported most often in mid September, on about 1.4% of Rhode Island checklists.
Where in Rhode Island are Philadelphia Vireos seen most often?
By county, Washington County, Newport County, and Providence County have the highest peak reporting rates for the Philadelphia Vireo (counties with at least 200 checklists).