WhenToBird

Birding spot · Delaware County, Pennsylvania

Birding at Crum Creek Reservoir: What You'll See Each Week

In November, the birds most often reported at Crum Creek Reservoir are Canada Goose (92%), Hooded Merganser (76%), and American Black Duck (59%). It is busiest in spring, when 54 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (71 species). 135 species have been reported here across 1,947 complete checklists from 183 birders.

Species by week

020406080Jan 1-7: 38 species on 5%+ of 87 checklistsJan 8-14: 34 species on 5%+ of 55 checklistsJan 15-21: 36 species on 5%+ of 64 checklistsJan 22-31: 41 species on 5%+ of 60 checklistsFeb 1-7: 36 species on 5%+ of 32 checklistsFeb 8-14: 30 species on 5%+ of 41 checklistsFeb 15-21: 37 species on 5%+ of 55 checklistsFeb 22-28: 37 species on 5%+ of 61 checklistsMar 1-7: 35 species on 5%+ of 46 checklistsMar 8-14: 37 species on 5%+ of 58 checklistsMar 15-21: 41 species on 5%+ of 51 checklistsMar 22-31: 42 species on 5%+ of 78 checklistsApr 1-7: 44 species on 5%+ of 46 checklistsApr 8-14: 49 species on 5%+ of 36 checklistsApr 15-21: 50 species on 5%+ of 38 checklistsApr 22-30: 59 species on 5%+ of 53 checklistsMay 1-7: 55 species on 5%+ of 43 checklistsMay 8-14: 62 species on 5%+ of 28 checklistsMay 15-21: 71 species on 5%+ of 18 checklistsMay 22-31: 61 species on 5%+ of 18 checklistsJun 1-7: 52 species on 5%+ of 21 checklistsJun 8-14: 57 species on 5%+ of 20 checklistsJun 15-21: 52 species on 5%+ of 20 checklistsJun 22-30: 53 species on 5%+ of 18 checklistsJul 1-7: 58 species on 5%+ of 19 checklistsJul 8-14: 53 species on 5%+ of 19 checklistsJul 15-21: 58 species on 5%+ of 29 checklistsJul 22-31: 51 species on 5%+ of 32 checklistsAug 1-7: 48 species on 5%+ of 16 checklistsAug 8-14: 50 species on 5%+ of 19 checklistsAug 15-21: 48 species on 5%+ of 13 checklistsAug 22-31: 39 species on 5%+ of 24 checklistsSep 1-7: 46 species on 5%+ of 23 checklistsSep 8-14: 51 species on 5%+ of 13 checklistsSep 15-21: 52 species on 5%+ of 16 checklistsSep 22-30: 60 species on 5%+ of 17 checklistsOct 1-7: 56 species on 5%+ of 16 checklistsOct 8-14: 42 species on 5%+ of 23 checklistsOct 15-21: 44 species on 5%+ of 25 checklistsOct 22-31: 49 species on 5%+ of 38 checklistsNov 1-7: 51 species on 5%+ of 38 checklistsNov 8-14: 41 species on 5%+ of 42 checklistsNov 15-21: 38 species on 5%+ of 59 checklistsNov 22-30: 34 species on 5%+ of 110 checklistsDec 1-7: 44 species on 5%+ of 55 checklistsDec 8-14: 37 species on 5%+ of 43 checklistsDec 15-21: 38 species on 5%+ of 141 checklistsDec 22-31: 41 species on 5%+ of 70 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. 1Canada Goose92%
  2. 2Hooded Merganser76%
  3. 3American Black Duck59%
  4. 4Mallard57%
  5. 5White-throated Sparrow56%
  6. 6Belted Kingfisher49%
  7. 7Song Sparrow45%
  8. 8Carolina Chickadee43%
  9. 9Northern Cardinal42%
  10. 10Pied-billed Grebe33%
  11. 11Carolina Wren32%
  12. 12American Crow31%
  13. 13Blue Jay31%
  14. 14Tufted Titmouse28%
  15. 15Downy Woodpecker27%

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 39 species

  1. Canada Goose95%
  2. Hooded Merganser74%
  3. American Black Duck50%
  4. Northern Cardinal47%
  5. White-throated Sparrow47%

Spring 54 species

  1. Canada Goose95%
  2. Red-winged Blackbird85%
  3. Song Sparrow72%
  4. Wood Duck67%
  5. Northern Cardinal65%

Summer 54 species

  1. Canada Goose91%
  2. Gray Catbird80%
  3. Song Sparrow79%
  4. Mallard75%
  5. Wood Duck72%

Fall 44 species

  1. Canada Goose89%
  2. Belted Kingfisher57%
  3. Mallard55%
  4. Northern Cardinal48%
  5. American Black Duck47%

Specialties

Birds reported far more often here than across Pennsylvania.

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.