Birding spot · Suffolk County, Massachusetts
Birding at Strandway/Castle Island: What You'll See Each Week In November, the birds most often reported at Strandway/Castle Island are American Herring Gull (95%), Ring-billed Gull (90%), and Common Eider (89%). It is busiest in spring, when 36 species turn up on at least 1 in 20 checklists, and species counts peak in mid April (47 species). 115 species have been reported here across 2,489 complete checklists from 876 birders.
Species by week 0 10 20 30 40 50 Jan 1-7: 32 species on 5%+ of 188 checklists Jan 8-14: 40 species on 5%+ of 139 checklists Jan 15-21: 36 species on 5%+ of 139 checklists Jan 22-31: 33 species on 5%+ of 164 checklists Feb 1-7: 38 species on 5%+ of 116 checklists Feb 8-14: 32 species on 5%+ of 105 checklists Feb 15-21: 33 species on 5%+ of 101 checklists Feb 22-28: 35 species on 5%+ of 98 checklists Mar 1-7: 32 species on 5%+ of 72 checklists Mar 8-14: 30 species on 5%+ of 87 checklists Mar 15-21: 33 species on 5%+ of 63 checklists Mar 22-31: 33 species on 5%+ of 47 checklists Apr 1-7: 31 species on 5%+ of 23 checklists Apr 8-14: 34 species on 5%+ of 32 checklists Apr 15-21: 47 species on 5%+ of 20 checklists Apr 22-30: 38 species on 5%+ of 22 checklists May 1-7: 40 species on 5%+ of 10 checklists May 8-14: 40 species on 5%+ of 12 checklists May 15-21: 43 species on 5%+ of 15 checklists May 22-31: 29 species on 5%+ of 24 checklists Jun 1-7: low data (7 checklists) Jun 8-14: 34 species on 5%+ of 15 checklists Jun 15-21: 33 species on 5%+ of 19 checklists Jun 22-30: 19 species on 5%+ of 21 checklists Jul 1-7: 25 species on 5%+ of 13 checklists Jul 8-14: 38 species on 5%+ of 13 checklists Jul 15-21: 27 species on 5%+ of 15 checklists Jul 22-31: 24 species on 5%+ of 21 checklists Aug 1-7: 39 species on 5%+ of 14 checklists Aug 8-14: 25 species on 5%+ of 18 checklists Aug 15-21: 22 species on 5%+ of 24 checklists Aug 22-31: 23 species on 5%+ of 26 checklists Sep 1-7: 27 species on 5%+ of 14 checklists Sep 8-14: 28 species on 5%+ of 14 checklists Sep 15-21: 22 species on 5%+ of 43 checklists Sep 22-30: 17 species on 5%+ of 41 checklists Oct 1-7: 20 species on 5%+ of 24 checklists Oct 8-14: 16 species on 5%+ of 21 checklists Oct 15-21: 22 species on 5%+ of 35 checklists Oct 22-31: 40 species on 5%+ of 20 checklists Nov 1-7: 31 species on 5%+ of 23 checklists Nov 8-14: 29 species on 5%+ of 24 checklists Nov 15-21: 33 species on 5%+ of 30 checklists Nov 22-30: 34 species on 5%+ of 54 checklists Dec 1-7: 34 species on 5%+ of 56 checklists Dec 8-14: 32 species on 5%+ of 65 checklists Dec 15-21: 37 species on 5%+ of 95 checklists Dec 22-31: 33 species on 5%+ of 247 checklists Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 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 American Herring Gull 95% 2 Ring-billed Gull 90% 3 Common Eider 89% 4 Double-crested Cormorant 85% 5 Great Black-backed Gull 82% 6 Red-breasted Merganser 82% 7 Common Loon 66% 8 Rock Pigeon 59% 9 European Starling 57% 10 House Sparrow 53% 11 Red-throated Loon 52% 12 Bufflehead 47% 13 Ruddy Turnstone 37% 14 Dunlin 35% 15 Surf Scoter 27% 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 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 .
American Herring Gull95%
Ring-billed Gull90%
Common Eider89%
Double-crested Cormorant85%
Great Black-backed Gull82%
Red-breasted Merganser82%
Common Loon66%
Rock Pigeon59%
European Starling57%
House Sparrow53%
Red-throated Loon52%
Bufflehead47%
Ruddy Turnstone37%
Dunlin35%
Surf Scoter27%