WhenToBird

Birding spot · Barnstable County, Massachusetts

Birding at Marstons Mills River Conservation Area: What You'll See Each Week

In November, the birds most often reported at Marstons Mills River Conservation Area are Mallard (95%), American Wigeon (91%), and Mute Swan (80%). It is busiest in spring, when 30 species turn up on at least 1 in 20 checklists, and species counts peak in late April (40 species). 87 species have been reported here across 1,696 complete checklists from 278 birders.

Species by week

010203040Jan 1-7: 23 species on 5%+ of 188 checklistsJan 8-14: 24 species on 5%+ of 114 checklistsJan 15-21: 23 species on 5%+ of 82 checklistsJan 22-31: 27 species on 5%+ of 68 checklistsFeb 1-7: 24 species on 5%+ of 55 checklistsFeb 8-14: 24 species on 5%+ of 58 checklistsFeb 15-21: 27 species on 5%+ of 47 checklistsFeb 22-28: 26 species on 5%+ of 43 checklistsMar 1-7: 19 species on 5%+ of 21 checklistsMar 8-14: 27 species on 5%+ of 46 checklistsMar 15-21: 23 species on 5%+ of 28 checklistsMar 22-31: 28 species on 5%+ of 33 checklistsApr 1-7: 27 species on 5%+ of 13 checklistsApr 8-14: 24 species on 5%+ of 22 checklistsApr 15-21: 28 species on 5%+ of 14 checklistsApr 22-30: 40 species on 5%+ of 19 checklistsMay 1-7: 25 species on 5%+ of 15 checklistsMay 8-14: 26 species on 5%+ of 12 checklistsMay 15-21: 29 species on 5%+ of 13 checklistsMay 22-31: 30 species on 5%+ of 14 checklistsJun 1-7: low data (7 checklists)Jun 8-14: low data (3 checklists)Jun 15-21: low data (2 checklists)Jun 22-30: low data (8 checklists)Jul 1-7: low data (4 checklists)Jul 8-14: low data (2 checklists)Jul 15-21: low data (0 checklists)Jul 22-31: low data (4 checklists)Aug 1-7: low data (2 checklists)Aug 8-14: low data (2 checklists)Aug 15-21: low data (3 checklists)Aug 22-31: low data (4 checklists)Sep 1-7: 30 species on 5%+ of 11 checklistsSep 8-14: 28 species on 5%+ of 20 checklistsSep 15-21: 22 species on 5%+ of 22 checklistsSep 22-30: 21 species on 5%+ of 31 checklistsOct 1-7: 21 species on 5%+ of 38 checklistsOct 8-14: 23 species on 5%+ of 57 checklistsOct 15-21: 26 species on 5%+ of 58 checklistsOct 22-31: 23 species on 5%+ of 87 checklistsNov 1-7: 30 species on 5%+ of 54 checklistsNov 8-14: 23 species on 5%+ of 56 checklistsNov 15-21: 25 species on 5%+ of 71 checklistsNov 22-30: 26 species on 5%+ of 76 checklistsDec 1-7: 19 species on 5%+ of 43 checklistsDec 8-14: 22 species on 5%+ of 37 checklistsDec 15-21: 19 species on 5%+ of 24 checklistsDec 22-31: 24 species on 5%+ of 65 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. 1Mallard95%
  2. 2American Wigeon91%
  3. 3Mute Swan80%
  4. 4Green-winged Teal67%
  5. 5Gadwall63%
  6. 6Blue Jay29%
  7. 7Song Sparrow24%
  8. 8American Black Duck22%
  9. 9Bufflehead22%
  10. 10Hooded Merganser21%
  11. 11Northern Pintail21%
  12. 12Belted Kingfisher19%
  13. 13Eurasian Wigeon18%
  14. 14Black-capped Chickadee14%
  15. 15Great Blue Heron14%

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 21 species

  1. Mallard96%
  2. Mute Swan87%
  3. Hooded Merganser62%
  4. Gadwall59%
  5. Northern Pintail59%

Spring 30 species

  1. Mute Swan85%
  2. Mallard71%
  3. Red-winged Blackbird58%
  4. Osprey48%
  5. Common Grackle40%

Summer 29 species

  1. Red-winged Blackbird78%
  2. Common Grackle63%
  3. Mute Swan54%
  4. Osprey54%
  5. Gray Catbird41%

Fall 27 species

  1. American Wigeon91%
  2. Mallard90%
  3. Mute Swan78%
  4. Green-winged Teal60%
  5. Blue Jay42%

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.