WhenToBird

Birding spot · Montgomery County, Pennsylvania

Birding at Four Mills Preserve: What You'll See Each Week

In November, the birds most often reported at Four Mills Preserve are Red-bellied Woodpecker (80%), Northern Cardinal (77%), and Mallard (76%). It is busiest in spring, when 64 species turn up on at least 1 in 20 checklists, and species counts peak in early May (68 species). 118 species have been reported here across 953 complete checklists from 187 birders.

Species by week

020406080Jan 1-7: 43 species on 5%+ of 18 checklistsJan 8-14: 33 species on 5%+ of 23 checklistsJan 15-21: 44 species on 5%+ of 15 checklistsJan 22-31: 41 species on 5%+ of 27 checklistsFeb 1-7: 35 species on 5%+ of 25 checklistsFeb 8-14: 48 species on 5%+ of 19 checklistsFeb 15-21: 42 species on 5%+ of 16 checklistsFeb 22-28: 42 species on 5%+ of 20 checklistsMar 1-7: 47 species on 5%+ of 19 checklistsMar 8-14: 36 species on 5%+ of 23 checklistsMar 15-21: 47 species on 5%+ of 24 checklistsMar 22-31: 47 species on 5%+ of 43 checklistsApr 1-7: 51 species on 5%+ of 35 checklistsApr 8-14: 53 species on 5%+ of 59 checklistsApr 15-21: 52 species on 5%+ of 59 checklistsApr 22-30: 54 species on 5%+ of 77 checklistsMay 1-7: 68 species on 5%+ of 104 checklistsMay 8-14: 62 species on 5%+ of 71 checklistsMay 15-21: 59 species on 5%+ of 42 checklistsMay 22-31: 55 species on 5%+ of 22 checklistsJun 1-7: 38 species on 5%+ of 10 checklistsJun 8-14: low data (4 checklists)Jun 15-21: low data (2 checklists)Jun 22-30: low data (6 checklists)Jul 1-7: low data (3 checklists)Jul 8-14: low data (5 checklists)Jul 15-21: low data (4 checklists)Jul 22-31: low data (7 checklists)Aug 1-7: low data (3 checklists)Aug 8-14: low data (5 checklists)Aug 15-21: low data (6 checklists)Aug 22-31: low data (6 checklists)Sep 1-7: low data (6 checklists)Sep 8-14: 52 species on 5%+ of 11 checklistsSep 15-21: 55 species on 5%+ of 16 checklistsSep 22-30: low data (5 checklists)Oct 1-7: 59 species on 5%+ of 13 checklistsOct 8-14: low data (4 checklists)Oct 15-21: 47 species on 5%+ of 11 checklistsOct 22-31: 45 species on 5%+ of 16 checklistsNov 1-7: low data (5 checklists)Nov 8-14: low data (5 checklists)Nov 15-21: low data (7 checklists)Nov 22-30: 43 species on 5%+ of 10 checklistsDec 1-7: low data (3 checklists)Dec 8-14: low data (7 checklists)Dec 15-21: 45 species on 5%+ of 17 checklistsDec 22-31: 42 species on 5%+ of 15 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. 1Red-bellied Woodpecker80%
  2. 2Northern Cardinal77%
  3. 3Mallard76%
  4. 4Carolina Wren73%
  5. 5American Robin71%
  6. 6Blue Jay71%
  7. 7Downy Woodpecker67%
  8. 8Tufted Titmouse65%
  9. 9White-breasted Nuthatch60%
  10. 10Song Sparrow57%
  11. 11Canada Goose56%
  12. 12American Crow56%
  13. 13Carolina Chickadee54%
  14. 14American Goldfinch53%
  15. 15White-throated Sparrow52%

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 40 species

  1. Red-bellied Woodpecker81%
  2. Mallard79%
  3. Downy Woodpecker75%
  4. Carolina Wren70%
  5. White-breasted Nuthatch70%

Spring 64 species

  1. Northern Cardinal84%
  2. Mallard82%
  3. Red-bellied Woodpecker81%
  4. American Robin79%
  5. Carolina Wren75%

Summer 47 species

  1. American Robin80%
  2. Northern Cardinal80%
  3. Carolina Wren79%
  4. Gray Catbird77%
  5. Blue Jay72%

Fall 54 species

  1. Blue Jay80%
  2. Red-bellied Woodpecker79%
  3. White-breasted Nuthatch68%
  4. Downy Woodpecker66%
  5. Carolina Wren65%

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.