WhenToBird

Birding spot · Suffolk County, Massachusetts

Birding at Belle Isle Marsh Reservation: What You'll See Each Week

In November, the birds most often reported at Belle Isle Marsh Reservation are American Black Duck (87%), American Herring Gull (81%), and Song Sparrow (79%). It is busiest in summer, when 53 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of July (57 species). 129 species have been reported here across 800 complete checklists from 210 birders.

Species by week

0204060Jan 1-7: low data (5 checklists)Jan 8-14: low data (1 checklists)Jan 15-21: low data (5 checklists)Jan 22-31: low data (7 checklists)Feb 1-7: low data (4 checklists)Feb 8-14: low data (3 checklists)Feb 15-21: low data (1 checklists)Feb 22-28: low data (3 checklists)Mar 1-7: low data (7 checklists)Mar 8-14: low data (5 checklists)Mar 15-21: low data (4 checklists)Mar 22-31: 39 species on 5%+ of 14 checklistsApr 1-7: low data (3 checklists)Apr 8-14: 46 species on 5%+ of 10 checklistsApr 15-21: 42 species on 5%+ of 10 checklistsApr 22-30: low data (5 checklists)May 1-7: 51 species on 5%+ of 13 checklistsMay 8-14: 52 species on 5%+ of 14 checklistsMay 15-21: low data (9 checklists)May 22-31: 55 species on 5%+ of 17 checklistsJun 1-7: 51 species on 5%+ of 16 checklistsJun 8-14: low data (9 checklists)Jun 15-21: 47 species on 5%+ of 12 checklistsJun 22-30: low data (3 checklists)Jul 1-7: 48 species on 5%+ of 14 checklistsJul 8-14: 57 species on 5%+ of 16 checklistsJul 15-21: 53 species on 5%+ of 39 checklistsJul 22-31: 50 species on 5%+ of 34 checklistsAug 1-7: 55 species on 5%+ of 40 checklistsAug 8-14: 55 species on 5%+ of 29 checklistsAug 15-21: 52 species on 5%+ of 39 checklistsAug 22-31: 51 species on 5%+ of 58 checklistsSep 1-7: 46 species on 5%+ of 44 checklistsSep 8-14: 39 species on 5%+ of 23 checklistsSep 15-21: low data (9 checklists)Sep 22-30: 51 species on 5%+ of 19 checklistsOct 1-7: 55 species on 5%+ of 12 checklistsOct 8-14: 54 species on 5%+ of 34 checklistsOct 15-21: 46 species on 5%+ of 68 checklistsOct 22-31: 48 species on 5%+ of 64 checklistsNov 1-7: 43 species on 5%+ of 35 checklistsNov 8-14: 38 species on 5%+ of 21 checklistsNov 15-21: low data (7 checklists)Nov 22-30: low data (5 checklists)Dec 1-7: low data (2 checklists)Dec 8-14: low data (1 checklists)Dec 15-21: low data (5 checklists)Dec 22-31: low data (2 checklists)JanFebMarAprMayJunJulAugSepOctNovDec
Number of species reported on at least 5% of complete checklists, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

In November: what to expect

  1. 1American Black Duck87%
  2. 2American Herring Gull81%
  3. 3Song Sparrow79%
  4. 4Double-crested Cormorant78%
  5. 5Bufflehead63%
  6. 6American Crow53%
  7. 7Great Blue Heron53%
  8. 8Great Egret49%
  9. 9Mallard49%
  10. 10Northern Mockingbird47%
  11. 11Red-tailed Hawk41%
  12. 12Ring-billed Gull40%
  13. 13Yellow-rumped Warbler40%
  14. 14European Starling38%
  15. 15Canada Goose35%

Share of complete checklists at this spot that reported the bird in November. The sparkline is the whole year, with this month highlighted.

Season by season

Winter 38 species

  1. American Black Duck87%
  2. Bufflehead82%
  3. Canada Goose77%
  4. American Herring Gull74%
  5. Mallard69%

Spring 51 species

  1. Song Sparrow76%
  2. Red-winged Blackbird74%
  3. American Herring Gull64%
  4. House Sparrow62%
  5. American Black Duck59%

Summer 53 species

  1. Snowy Egret82%
  2. European Starling77%
  3. Great Egret72%
  4. American Herring Gull72%
  5. Least Sandpiper70%

Fall 51 species

  1. Double-crested Cormorant79%
  2. American Herring Gull74%
  3. Great Egret68%
  4. Song Sparrow67%
  5. American Black Duck62%

Specialties

Birds reported far more often here than across Massachusetts.

Nearby spots

Frequency is the share of complete checklists at this location that listed the bird, 2016–2025. Busy places report more of everything, and the weekly chart counts species on at least 5% of checklists so a few stray reports do not inflate it. How to read it.