WhenToBird

Birding spot · Montgomery County, Pennsylvania

Birding at Green Lane Reservoir: What You'll See Each Week

In November, the birds most often reported at Green Lane Reservoir are Canada Goose (89%), American Black Duck (79%), and Gadwall (72%). It is busiest in spring, when 79 species turn up on at least 1 in 20 checklists, and species counts peak in early May (75 species). 218 species have been reported here across 6,265 complete checklists from 610 birders.

Species by week

020406080Jan 1-7: 44 species on 5%+ of 211 checklistsJan 8-14: 49 species on 5%+ of 107 checklistsJan 15-21: 48 species on 5%+ of 88 checklistsJan 22-31: 47 species on 5%+ of 130 checklistsFeb 1-7: 50 species on 5%+ of 73 checklistsFeb 8-14: 48 species on 5%+ of 108 checklistsFeb 15-21: 53 species on 5%+ of 131 checklistsFeb 22-28: 50 species on 5%+ of 150 checklistsMar 1-7: 51 species on 5%+ of 160 checklistsMar 8-14: 55 species on 5%+ of 139 checklistsMar 15-21: 52 species on 5%+ of 132 checklistsMar 22-31: 55 species on 5%+ of 155 checklistsApr 1-7: 59 species on 5%+ of 125 checklistsApr 8-14: 59 species on 5%+ of 117 checklistsApr 15-21: 63 species on 5%+ of 140 checklistsApr 22-30: 73 species on 5%+ of 192 checklistsMay 1-7: 75 species on 5%+ of 126 checklistsMay 8-14: 69 species on 5%+ of 125 checklistsMay 15-21: 71 species on 5%+ of 128 checklistsMay 22-31: 69 species on 5%+ of 263 checklistsJun 1-7: 66 species on 5%+ of 113 checklistsJun 8-14: 61 species on 5%+ of 59 checklistsJun 15-21: 55 species on 5%+ of 52 checklistsJun 22-30: 57 species on 5%+ of 59 checklistsJul 1-7: 65 species on 5%+ of 75 checklistsJul 8-14: 66 species on 5%+ of 123 checklistsJul 15-21: 68 species on 5%+ of 132 checklistsJul 22-31: 69 species on 5%+ of 239 checklistsAug 1-7: 69 species on 5%+ of 146 checklistsAug 8-14: 66 species on 5%+ of 171 checklistsAug 15-21: 69 species on 5%+ of 153 checklistsAug 22-31: 64 species on 5%+ of 271 checklistsSep 1-7: 68 species on 5%+ of 230 checklistsSep 8-14: 64 species on 5%+ of 155 checklistsSep 15-21: 63 species on 5%+ of 98 checklistsSep 22-30: 74 species on 5%+ of 138 checklistsOct 1-7: 64 species on 5%+ of 99 checklistsOct 8-14: 67 species on 5%+ of 110 checklistsOct 15-21: 65 species on 5%+ of 86 checklistsOct 22-31: 61 species on 5%+ of 156 checklistsNov 1-7: 66 species on 5%+ of 120 checklistsNov 8-14: 60 species on 5%+ of 124 checklistsNov 15-21: 55 species on 5%+ of 77 checklistsNov 22-30: 52 species on 5%+ of 118 checklistsDec 1-7: 54 species on 5%+ of 90 checklistsDec 8-14: 59 species on 5%+ of 79 checklistsDec 15-21: 53 species on 5%+ of 60 checklistsDec 22-31: 52 species on 5%+ of 132 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 Goose89%
  2. 2American Black Duck79%
  3. 3Gadwall72%
  4. 4Northern Shoveler68%
  5. 5Song Sparrow67%
  6. 6Mallard60%
  7. 7Green-winged Teal52%
  8. 8Ring-billed Gull51%
  9. 9American Crow48%
  10. 10Blue Jay46%
  11. 11White-throated Sparrow43%
  12. 12Northern Cardinal38%
  13. 13Lesser Black-backed Gull38%
  14. 14American Robin34%
  15. 15Belted Kingfisher34%

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 51 species

  1. Canada Goose91%
  2. Ring-billed Gull87%
  3. American Black Duck77%
  4. Lesser Black-backed Gull70%
  5. American Herring Gull56%

Spring 79 species

  1. Red-winged Blackbird83%
  2. Canada Goose79%
  3. Song Sparrow75%
  4. Tree Swallow63%
  5. Common Merganser58%

Summer 71 species

  1. Canada Goose87%
  2. Great Blue Heron86%
  3. Gray Catbird80%
  4. Song Sparrow69%
  5. Wood Duck66%

Fall 71 species

  1. Canada Goose87%
  2. Northern Shoveler62%
  3. Great Blue Heron61%
  4. Mallard61%
  5. Blue Jay61%

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.