WhenToBird

Birding spot · Montgomery County, Pennsylvania

Birding at Valley Forge National Historical Park (Mill Grove): What You'll See Each Week

In November, the birds most often reported at Valley Forge National Historical Park (Mill Grove) are Song Sparrow (84%), Red-bellied Woodpecker (81%), and White-throated Sparrow (79%). It is busiest in spring, when 80 species turn up on at least 1 in 20 checklists, and species counts peak in early May (86 species). 156 species have been reported here across 1,109 complete checklists from 262 birders.

Species by week

020406080100Jan 1-7: 45 species on 5%+ of 13 checklistsJan 8-14: 43 species on 5%+ of 22 checklistsJan 15-21: 47 species on 5%+ of 24 checklistsJan 22-31: 49 species on 5%+ of 30 checklistsFeb 1-7: 58 species on 5%+ of 17 checklistsFeb 8-14: 43 species on 5%+ of 22 checklistsFeb 15-21: 49 species on 5%+ of 36 checklistsFeb 22-28: 51 species on 5%+ of 21 checklistsMar 1-7: low data (9 checklists)Mar 8-14: 57 species on 5%+ of 17 checklistsMar 15-21: 63 species on 5%+ of 19 checklistsMar 22-31: 62 species on 5%+ of 18 checklistsApr 1-7: 68 species on 5%+ of 18 checklistsApr 8-14: 65 species on 5%+ of 15 checklistsApr 15-21: 64 species on 5%+ of 33 checklistsApr 22-30: 80 species on 5%+ of 59 checklistsMay 1-7: 86 species on 5%+ of 36 checklistsMay 8-14: 81 species on 5%+ of 27 checklistsMay 15-21: 80 species on 5%+ of 17 checklistsMay 22-31: 64 species on 5%+ of 96 checklistsJun 1-7: 65 species on 5%+ of 49 checklistsJun 8-14: 56 species on 5%+ of 62 checklistsJun 15-21: 56 species on 5%+ of 46 checklistsJun 22-30: 57 species on 5%+ of 28 checklistsJul 1-7: low data (9 checklists)Jul 8-14: 59 species on 5%+ of 17 checklistsJul 15-21: 57 species on 5%+ of 11 checklistsJul 22-31: 63 species on 5%+ of 12 checklistsAug 1-7: low data (7 checklists)Aug 8-14: low data (6 checklists)Aug 15-21: low data (8 checklists)Aug 22-31: 65 species on 5%+ of 31 checklistsSep 1-7: 77 species on 5%+ of 25 checklistsSep 8-14: 63 species on 5%+ of 11 checklistsSep 15-21: 69 species on 5%+ of 15 checklistsSep 22-30: 52 species on 5%+ of 22 checklistsOct 1-7: 67 species on 5%+ of 13 checklistsOct 8-14: 74 species on 5%+ of 20 checklistsOct 15-21: low data (9 checklists)Oct 22-31: 59 species on 5%+ of 18 checklistsNov 1-7: low data (9 checklists)Nov 8-14: 60 species on 5%+ of 29 checklistsNov 15-21: 54 species on 5%+ of 10 checklistsNov 22-30: 64 species on 5%+ of 19 checklistsDec 1-7: 52 species on 5%+ of 14 checklistsDec 8-14: 51 species on 5%+ of 10 checklistsDec 15-21: low data (7 checklists)Dec 22-31: 52 species on 5%+ of 43 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. 1Song Sparrow84%
  2. 2Red-bellied Woodpecker81%
  3. 3White-throated Sparrow79%
  4. 4Downy Woodpecker75%
  5. 5Northern Cardinal75%
  6. 6Carolina Wren73%
  7. 7Northern Flicker73%
  8. 8American Robin70%
  9. 9Blue Jay64%
  10. 10White-breasted Nuthatch61%
  11. 11Canada Goose58%
  12. 12Turkey Vulture58%
  13. 13Carolina Chickadee57%
  14. 14Hairy Woodpecker57%
  15. 15American Crow55%

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 53 species

  1. Canada Goose73%
  2. Red-bellied Woodpecker68%
  3. White-throated Sparrow67%
  4. Song Sparrow65%
  5. Downy Woodpecker59%

Spring 80 species

  1. American Robin80%
  2. Red-bellied Woodpecker75%
  3. Northern Cardinal74%
  4. Blue Jay74%
  5. Song Sparrow72%

Summer 63 species

  1. Gray Catbird86%
  2. Blue Jay78%
  3. Northern Cardinal67%
  4. Red-bellied Woodpecker66%
  5. American Robin62%

Fall 72 species

  1. Red-bellied Woodpecker84%
  2. Northern Cardinal82%
  3. Blue Jay78%
  4. American Robin75%
  5. Carolina Wren72%

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.