WhenToBird

Birding spot · Penobscot County, Maine

Birding at East Branch Sebasticook River Reservoir: What You'll See Each Week

In November, the birds most often reported at East Branch Sebasticook River Reservoir are Mallard (98%), Ring-billed Gull (90%), and Canada Goose (80%). It is busiest in summer, when 37 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of April (41 species). 100 species have been reported here across 827 complete checklists from 173 birders.

Species by week

01020304050Jan 1-7: low data (0 checklists)Jan 8-14: low data (1 checklists)Jan 15-21: low data (1 checklists)Jan 22-31: low data (3 checklists)Feb 1-7: low data (1 checklists)Feb 8-14: low data (0 checklists)Feb 15-21: low data (0 checklists)Feb 22-28: low data (3 checklists)Mar 1-7: low data (6 checklists)Mar 8-14: low data (6 checklists)Mar 15-21: 28 species on 5%+ of 13 checklistsMar 22-31: 29 species on 5%+ of 30 checklistsApr 1-7: 30 species on 5%+ of 30 checklistsApr 8-14: 41 species on 5%+ of 33 checklistsApr 15-21: 33 species on 5%+ of 20 checklistsApr 22-30: 31 species on 5%+ of 22 checklistsMay 1-7: low data (2 checklists)May 8-14: low data (3 checklists)May 15-21: low data (1 checklists)May 22-31: low data (5 checklists)Jun 1-7: low data (1 checklists)Jun 8-14: low data (4 checklists)Jun 15-21: low data (2 checklists)Jun 22-30: low data (4 checklists)Jul 1-7: low data (6 checklists)Jul 8-14: low data (5 checklists)Jul 15-21: low data (7 checklists)Jul 22-31: 30 species on 5%+ of 10 checklistsAug 1-7: 25 species on 5%+ of 10 checklistsAug 8-14: low data (5 checklists)Aug 15-21: low data (9 checklists)Aug 22-31: low data (7 checklists)Sep 1-7: low data (7 checklists)Sep 8-14: 26 species on 5%+ of 15 checklistsSep 15-21: 28 species on 5%+ of 18 checklistsSep 22-30: 38 species on 5%+ of 34 checklistsOct 1-7: 31 species on 5%+ of 42 checklistsOct 8-14: 41 species on 5%+ of 50 checklistsOct 15-21: 40 species on 5%+ of 69 checklistsOct 22-31: 34 species on 5%+ of 84 checklistsNov 1-7: 36 species on 5%+ of 57 checklistsNov 8-14: 30 species on 5%+ of 82 checklistsNov 15-21: 27 species on 5%+ of 64 checklistsNov 22-30: 28 species on 5%+ of 36 checklistsDec 1-7: 25 species on 5%+ of 10 checklistsDec 8-14: low data (7 checklists)Dec 15-21: low data (0 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. 1Mallard98%
  2. 2Ring-billed Gull90%
  3. 3Canada Goose80%
  4. 4Hooded Merganser78%
  5. 5American Crow62%
  6. 6American Black Duck55%
  7. 7Green-winged Teal47%
  8. 8Northern Pintail46%
  9. 9American Wigeon39%
  10. 10Common Merganser33%
  11. 11Common Loon31%
  12. 12Bald Eagle27%
  13. 13Tundra Swan27%
  14. 14Lesser Scaup26%
  15. 15Bufflehead25%

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 0 species

    Spring 35 species

    1. Ring-billed Gull87%
    2. Mallard69%
    3. American Crow68%
    4. Common Loon48%
    5. Lesser Scaup48%

    Summer 37 species

    1. Mallard93%
    2. Ring-billed Gull86%
    3. Common Loon69%
    4. Eastern Kingbird61%
    5. Song Sparrow56%

    Fall 34 species

    1. Mallard97%
    2. Ring-billed Gull92%
    3. Canada Goose76%
    4. American Crow70%
    5. Hooded Merganser55%

    Specialties

    Birds reported far more often here than across Maine.

    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.