WhenToBird

Birding spot · New Haven County, Connecticut

Birding at Hammonasset Natural Area Preserve (Willard Island): What You'll See Each Week

In November, the birds most often reported at Hammonasset Natural Area Preserve (Willard Island) are Black-capped Chickadee (67%), Yellow-rumped Warbler (65%), and White-throated Sparrow (58%). It is busiest in spring, when 90 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (94 species). 200 species have been reported here across 1,363 complete checklists from 505 birders.

Species by week

020406080100Jan 1-7: 48 species on 5%+ of 48 checklistsJan 8-14: 53 species on 5%+ of 36 checklistsJan 15-21: 54 species on 5%+ of 17 checklistsJan 22-31: 55 species on 5%+ of 39 checklistsFeb 1-7: 42 species on 5%+ of 10 checklistsFeb 8-14: 47 species on 5%+ of 15 checklistsFeb 15-21: 43 species on 5%+ of 15 checklistsFeb 22-28: 35 species on 5%+ of 10 checklistsMar 1-7: low data (8 checklists)Mar 8-14: low data (7 checklists)Mar 15-21: 52 species on 5%+ of 18 checklistsMar 22-31: 40 species on 5%+ of 23 checklistsApr 1-7: 57 species on 5%+ of 25 checklistsApr 8-14: 49 species on 5%+ of 23 checklistsApr 15-21: 66 species on 5%+ of 35 checklistsApr 22-30: 70 species on 5%+ of 55 checklistsMay 1-7: 75 species on 5%+ of 62 checklistsMay 8-14: 88 species on 5%+ of 101 checklistsMay 15-21: 94 species on 5%+ of 134 checklistsMay 22-31: 72 species on 5%+ of 71 checklistsJun 1-7: 54 species on 5%+ of 23 checklistsJun 8-14: 66 species on 5%+ of 17 checklistsJun 15-21: 60 species on 5%+ of 13 checklistsJun 22-30: 51 species on 5%+ of 13 checklistsJul 1-7: low data (5 checklists)Jul 8-14: low data (8 checklists)Jul 15-21: 61 species on 5%+ of 10 checklistsJul 22-31: 64 species on 5%+ of 10 checklistsAug 1-7: low data (8 checklists)Aug 8-14: low data (9 checklists)Aug 15-21: 79 species on 5%+ of 15 checklistsAug 22-31: 76 species on 5%+ of 37 checklistsSep 1-7: 70 species on 5%+ of 32 checklistsSep 8-14: 93 species on 5%+ of 37 checklistsSep 15-21: 91 species on 5%+ of 38 checklistsSep 22-30: 89 species on 5%+ of 35 checklistsOct 1-7: 75 species on 5%+ of 38 checklistsOct 8-14: 51 species on 5%+ of 31 checklistsOct 15-21: 67 species on 5%+ of 22 checklistsOct 22-31: 58 species on 5%+ of 28 checklistsNov 1-7: 47 species on 5%+ of 22 checklistsNov 8-14: 42 species on 5%+ of 25 checklistsNov 15-21: 60 species on 5%+ of 18 checklistsNov 22-30: 49 species on 5%+ of 28 checklistsDec 1-7: 55 species on 5%+ of 15 checklistsDec 8-14: 50 species on 5%+ of 18 checklistsDec 15-21: 39 species on 5%+ of 27 checklistsDec 22-31: 45 species on 5%+ of 29 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. 1Black-capped Chickadee67%
  2. 2Yellow-rumped Warbler65%
  3. 3White-throated Sparrow58%
  4. 4American Herring Gull57%
  5. 5Carolina Wren51%
  6. 6Northern Cardinal47%
  7. 7American Robin46%
  8. 8Song Sparrow46%
  9. 9Downy Woodpecker42%
  10. 10Dark-eyed Junco40%
  11. 11House Finch39%
  12. 12Northern Flicker37%
  13. 13Red-bellied Woodpecker34%
  14. 14Northern Mockingbird33%
  15. 15American Goldfinch32%

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 45 species

  1. Yellow-rumped Warbler76%
  2. Black-capped Chickadee68%
  3. White-throated Sparrow62%
  4. American Robin62%
  5. Carolina Wren52%

Spring 90 species

  1. Red-winged Blackbird81%
  2. Osprey80%
  3. American Robin78%
  4. Tree Swallow76%
  5. Song Sparrow72%

Summer 70 species

  1. Osprey92%
  2. Gray Catbird77%
  3. Tree Swallow74%
  4. Great Egret67%
  5. Marsh Wren63%

Fall 79 species

  1. Black-capped Chickadee75%
  2. Carolina Wren60%
  3. Gray Catbird55%
  4. Blue Jay54%
  5. Great Egret53%

Specialties

Birds reported far more often here than across Connecticut.

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.