WhenToBird

Birding spot · Allegheny County, Pennsylvania

Birding at Monongahela River: What You'll See Each Week

In November, the birds most often reported at Monongahela River are Mallard (57%), Rock Pigeon (50%), and Double-crested Cormorant (48%). It is busiest in spring, when 36 species turn up on at least 1 in 20 checklists, and species counts peak in early May (42 species). 97 species have been reported here across 1,050 complete checklists from 345 birders.

Species by week

01020304050Jan 1-7: 28 species on 5%+ of 37 checklistsJan 8-14: 23 species on 5%+ of 71 checklistsJan 15-21: 21 species on 5%+ of 69 checklistsJan 22-31: 23 species on 5%+ of 108 checklistsFeb 1-7: 30 species on 5%+ of 56 checklistsFeb 8-14: 29 species on 5%+ of 73 checklistsFeb 15-21: 32 species on 5%+ of 50 checklistsFeb 22-28: 33 species on 5%+ of 51 checklistsMar 1-7: 26 species on 5%+ of 26 checklistsMar 8-14: 26 species on 5%+ of 10 checklistsMar 15-21: low data (7 checklists)Mar 22-31: 36 species on 5%+ of 20 checklistsApr 1-7: 23 species on 5%+ of 11 checklistsApr 8-14: 29 species on 5%+ of 15 checklistsApr 15-21: 32 species on 5%+ of 10 checklistsApr 22-30: 28 species on 5%+ of 30 checklistsMay 1-7: 42 species on 5%+ of 14 checklistsMay 8-14: 38 species on 5%+ of 14 checklistsMay 15-21: 37 species on 5%+ of 16 checklistsMay 22-31: 30 species on 5%+ of 24 checklistsJun 1-7: 40 species on 5%+ of 19 checklistsJun 8-14: low data (8 checklists)Jun 15-21: 35 species on 5%+ of 16 checklistsJun 22-30: 34 species on 5%+ of 18 checklistsJul 1-7: low data (9 checklists)Jul 8-14: low data (7 checklists)Jul 15-21: low data (3 checklists)Jul 22-31: 29 species on 5%+ of 14 checklistsAug 1-7: low data (7 checklists)Aug 8-14: low data (6 checklists)Aug 15-21: low data (9 checklists)Aug 22-31: low data (5 checklists)Sep 1-7: 28 species on 5%+ of 10 checklistsSep 8-14: low data (5 checklists)Sep 15-21: low data (3 checklists)Sep 22-30: low data (5 checklists)Oct 1-7: 28 species on 5%+ of 13 checklistsOct 8-14: 25 species on 5%+ of 17 checklistsOct 15-21: low data (6 checklists)Oct 22-31: 30 species on 5%+ of 24 checklistsNov 1-7: 29 species on 5%+ of 20 checklistsNov 8-14: 28 species on 5%+ of 15 checklistsNov 15-21: low data (8 checklists)Nov 22-30: 31 species on 5%+ of 13 checklistsDec 1-7: 22 species on 5%+ of 12 checklistsDec 8-14: 19 species on 5%+ of 13 checklistsDec 15-21: 27 species on 5%+ of 15 checklistsDec 22-31: 33 species on 5%+ of 38 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. 1Mallard57%
  2. 2Rock Pigeon50%
  3. 3Double-crested Cormorant48%
  4. 4Canada Goose45%
  5. 5Song Sparrow41%
  6. 6House Sparrow39%
  7. 7American Robin38%
  8. 8Ring-billed Gull29%
  9. 9Surf Scoter25%
  10. 10European Starling23%
  11. 11Blue Jay21%
  12. 12Pied-billed Grebe18%
  13. 13American Goldfinch14%
  14. 14American Herring Gull14%
  15. 15Carolina Chickadee11%

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 30 species

  1. Ring-billed Gull86%
  2. Canada Goose73%
  3. Mallard66%
  4. American Herring Gull57%
  5. American Robin55%

Spring 36 species

  1. American Robin90%
  2. Canada Goose72%
  3. Mallard65%
  4. Rock Pigeon61%
  5. House Sparrow56%

Summer 29 species

  1. American Robin76%
  2. House Sparrow71%
  3. Mallard60%
  4. Rock Pigeon60%
  5. Canada Goose55%

Fall 30 species

  1. Mallard65%
  2. Rock Pigeon55%
  3. House Sparrow55%
  4. Song Sparrow37%
  5. Canada Goose37%

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.