WhenToBird

Birding spot · York County, Maine

Birding at Back Bay: What You'll See Each Week

In November, the birds most often reported at Back Bay are American Herring Gull (94%), Great Black-backed Gull (88%), and Ring-billed Gull (88%). It is busiest in spring, when 71 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (79 species). 171 species have been reported here across 1,607 complete checklists from 483 birders.

Species by week

020406080Jan 1-7: low data (5 checklists)Jan 8-14: low data (0 checklists)Jan 15-21: low data (0 checklists)Jan 22-31: low data (4 checklists)Feb 1-7: low data (3 checklists)Feb 8-14: low data (1 checklists)Feb 15-21: low data (3 checklists)Feb 22-28: low data (3 checklists)Mar 1-7: low data (4 checklists)Mar 8-14: low data (3 checklists)Mar 15-21: low data (0 checklists)Mar 22-31: low data (6 checklists)Apr 1-7: low data (1 checklists)Apr 8-14: 66 species on 5%+ of 14 checklistsApr 15-21: 68 species on 5%+ of 15 checklistsApr 22-30: low data (7 checklists)May 1-7: 61 species on 5%+ of 13 checklistsMay 8-14: 52 species on 5%+ of 23 checklistsMay 15-21: 79 species on 5%+ of 15 checklistsMay 22-31: 74 species on 5%+ of 38 checklistsJun 1-7: 73 species on 5%+ of 15 checklistsJun 8-14: low data (9 checklists)Jun 15-21: low data (9 checklists)Jun 22-30: 70 species on 5%+ of 15 checklistsJul 1-7: 56 species on 5%+ of 47 checklistsJul 8-14: 55 species on 5%+ of 40 checklistsJul 15-21: 65 species on 5%+ of 71 checklistsJul 22-31: 60 species on 5%+ of 149 checklistsAug 1-7: 63 species on 5%+ of 105 checklistsAug 8-14: 60 species on 5%+ of 96 checklistsAug 15-21: 63 species on 5%+ of 153 checklistsAug 22-31: 63 species on 5%+ of 236 checklistsSep 1-7: 58 species on 5%+ of 122 checklistsSep 8-14: 64 species on 5%+ of 99 checklistsSep 15-21: 54 species on 5%+ of 57 checklistsSep 22-30: 62 species on 5%+ of 89 checklistsOct 1-7: 35 species on 5%+ of 23 checklistsOct 8-14: 57 species on 5%+ of 15 checklistsOct 15-21: 59 species on 5%+ of 12 checklistsOct 22-31: 78 species on 5%+ of 17 checklistsNov 1-7: 71 species on 5%+ of 19 checklistsNov 8-14: low data (8 checklists)Nov 15-21: low data (7 checklists)Nov 22-30: 67 species on 5%+ of 16 checklistsDec 1-7: low data (9 checklists)Dec 8-14: low data (1 checklists)Dec 15-21: low data (2 checklists)Dec 22-31: low data (8 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 Herring Gull94%
  2. 2Great Black-backed Gull88%
  3. 3Ring-billed Gull88%
  4. 4Black-bellied Plover74%
  5. 5American Black Duck72%
  6. 6Dunlin72%
  7. 7Red-breasted Merganser72%
  8. 8Common Loon70%
  9. 9American Crow50%
  10. 10Surf Scoter50%
  11. 11Red-throated Loon46%
  12. 12Horned Grebe42%
  13. 13House Finch40%
  14. 14American Goldfinch38%
  15. 15Double-crested Cormorant38%

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 57 species

  1. American Herring Gull87%
  2. Common Loon74%
  3. American Black Duck69%
  4. Great Black-backed Gull69%
  5. Red-breasted Merganser67%

Spring 71 species

  1. American Herring Gull90%
  2. Great Black-backed Gull77%
  3. Common Eider64%
  4. Song Sparrow63%
  5. Double-crested Cormorant59%

Summer 61 species

  1. American Herring Gull96%
  2. Great Black-backed Gull92%
  3. Ring-billed Gull89%
  4. Double-crested Cormorant84%
  5. Semipalmated Plover81%

Fall 65 species

  1. American Herring Gull96%
  2. Great Black-backed Gull93%
  3. Ring-billed Gull89%
  4. Black-bellied Plover78%
  5. Double-crested Cormorant75%

Specialties

Birds reported far more often here than across Maine.

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.