WhenToBird

Birding spot · Fairfield County, Connecticut

Birding at Greenwich Harbor: What You'll See Each Week

In November, the birds most often reported at Greenwich Harbor are American Black Duck (88%), Ring-billed Gull (85%), and American Herring Gull (80%). It is busiest in spring, when 55 species turn up on at least 1 in 20 checklists, and species counts peak in mid December (58 species). 114 species have been reported here across 859 complete checklists from 181 birders.

Species by week

0204060Jan 1-7: 44 species on 5%+ of 66 checklistsJan 8-14: 42 species on 5%+ of 81 checklistsJan 15-21: 39 species on 5%+ of 79 checklistsJan 22-31: 40 species on 5%+ of 84 checklistsFeb 1-7: 41 species on 5%+ of 38 checklistsFeb 8-14: 44 species on 5%+ of 34 checklistsFeb 15-21: 44 species on 5%+ of 47 checklistsFeb 22-28: 42 species on 5%+ of 30 checklistsMar 1-7: 46 species on 5%+ of 32 checklistsMar 8-14: 51 species on 5%+ of 16 checklistsMar 15-21: 36 species on 5%+ of 24 checklistsMar 22-31: 56 species on 5%+ of 20 checklistsApr 1-7: 45 species on 5%+ of 23 checklistsApr 8-14: 53 species on 5%+ of 16 checklistsApr 15-21: low data (6 checklists)Apr 22-30: 52 species on 5%+ of 11 checklistsMay 1-7: low data (8 checklists)May 8-14: low data (4 checklists)May 15-21: low data (7 checklists)May 22-31: low data (6 checklists)Jun 1-7: low data (3 checklists)Jun 8-14: low data (7 checklists)Jun 15-21: low data (3 checklists)Jun 22-30: low data (1 checklists)Jul 1-7: low data (1 checklists)Jul 8-14: low data (4 checklists)Jul 15-21: low data (1 checklists)Jul 22-31: low data (6 checklists)Aug 1-7: low data (2 checklists)Aug 8-14: low data (2 checklists)Aug 15-21: low data (2 checklists)Aug 22-31: low data (3 checklists)Sep 1-7: low data (2 checklists)Sep 8-14: low data (5 checklists)Sep 15-21: low data (2 checklists)Sep 22-30: low data (7 checklists)Oct 1-7: low data (5 checklists)Oct 8-14: low data (9 checklists)Oct 15-21: low data (8 checklists)Oct 22-31: 52 species on 5%+ of 15 checklistsNov 1-7: low data (2 checklists)Nov 8-14: 45 species on 5%+ of 10 checklistsNov 15-21: 46 species on 5%+ of 11 checklistsNov 22-30: 51 species on 5%+ of 17 checklistsDec 1-7: low data (6 checklists)Dec 8-14: 51 species on 5%+ of 30 checklistsDec 15-21: 58 species on 5%+ of 33 checklistsDec 22-31: 48 species on 5%+ of 30 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
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 Duck88%
  2. 2Ring-billed Gull85%
  3. 3American Herring Gull80%
  4. 4Bufflehead78%
  5. 5Mallard68%
  6. 6Mute Swan60%
  7. 7European Starling55%
  8. 8Great Blue Heron53%
  9. 9Song Sparrow50%
  10. 10Canada Goose48%
  11. 11Double-crested Cormorant45%
  12. 12White-throated Sparrow43%
  13. 13Blue Jay38%
  14. 14Mourning Dove38%
  15. 15Fish Crow35%

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 46 species

  1. Bufflehead91%
  2. Ring-billed Gull85%
  3. Mallard82%
  4. American Black Duck81%
  5. Canada Goose76%

Spring 55 species

  1. American Black Duck79%
  2. American Herring Gull77%
  3. Bufflehead74%
  4. Mallard73%
  5. American Robin71%

Summer 53 species

  1. Song Sparrow80%
  2. European Starling77%
  3. American Robin74%
  4. Great Egret74%
  5. House Sparrow74%

Fall 51 species

  1. American Black Duck77%
  2. Ring-billed Gull77%
  3. American Herring Gull76%
  4. Mallard69%
  5. Double-crested Cormorant63%

Specialties

Birds reported far more often here than across Connecticut.

  • Redhead31% of checklists here vs 0.2% statewide: 137.4×
  • Lesser Scaup32% of checklists here vs 0.7% statewide: 48.1×
  • American Coot30% of checklists here vs 0.8% statewide: 38.8×
  • Bonaparte's Gull9.5% of checklists here vs 0.3% statewide: 29.7×
  • Gadwall55% of checklists here vs 2.5% statewide: 22.1×
  • Ruddy Duck14% of checklists here vs 0.9% statewide: 15.5×
  • Bufflehead78% of checklists here vs 5.2% statewide: 14.9×
  • Greater Scaup19% of checklists here vs 1.5% statewide: 12.5×

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.