WhenToBird

Birding spot · Morris County, New Jersey

Birding at Great Swamp National Wildlife Refuge (Primrose Brook): What You'll See Each Week

In November, the birds most often reported at Great Swamp National Wildlife Refuge (Primrose Brook) are Blue Jay (62%), Mallard (59%), and Turkey Vulture (59%). It is busiest in spring, when 78 species turn up on at least 1 in 20 checklists, and species counts peak in early May (84 species). 146 species have been reported here across 977 complete checklists from 293 birders.

Species by week

020406080100Jan 1-7: 39 species on 5%+ of 26 checklistsJan 8-14: low data (9 checklists)Jan 15-21: 37 species on 5%+ of 14 checklistsJan 22-31: 39 species on 5%+ of 17 checklistsFeb 1-7: 48 species on 5%+ of 14 checklistsFeb 8-14: 48 species on 5%+ of 18 checklistsFeb 15-21: 36 species on 5%+ of 21 checklistsFeb 22-28: low data (7 checklists)Mar 1-7: 36 species on 5%+ of 22 checklistsMar 8-14: 41 species on 5%+ of 30 checklistsMar 15-21: 42 species on 5%+ of 30 checklistsMar 22-31: 47 species on 5%+ of 24 checklistsApr 1-7: 71 species on 5%+ of 20 checklistsApr 8-14: 62 species on 5%+ of 25 checklistsApr 15-21: 63 species on 5%+ of 26 checklistsApr 22-30: 76 species on 5%+ of 37 checklistsMay 1-7: 84 species on 5%+ of 19 checklistsMay 8-14: 77 species on 5%+ of 56 checklistsMay 15-21: 81 species on 5%+ of 20 checklistsMay 22-31: 69 species on 5%+ of 24 checklistsJun 1-7: 73 species on 5%+ of 18 checklistsJun 8-14: 76 species on 5%+ of 18 checklistsJun 15-21: 70 species on 5%+ of 17 checklistsJun 22-30: 76 species on 5%+ of 15 checklistsJul 1-7: 60 species on 5%+ of 10 checklistsJul 8-14: low data (9 checklists)Jul 15-21: low data (8 checklists)Jul 22-31: 68 species on 5%+ of 19 checklistsAug 1-7: 46 species on 5%+ of 11 checklistsAug 8-14: 58 species on 5%+ of 11 checklistsAug 15-21: 57 species on 5%+ of 13 checklistsAug 22-31: 70 species on 5%+ of 13 checklistsSep 1-7: low data (7 checklists)Sep 8-14: low data (9 checklists)Sep 15-21: 57 species on 5%+ of 12 checklistsSep 22-30: 54 species on 5%+ of 15 checklistsOct 1-7: 62 species on 5%+ of 17 checklistsOct 8-14: 68 species on 5%+ of 22 checklistsOct 15-21: 68 species on 5%+ of 20 checklistsOct 22-31: 61 species on 5%+ of 37 checklistsNov 1-7: 59 species on 5%+ of 43 checklistsNov 8-14: 61 species on 5%+ of 18 checklistsNov 15-21: 51 species on 5%+ of 31 checklistsNov 22-30: 51 species on 5%+ of 46 checklistsDec 1-7: 38 species on 5%+ of 21 checklistsDec 8-14: 58 species on 5%+ of 18 checklistsDec 15-21: 68 species on 5%+ of 20 checklistsDec 22-31: 55 species on 5%+ of 20 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. 1Blue Jay62%
  2. 2Mallard59%
  3. 3Turkey Vulture59%
  4. 4Canada Goose56%
  5. 5Red-bellied Woodpecker51%
  6. 6American Robin51%
  7. 7Northern Harrier51%
  8. 8American Crow49%
  9. 9Red-tailed Hawk49%
  10. 10White-throated Sparrow48%
  11. 11Red-winged Blackbird42%
  12. 12Song Sparrow41%
  13. 13Dark-eyed Junco38%
  14. 14Northern Flicker38%
  15. 15American Black Duck35%

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 44 species

  1. Canada Goose70%
  2. Mallard63%
  3. Blue Jay52%
  4. Red-tailed Hawk49%
  5. Northern Harrier42%

Spring 78 species

  1. Red-winged Blackbird80%
  2. American Robin69%
  3. Canada Goose61%
  4. Song Sparrow57%
  5. Tree Swallow57%

Summer 66 species

  1. Gray Catbird88%
  2. Red-winged Blackbird76%
  3. American Robin73%
  4. American Goldfinch69%
  5. Song Sparrow64%

Fall 58 species

  1. Blue Jay70%
  2. Red-bellied Woodpecker58%
  3. Turkey Vulture52%
  4. American Robin49%
  5. Canada Goose48%

Specialties

Birds reported far more often here than across New Jersey.

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.