WhenToBird

Plegadis falcinellus · Threskiornithidae

When Do Glossy Ibises Arrive in Rhode Island?

Adult Glossy Ibis
Photo: fede2cr, CC BY 4.0 via iNaturalist

Glossy Ibises reach Rhode Island in early April, are common by the second week of April, peak in the second week of June (5.6% of checklists), and most are gone by early August.

When to look

First arrivalsApr 1-7early April
Common byApr 8-14the second week of April
PeakJun 8-14the second week of June
Most gone byAug 1-7early August

Best: the second week of June. First arrivals early April; most are gone by early August. Peak: on about 5.6% of Rhode Island checklists.

  1. Jannot usually seen
  2. Febnot usually seen
  3. Marrare
  4. Aprcommon
  5. Maycommon
  6. Junpeak season
  7. Julpeak season
  8. Auguncommon
  9. Seprare
  10. Octnot usually seen
  11. Novnot usually seen
  12. Decnot usually seen

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

0%2%4%6%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: 0.1% of 4692 checklistsApr 1-7: 1.0% of 3280 checklistsApr 8-14: 3.9% of 3872 checklistsApr 15-21: 3.7% of 4037 checklistsApr 22-30: 4.1% of 5595 checklistsMay 1-7: 2.3% of 5699 checklistsMay 8-14: 2.4% of 6089 checklistsMay 15-21: 2.9% of 4937 checklistsMay 22-31: 3.6% of 5445 checklistsJun 1-7: 6.0% of 3031 checklistsJun 8-14: 5.4% of 2793 checklistsJun 15-21: 5.5% of 2736 checklistsJun 22-30: 4.9% of 3318 checklistsJul 1-7: 4.4% of 2629 checklistsJul 8-14: 5.1% of 2561 checklistsJul 15-21: 4.0% of 2580 checklistsJul 22-31: 2.8% of 3654 checklistsAug 1-7: 2.2% of 2629 checklistsAug 8-14: 1.3% of 2912 checklistsAug 15-21: 2.0% of 2850 checklistsAug 22-31: 0.9% of 4007 checklistsSep 1-7: 0.8% of 2893 checklistsSep 8-14: 0.3% of 2850 checklistsSep 15-21: 0.2% of 2770 checklistsSep 22-30: 0.2% of 3888 checklistsOct 1-7: 0.1% of 3174 checklistsOct 8-14: 0% of 3278 checklistsOct 15-21: 0.1% of 3008 checklistsOct 22-31: 0% of 3678 checklistsNov 1-7: 0% of 3270 checklistsNov 8-14: 0% of 3405 checklistsNov 15-21: 0% of 2907 checklistsNov 22-30: 0% of 3607 checklistsDec 1-7: 0% 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.

Embed this map on your site

Where in Rhode Island

Best counties

Share of checklists at the peak
  1. Bristol CountyBest early June · 311 checklists that week, 15,899 in all17%
  2. Newport CountyBest mid April · 604 checklists that week, 33,574 in all14%
  3. Washington CountyBest late July · 1408 checklists that week, 65,038 in all5.4%
  4. Kent CountyBest the second week of June · 308 checklists that week, 16,966 in all4.1%
  5. Providence CountyBest the second week of June · 651 checklists that week, 40,898 in all0.6%

Best spots

Share of checklists at the peak
  1. Round SwampNewport County, best the second week of April · 40 checklists that week, 310 in all77%
  2. Hodgkiss FarmNewport County, best late April · 38 checklists that week, 696 in all72%
  3. Sandy Point BeachKent County, best late June · 26 checklists that week, 522 in all41%
  4. Calf Pasture BeachWashington County, best mid June · 28 checklists that week, 549 in all33%
  5. Sapowet Marsh Management AreaNewport County, best late May · 20 checklists that week, 640 in all32%
  6. North PointBristol County, best late May · 66 checklists that week, 2,560 in all30%

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

Best time of day

In Rhode Island, the Glossy Ibis is most often listed on checklists started between 6 and 8 am (1.8% of those checklists).

0%1%2%3%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: 2.5% of 10493 checklists7 am: 1.4% of 17631 checklists8 am: 1.4% of 18834 checklists9 am: 1.3% of 17725 checklists10 am: 1.3% of 16696 checklists11 am: 1.3% of 14799 checklists12 pm: 1.0% of 12580 checklists1 pm: 1.2% of 12779 checklists2 pm: 0.9% of 12302 checklists3 pm: 1.2% of 11884 checklists4 pm: 1.4% of 9762 checklists5 pm: 1.7% of 6442 checklists6 pm: 1.7% 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%0.1%
April1.0%3.9%3.7%4.1%
May2.3%2.4%2.9%3.6%
June6.0%5.4%5.5%4.9%
July4.4%5.1%4.0%2.8%
August2.2%1.3%2.0%0.9%
September0.8%0.3%0.2%0.2%
October0.1%0%0.1%0%
November0%0%0%0%
December0%0%0%0%

Neighboring states

  • Massachusetts: arrives the second week of April, 1 week later than Rhode Island
  • Connecticut: arrives early April, in the same week than Rhode Island
  • New Hampshire: arrives mid April, 2 weeks later than Rhode Island
  • New Jersey: arrives early April, in the same week than Rhode Island

Common questions

When do Glossy Ibises arrive in Rhode Island?
Glossy Ibises reach Rhode Island in early April, are common by the second week of April, peak in the second week of June (5.6% of checklists), and most are gone by early August.
When do Glossy Ibises leave Rhode Island?
Most Glossy Ibises have left Rhode Island by early August, when reports fall below half their usual rate. Stragglers are still reported until late August.
When is the best time to see a Glossy Ibis in Rhode Island?
The Glossy Ibis is reported most often in the second week of June, on about 5.6% of Rhode Island checklists.
Where in Rhode Island are Glossy Ibises seen most often?
By county, Bristol County, Newport County, and Washington County have the highest peak reporting rates for the Glossy Ibis (counties with at least 200 checklists).